bio26852のブログ https://ameblo.jp/bio26852/ ブログの説明を入力します。 ja rna extraction machine price Ga Precision Gladius DTU and Graphene Flagship researchers have taken the art of patterning nanomaterials to the next stage. Precise patterning of 2D supplies is a route to computation and storage utilizing 2D supplies, which may ship better efficiency and far decrease energy consumption than today's expertise. Processing, packaging and repair solutions, maintaining the very best requirements of meals security, operational performance and sustainability. With unfailing market gauging expertise, Orbis Market Reports has been excelling in curating tailor-made business intelligence knowledge throughout industry verticals. Constantly thriving to increase our talent improvement, our energy lies in devoted intellectuals with dynamic problem solving intent, ever keen to mold boundaries to scale heights in market interpretation.

 

· Andrew holds a Bachelor’s of Science in Microbiology/Biochemistry from Cal Poly San Luis Obispo.

· When utilizing a secure field for incineration, the temperature ought to be above 800°C to reduce air air pollution; if there isn't a secure box, an incinerator with a lower temperature (300°C to 400°C) may additionally be used.

· Using prefilled cartridges and preprogrammed strategies, the Maxwell® RSC provides consistent, reliable DNA or RNA extraction in 25–60 minutes, relying upon sample type.

· Mr. Frederici is 34 years tenured with Eurofins TestAmerica and its legacy corporations and is responsible for establishing, implementing, monitoring and enforcing company-wide ethics, quality assurance, and well being & security applications.

· This precipitation permits the separation of DNA from sample parts, proteins, lipids, and buffers that may intrude with the Total DNA Assay.

 

Nübling C M, Seitz R, Löwer J. Application of nucleic acid amplification methods for blood donation screening. The QIAamp spin column procedure was performed according to the manufacturer's directions and was preceded by a 10-min protease sample pretreatment at 56°C. After lysis of the pattern, HBV DNA isolation was carried out with the NucliSens Extractor in accordance with the producer's instructions. After being dried, the nucleic acids were launched from the silica particles in an elution buffer. Two extra pretreatment procedures have been investigated together with the extractor. Samples (100 μl) had been handled with proteinase K in the presence of zero.5% sodium dodecyl sulfate at 60°C for 1 h prior to lysis in 900 μl of GuSCN buffer; samples (100 μl and 1 ml) have been lysed in 900 μl and 9 ml of GuSCN buffer, respectively, and heated to 80°C for 10 min. Watch these researchers clarify how they rely on the Maxwell® Instruments to save tons of time on DNA and RNA extraction to allow them to focus on what matters to them.

Ce Fda Computerized Nucleic Acid Extraction And Isolation Reagent Dna Purification Resolution Rna Separation Reagent Package

All standard protocols in the expanding vary can additionally be downloaded free of cost. Twenty samples from patients with diagnosed HBV infections have been tested by PCR after extraction from 1 ml of serum in the extractor according to the 10 min at 80°C protocol and after QIAamp extraction from 200 μl of serum. In this research we investigated the suitability of the NucliSens Extractor to isolate HBV DNA from human plasma and serum samples so as to enable sensitive detection of the viral genome by a noncommercial PCR methodology. The Quantus™ Fluorometer is a dual-channel fluorometer that provides highly delicate fluorescent detection in a compact, simple-to-use instrument. When used with the preprogrammed settings for Promega QuantiFluor® Dye Systems (QuantiFluor® dsDNA, RNA and ssDNA Systems), the Quantus™ Fluorometer can rapidly quantitate nucleic acids. The sensitivity and broad dynamic range of the Quantus™ Fluorometer and QuantiFluor® Dyes let you complement your absorbance-based strategies and quantify your goal molecule over a wider range of concentrations.

Dna Extraction From Excessive Focus Protein

The merchandise from which the genetic material is to be extracted is positioned on the highest left slot of the DNA extractor. The extraction course of will now start, all the time yielding a storage disc with prime quality DNA (above 50%) for a certain species. Extraction from Mosquitoes in Amber will give DNA for terrestrial creatures, extraction from Aphids in Amber will give DNA for crops, and extraction from Sea Lampreys will give DNA for Sea Creatures. According to the varied wiki's I looked at, I should have the power to put in saplings into the dna extractor however it would not work. One of the premises early within the forestry chapter is that I would NOT have to mess around with bee's and I would actually somewhat not.

 

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]]> https://ameblo.jp/bio26852/entry-12699689320.html Thu, 23 Sep 2021 16:44:23 +0900 Lateral Flow Strip Cutter wholesaler Lateral Flow Strip Cutter

Cat.No.: LFST0007

Dimension: 
530mm*450mm*300mm
Weight: 50kg
Speed: 450pcs/min
Precision: ±0.05mm

Types of lateral flow strip cutter

Usually there are three types of lateral flow strip cutter
1. Programmable Shear Strip Cutter
2. Low speed strip cutter
3. High speed strip cutter

What is features of AntiTeck LFST0007 lateral flow strip cutter?

1. Programmable shear
2. High speed
3. Max 450 strips per minute cutting
4. Easy to adjust cutting width and speed
5. Touch screen

Brands of lateral flow strip cutter

1. Biodot
2. Kinematic Automation
3. AntiTeck Life Sciences

Overview AntiTeck LFST0007 lateral flow strip cutter

How to install lateral flow strip cutter

 How to use lateral flow strip cutter?

 

 

Contact us

Email: info@antiteck.com

Website:  https://lateralflow.antiteck.com/lateral-flow-strip-cutter-for-lateral-flow-test-strip-manufacturing/

 

]]> https://ameblo.jp/bio26852/entry-12694565715.html Fri, 27 Aug 2021 18:34:45 +0900 10 Important Lab Safety Equipment Alternatives I Every lab must have its safety equipments. Here is the list of the some lab safety equipment alternatives.

 

Every modern lab must have these safety equipments but some informal or school laboratories have not these equipments and if not then, they must have their alternatives. Every person in the laboratory should know their exact locations. Here is the detailed explanation about the lab safety equipment alternatives.

1 Spill containment kit

A spill containment kit is a basic need for lab safety. While working when a highly acidic substance or corrosive liquid is a spill in the workspace area acid, then we can use a spill containment kit to clean the area. This kit contains some absorbing material that surrounds the whole spill and neutralizes it .An example of it is mercury in-line vacuum trap kit, a container of sodium bicarbonate.

Substitute:
The best substitute for this is paper towel .we can use this paper towel to clean the spill. We can also use kitty litter or oil absorbent material as an alternative if spill containment kit is not available.

2 Eye wash station

All laboratories must have their safety equipment to wash hazardous chemicals from the eyes. A formal eyewash station is like a water fountain with two faucets that directed up like this that they match the space between the eyes. In case of an emergency the Person’s head is placed between these faucets while the eyelids of that person are held open so the water can flush into the eyelids and wash away all the chemicals.

Substitute:
As a substitute of this a local shower or sink can be used. A hand-held shower wand could be a alternative for an eyewash station. When the eyes thoroughly washed, a person should consult to physician.

3 Fire extinguisher

There are many types of fire extinguishers, at least one of which should be present in all types of laboratories. Students should know how to use the particular type of fire extinguisher in their Laboratories.

Substitute:
If a fire extinguisher is not present than there is be a bucket full of sand and large supply of water should be present. Another substitute for this is baking soda (sodium bicarbonate).

4 Laboratory shower

This shower is used in modern laboratories to put out fires or those people who have caught on fire. It can also be use for those who suffers large chemical spill.

Substitute:
A best substitute for this shower is bathroom shower. You can use that if modern laboratory shower is not available.

5 Fume hood

Fume hoods are those hood that is used reduce the exposure of hazardous fume to the operator and laboratory area. In this hood Air is filtered by HEPA filters and the air is re circulates back into the laboratory, then a fume exhaust system combined with a chemical fume hood to move out harmful air outside of the laboratory.

Substitute:
In school or some common laboratories fume hood safety equipment is not present. Then there is a simple alternative for that. An exhaust fan should be present in those laboratories where fume hood is not present. Exhaust fan expels unpleasant fumes from the laboratory. If the exhaust fan is not present then these kind of experiment which produce harmful vapors should be experimented near the ventilation area or window.

6 Safety goggles

It is important to wear safety goggles when working with harmful chemicals and other substances because they protect our eyes from inflammation and infection. while experimenting certain spill or splash may occur which can easily damage our eyes. These goggles should be worn at those kinds of experiments. This safety goggles reduce the risk of eyes inflammation.

Substitute:
While working on highly hazardous chemicals safety goggles is must. But while working in informal or school laboratories, there is a substitute for that when you perform some spill experiment wear normal glasses. This will reduce the risk of eyes inflammation.

 

Read more

 

Contact us

Email: info@antiteck.com

Website:  https://antiteck.com/10-important-lab-safety-equipment-alternatives-in-every-laboratory/

 

]]> https://ameblo.jp/bio26852/entry-12694560809.html Fri, 27 Aug 2021 18:02:21 +0900 Lab Equipment for sale 1- BIO – XPS/X-ray Photoelectron Spectrometer

This is an analysis tool that is used to study the electrical effect. X-ray Photoelectron Spectroscopy is carried out with the help of this tool. With the help of this tool, the composition and the chemical bonding can be studies of any material or surface. It helps to identify the elements found in metals organic materials, and powders.

2-Glassware

Glassware is mostly used for microscale work. The glassware is the drying tube, the Hickman head, water condenser, air condenser, air condenser, spin vane, and claisen adapter for organic chemistry. The purpose of using glassware is distillation, reflux, and other organic chemistry laboratory procedure. Because of the ground glass joints incorporated into each piece of glassware, they are used for carrying out Taper glassware is more costly than common glassware like beakers and Erlenmeyer flasks.

3- Clamps

The equipment used in the organic lab chemistry is segmented for the reason that the apparatus can be fastened with other equipment in different ways and also the vapors don’t get escaped from the apparatus. There is a variety of clamps that has a different purpose. The two major types of clamps are extension clamps and three-fingered clamps. These clamps are used to hold apparatus and join them with one another.

4- X-ray Diffraction

In order to determine the identity of crystalline solids or minerals on the basis of their atomic structure, X-ray Diffraction is used. The reason for diffraction occurrence is the difference of wavelengths of X-rays which are of few angstroms which are roughly the same as interatomic distances in crystalline solids.

5- JSPM-400 Scanning Probe Microscope

In the organic chemistry lab equipment, the microscopes are of immense importance and JSPM-400 is a powerful microscope that is used or set up as an Atomic Force Microscope or Scanning tunneling microscope. Also, some standard AFM modules comprise contact, friction force microscopy, current image, and non-contact AFM. The main specifications of the microscope are that there is a vacuum and the specimen can be locked inside. Moreover, there is a 25 mm scanner inside it.

 

6- The Bruker FT-IR Spectrometers

Two Fournier-Transform Infrared spectrometers are equipped In the Organic Chemistry Lab Equipment. Both of the spectrometers are Bruke Tensor 27. They are used for chemical analysis. The microscope is equipped with a 15X IR objective as well as a 15X GIR objective. The software and/or a joystick control the stage's XY position.

7- The Thermo Scientific Exactive High-Resolution MS

To carry out the process of mass analysis, the EXACTIVE MS Detector is used. The technology used in this detector is Orbitrap. Moreover, the main characteristics of this high-resolution detector are it has positive and negative ion polarity modes, the accuracy of mass can be obtained in sub-ppm and its high resolution of up to 100.000 FWMH.

8- Pipettes and Droppers

As the name suggests, pipettes are used for transferring the liquid to another glassware. They have the rubber at one end and they are mostly used to draw water from the small neck bottles. In organic chemistry, the pipettes are used to carry out and test the liquids while experimenting with different chemical reactions. Droppers are very much clear by their name. Droppers are used when the required amount of liquid has to be very limited and accurate. It is also necessary because if the amount of liquid changes in any way i.e. increases or decreases the process and experiment can go in vain and that could lead to further delay of the process,reaction, etc. Droppers lessen the measurement mistakes and make it easier to add the liquid bit by bit. These two are important for carrying out the organic chemistry lab processes.

Read more

 

 

Contact us

Email: info@antiteck.com

Website:  https://antiteck.com/20-important-organic-chemistry-lab-equipment-in-every-laboratory/

]]> https://ameblo.jp/bio26852/entry-12694557233.html Fri, 27 Aug 2021 17:40:14 +0900 non-nutritive additives Feed additives related to pig farms—non-nutritive additives

 

In the previous article we talked about nutritional additives, this article we talked about non-nutritive additives. Literally, this additive should be non-nutritive, shouldn't it be used? Non-nutritive additives refer to non-nutritive substances added to feed to improve feed utilization efficiency, maintain feed quality and quality, and benefit animal health or metabolism. Whether it is nutritive or non-nutritive, it is a substance for animal health and metabolism, ensuring the quality of feed, etc.

Antibiotic

The current requirements for feed produced by feed companies are non-resistant feed, and the use of antibiotics is controlled. Feed antibiotics refer to antibiotics that are used in healthy animal feed at sub-therapeutic doses to improve animal nutrition, promote animal growth, and improve feed efficiency. The mechanism of action of feed antibiotics is to interfere with cell wall synthesis; change cell membrane permeability; affect protein synthesis in bacterial cells; inhibit nucleic acid synthesis.

Enzyme

Most of the enzyme preparations used in feed belong to the class of digestive enzymes. The role of feed enzyme preparations is to supplement the deficiency of endogenous digestive enzymes (enhanced digestion); eliminate and degrade dietary anti-nutritional factors and digest nutrients that cannot be digested by endogenous enzymes. The mechanism of action is to destroy plant cell walls and improve nutrient digestibility; reduce the viscosity of the digestive tract and knees and reduce the occurrence of diseases; eliminate anti-nutritional factors; supplement the deficiency of endogenous enzymes and activate the secretion of endogenous enzymes.

 

Due to the complexity and diversity of feed ingredients, feed enzyme preparations are generally compound enzyme preparations. The non-starch polysaccharides in wheat and rye are mainly arabinoxylans, while in barley and oats are mainly mixed cross-linked β-glucans. To give full play to the role of enzymes, the corresponding enzyme preparation must be selected according to the substrate in the diet. Generally speaking, the simpler the digestive function of the animal, the more obvious the application effect of enzyme preparations. The application effect on poultry is better than pigs, and the application effect on ruminants is not obvious. The effect of juvenile ruminants is better than that of adult ruminants.

 

Nutrient redistribution agent

Most hormones have been banned.

 

Probiotics (microbial preparations) in a narrow sense refer to probiotics, that is, active microorganisms or their cultures that can be directly fed to animals and can prevent diseases, promote animal growth and improve feed utilization by adjusting the animal’s intestinal microecological balance. It is called probiotics or feed microbial additives. Broadly speaking, it is a collective term for probiotics and prebiotics. According to the classification of probiotic-producing bacteria, there are two main types of prebiotics: Lactobacillus and Bacillus.

 

The characteristics that the probiotic bacteria should have are non-pathogenic, non-toxic, non-toxic and side effects, and do not produce hybrids with pathogenic microorganisms; it reproduces quickly in vivo and in vitro, and has a strong competitive advantage; it can work in low pH inorganic acids, Survive in the environment of organic acids and bile, and colonize in the gastrointestinal tract; can produce lactic acid, hydrogen peroxide and other inhibitors of intestinal pathogenic bacteria; high survival rate after processing, good stability at room temperature after mixing into feed; can promote Animal growth and development.

 

According to the biological function of oligosaccharides, oligosaccharides can be divided into functional oligosaccharides and ordinary oligosaccharides. The chemical probiotics used as feed additives mainly refer to functional oligosaccharides, such as oligosaccharides and lactulose.

 

The mechanism of action of probiotics: inhibit the growth of pathogenic microorganisms; promote the proliferation of beneficial bacteria in the intestinal tract, modify the intestinal microecosystem; improve the immune function of animals.

 

Factors affecting the effects of probiotics include animal species; animal age and physiological status, environmental sanitation; probiotic species, dosage, and feed processing and storage conditions; use of other feed additives (such as antibiotics, mineral elements) in the diet, etc. .

 

The current problems and development directions are that there is little understanding of the mechanism of probiotics, fewer varieties, single strains, lack of quality standards for products, unstable application effects, and lack of quantitative research on the factors affecting application effects. Use biotechnology to develop genetically engineered bacteria with unique effects, such as lysine-producing lactic acid bacteria, high-fiber decomposing bacteria, and phytotoxin decomposing bacteria.

Other additives

The mechanism of action of acidifiers is to lower the pH of the diet and the gastrointestinal tract and increase the activity of digestive enzymes; improve the microflora of the gastrointestinal tract; directly participate in the metabolic effect in the body; promote the absorption of nutrients; and improve the palatability of the diet.

 

Insect repellent and health care agent: insect repellent, anti-coccidial agent.

 

Feed conditioner: coloring agent, flavoring agent, food attractant. Feed modifiers refer to additives that can improve the color and taste of the feed, and improve the sensory quality of feed or animal products. Mainly include colorants and attractants.

 

Feed attractants, also known as appetite enhancers, are special additives added to feeds in order to improve the palatability of feeds, enhance animal appetite, increase animal intake, and promote feed digestion, absorption and utilization. The main function of the feed attractant is to cover the peculiar smell in the feed, improve the palatability of the feed, enhance the appetite of the animal, promote the digestion, absorption and utilization of the feed, accelerate the growth of the animal, and reduce the feed-to-meat ratio; Feed intake under stress, increase feed intake of stressed or diseased animals, help relieve stress or cure diseases; stimulate secretion of digestive juice, improve nutrient digestion and absorption rate; make feed more commercial ; Conducive to the development of new feed resources and reduce feed costs. Food attractants include sweeteners, spicy flavoring agents and umami flavoring agents. The main function of sweeteners is to enhance the sweetness of the feed, mask the original unpleasant taste in the feed, and increase the feed intake of animals.

 

Feed modulator: binder, stabilizer, emulsifier, silage modulator. Feed modifiers refer to substances added to improve feed properties (shape, mixing uniformity, softening state, etc.) during feed processing.

 

Chinese herbal medicine feed additives. Chinese herbal medicine generally refers to the roots, stems, barks, leaves and seeds of herbaceous plants, as well as the flowers and fruits of some trees, trees and shrubs. It is characterized by naturalness, versatility, no toxic side effects, and no drug resistance.

 

Typical Chinese herbal medicine extracts

Astragalus polysaccharide has the function of activating cellular immunity and inducing the formation of interferon;

 

Beef leech oil has high antibacterial activity against Salmonella murine and Staphylococcus aureus;

 

Allicin effectively inhibits the reproduction of dysentery bacillus and typhoid bacillus, and has obvious inhibition or killing effect on staphylococcus, streptococcus, pneumococcus and mold;

 

Flavonoids are a good antioxidant;

 

Glycoterpenoids have the functions of enhancing the immune function, improving disease power; improving the quality of animal products; anti-stress and antioxidant effects;

 

Changshanone has a good effect on preventing and controlling poultry coccidia

 

Feed preservation (storage) agent

Antioxidants and preservatives, mainly antioxidants and antifungal agents

 

Feed antioxidants refer to all substances that can prevent or delay feed oxidation, improve feed stability and extend storage period.

 

As an effective antioxidant, the standard is to react with free radicals faster than other substances (oil, vitamins, etc.); ②It should form a stable product under normal storage conditions.

 

Carrier and diluent for premix

 

The carrier refers to the feedable substance that can carry the active ingredients of Micro Li, improve its dispersion, and has good chemical stability and adsorption.

 

Diluent refers to the material that is mixed into one or more micro-additives to dilute. It can dilute the concentration of active ingredients, but the physical properties of micro-components will not change significantly. The diluent does not play the role of supporting additives. In terms of particle size, it is finer than the carrier, the surface of the particles is smoother, and the dispersion is better.

 

Water content generally requires that the water content of the carrier and diluent is controlled at 8%-10%, and the maximum is not more than 12%. The water content of the drug and vitamin carrier should not exceed 5%. Carriers and diluents can generally be divided into two types: organic and inorganic. Organic carriers usually refer to plants and food by-products that contain more crude fiber.

 

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https://ballyabio.com/ballya-halofuginone-test/

 

]]> https://ameblo.jp/bio26852/entry-12668538871.html Wed, 14 Apr 2021 18:20:51 +0900 how do you use the coccidiosis medicine? Coccidiosis is repeated in summer, how do you use the correct medicine and commonly used coccidiosis medicine?

 

High temperature and humidity in summer, frequent occurrence of bacterial diseases in rainy season, bacterial diseases are easy to breed, especially coccidiosis is easy to recur, causing headaches for farmers and friends. Today I will tell everyone what coccidiosis is and how to make coccidiosis effective Prevention and control, I hope to help everyone.

Clinical symptoms

Diseased chickens are depressed, with fluffy feathers, head curled, loss of appetite, crops are filled with fluid, cockscombs and visible mucosa are anemic, pale, and gradually lose weight, diseased chickens often excrete red carrot-like feces, if infected with soft Eimeria Insects, the feces are brown at the beginning, and later become complete blood feces. If measures are not taken in time, the fatality rate can reach more than 50%. If multiple types of coccidia are infected with each other, there will be blood in the stool and a large amount of shed intestinal mucosa.

 

Coccidiosis is repeated in summer, how do you use the correct medicine and commonly used coccidiosis medicine?

 

Common drugs for the treatment of broiler coccidiosis

 

1 Chloropyridine

The drug has the best effect in the developmental stage of coccidia spores and can effectively inhibit the development of epithelial tissues of pathogens. In broiler chickens for up to 2 months of disease, the drug can effectively inhibit the reproduction, development and breeding of coccidia after use process. Of course, the use of chlorpyridine should be carried out in strict accordance with the corresponding requirements. There is a certain possibility of recurrence after stopping the drug. The drug will also affect the immunity of broilers, so choose to use it carefully.

 

2 Amproline hydrochloride

The drug mostly forms a pharmacological effect in the schizophrenia body, has a significant killing effect, can effectively inhibit the protrusion of coccidia spores, and can periodically inhibit the coccidia.

 

Coccidiosis is repeated in summer, how do you use the correct medicine and commonly used coccidiosis medicine?

 

3 Sulfaquinoxaline Sodium

This medicine mostly targets Eimeria, which can quickly and completely kill the coccidia, but the killing effect is not ideal compared to the first generation, so it needs to be mixed.

 

4 Diclazuril

This medicine mostly treats Eimeria vulgaris, has a significant effect on inhibiting the second-generation stumps, and has an ideal inhibitory and killing effect. However, the medication must be accurately administered according to the corresponding content and composition. The drug is insoluble in water and ethanol, and it is mostly mixed with feed and then fed.

 

5 changshanone

This medicine is a plant extract medicine that can resist coccidia with a broad spectrum, has a strong inhibitory effect, has good applicability, and can promote the recovery of broiler intestines, thereby optimizing their growth quality and gaining weight. This medicine is mostly used Early prevention and treatment.

 

Coccidiosis is repeated in summer, how do you use the correct medication and commonly used coccidiosis drugs?

 

6 Sulfachlorpromazine Sodium

The drug can significantly inhibit and kill the second-generation remnants. Eimeria tenuiflora is its main target, and the drug is highly selective, so it needs to be used with caution.

 

7 Tocujuli

The drug has a wide range of parts of action on the coccidia, can fully inhibit the coccidia, and can also effectively interfere with the division of the coccidial bacterial nucleus, inhibit its respiration and metabolism, and promote the expansion of the endoplasmic reticulum membrane, homocytosis, and a relatively effective killing. prominent. Because the drug is not highly targeted, it should be used with caution, and only after observation and analysis of diseases and symptoms can be used for symptomatic medication.

 

Coccidiosis is repeated in summer, how do you use the correct medication and commonly used coccidiosis drugs?

 

In the early stage of broiler coccidia, linsodium, xanthone, toltrazuril, etc. can effectively prevent the disease, and after the onset, especially in the stage of coccidia egg reproduction, then it is necessary to use highly targeted drugs for timely and clear treatment , And pay attention to avoid recurrence of broiler coccidiosis after treatment. During treatment, the medication can be used continuously for 4 days, and the medication can be discontinued for 2 days. After that, the medication is continued to treat the disease periodically, which can effectively inhibit the reproduction of coccidia eggs, thereby ensuring the recovery of the flock and avoiding mass infections and reducing The possibility of its recurrence serves the purpose of radical cure.

 

Finally, I recommend a coccidial medicine-Baiqiulikang, the traditional Chinese medicine Changshan ketone, and Pulsatilla extract. It is highly effective and does not damage the liver and kidney, controls blood in the stool for 24 hours, and the cure rate is 95%.

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https://ballyabio.com/ballya-halofuginone-test/

 

]]> https://ameblo.jp/bio26852/entry-12668538524.html Wed, 14 Apr 2021 18:18:56 +0900 The chicks are not up to the standard? After more than ten days of hard brooding, the chicks are not up to the standard? Farmers say I am difficult!

 

The process of raising chickens is simple and complicated. The simple thing is that there is a thermometer for temperature control, a hygrometer for humidity control, and an illuminance meter to control the light intensity. There is nothing difficult. It’s complicated and complicated. You can’t just look at the thermometer without looking at the chickens. Chickens are the important objects in our breeding process. All measures are for chickens. During the breeding process, only auxiliary equipment is paid attention to, and the performance of chickens is ignored. It will lead to failure in the brooding stage, such as the brooding weight is not up to the standard, the rate of dead stocking is high, and the weak chicks increase.

 

Some friends sent me a message, saying that brooding in spring is really not easy. After more than ten days of hard work, the weak chicks are getting more and more day by day, the weight is also small, the neatness is not good, and it is very helpless.

 

Brooding chicks in spring is very difficult, but in order to learn from failures, prevent problems before they happen, avoid stepping on pits during brooding, and summarizing in time is the king:

 

First of all, we need to know how many chicks have reached the standard. After 10 days of brooding, a weight of about 200 grams is considered as reaching the standard. There are slight differences according to different breeds and feeding management levels. Next, Lao Liang summarized the following reasons for everyone:

 

1. The weight of the chicken fry is not up to the standard!

 

In an article, I mentioned that the quality of the chicks when they emerge from the shell depends on the laying age of the laying hens, the eggs produced by the early laying hens are relatively small, and the size of the hatched chicks is relatively small, but As the saying goes, there is no need to worry about the growth of seedlings, as long as the laying hens are of good physique, the small size of the chickens does not affect the later growth speed and regularity. The eggs produced by the late laying hens are large, and the hatched chicks are also relatively large. However, as the age of the hens increases, the functions of the body's various systems are in a decline stage, and the resistance will be somewhat Decline, the physique of the chicks will also have a certain impact.

 

When choosing chicken fry, it is recommended to choose chicken fry with quality assurance from large factories. The quality of chicks is directly related to the growth rate of chicks. Especially after long-distance transportation, weak chicks will become weaker due to dehydration and stress.

 

Strong and high-quality chicks are the key to breeding, and the brooding stage will also save a lot of worry.

 

2. Substandard weight caused by unreasonable light time

 

Generally, on the first day when the chickens come in, in order to make the chickens adapt to the environment more quickly, and the phenomenon of not crowding at night, we will use 24 hours light. Starting from the next day, turn off the lights for half an hour every night to allow the chickens to adapt to the dark to avoid the stress caused by sudden power outages during the breeding process. At the same time, it is also a way to control feed. Uninterrupted feeding will prevent the chicken from feeling hungry, which is not conducive to the emptying of food in the chicken's digestive tract. Turn off the lights briefly every day to allow the chickens to rest, and also to synchronize the hunger status of the chickens, which is conducive to improving appetite. Controlling feed is not controlling quantity. Controlling feed is different from limiting feed. Don't be confused!

 

Properly turning off the lights helps to cultivate the appetite of the chickens, not only does not affect the growth, but also promotes the emptying of the appetite, and the growth speed of the chickens can be guaranteed when they are resting.

 

3. The weight is not up to the standard caused by the poor palatability of the feed!

 

Due to the particularity of the chicken's oral cavity and digestive system, it is necessary to eat granular food. The appropriate size of granules helps the chicken to eat and also helps the digestion and absorption of the feed. It is recommended to choose high-quality chicken feed, which can promote the development of the immune system and digestive system of the chickens, improve the immunity of the later stage, and reduce the consumption of feed throughout the process.

 

Food is the most important thing for the people, and chickens are no exception. Only by providing nutritious feed can chicks grow quickly, right?

 

4. The weight is not up to the standard caused by the inappropriate quantity and height of the bucket and drinking bottle!

 

According to the number of chickens, a sufficient number of buckets is provided. It is recommended that there are about 60 chickens per bucket, otherwise the chickens will rush to feed, and the strong chicks will eat more, and the weak ones will be pushed aside. The weaker and the more severe, the stampede will occur, causing the mortality of chicks to increase.

 

Water is the source of life, and the same is true for chickens, especially at the chick stage. Adequate drinking water can not only supplement the dehydration caused by long-distance transportation in time, but also promote the absorption of egg yolk, so that the chicks can obtain maternal antibodies faster . Due to the particularity of the chicken's oral structure, the water bottle must be placed in a suitable position. The water in the mouth of the water bottle will flow back when the water bottle is too low. If the bottle is too high, it will be difficult for the chickens to drink, resulting in water shortage.

 

Therefore, serious chicks grow fast, the number of buckets and kettles are sufficient, and the height should be reasonable.

 

5. The weight is not up to standard caused by nutritional wasting disease!

 

In the chicken stage, the digestive system is not fully developed and enteritis occurs nine out of ten. In order to ensure the growth and development of the chicks, adding 0.1% allicin or oxytetracycline to the feed can effectively prevent the occurrence of enteritis.

 

Coccidiosis is a nutrient-wasting disease that survives by absorbing the body's own nutrients, and without effective treatment for a long time, chickens lose weight, growth retardation or stagnation, which seriously threatens the weight of chicks. It is recommended to add changshanone and other traditional Chinese medicines to the feed to prevent the occurrence of coccidiosis.

 

To sum up:

 

The weight of the brood is not up to the standard, just like the foundation of a building is not well laid. During the brooding process, weak chicks should be picked out and reared separately, otherwise it will affect the growth of large groups, weak chicks themselves will not survive, and the rate of dead hunting will increase.

 

High-quality chicks, scientific feeding management, and disease prevention are the keys to ensuring the success of brooding, and none of them are indispensable.

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]]> https://ameblo.jp/bio26852/entry-12668536321.html Wed, 14 Apr 2021 18:06:12 +0900 How much do you know about food preservatives How much do you know about food preservatives

Since ancient times, people have had the awareness of food preservation: the ancients dried meat into dried meat and made bacon; salted vegetables and stored them in cellars; dried fruits and made candied fruits and so on. In the modern food industry, thanks to technological improvement and technological progress, food preservation has a more efficient means: adding preservatives. The addition of an appropriate amount of preservatives can effectively inhibit various harmful microorganisms, prevent and delay food deterioration, and even improve food quality. However, consumers' awareness of preservatives still lags behind to a certain extent. The reasons for food corruption, what are food preservatives, and the safety of preservatives are briefly introduced.

Why does food spoil?

 

The reasons that can cause food spoilage include food oxidation reaction, microbial contamination, enzyme action, temperature, etc., of which two important reasons are microorganisms and oxidation reaction.

 

Microorganisms such as bacteria and fungi invade and destroy food and live on the nutrients from it. Some microorganisms can also cause diseases, such as Listeria and Botox, and some microorganisms can spoil food.

 

Oxidation reaction occurs in the presence of oxygen, which mainly causes the oxidation of fat, vitamins and pigments. Fat oxidation can also produce some harmful substances, leading to food spoilage and deterioration. Under certain circumstances, preservatives can prevent food spoilage caused by microorganisms and other reasons.

1) What are food preservatives?

 

Preservatives refer to food additives that can be added to food to prevent or delay food spoilage, and their essence is a class of compounds that inhibit the proliferation of microorganisms or kill microorganisms.

 

 

2) Is the preservative safe?

If the safe dosage is not exceeded, the preservative is harmless to the human body.

 

my country has very strict regulations on the use of preservatives, and preservatives must meet the following standards:

 

1. Reasonable use is harmless to the human body;

 

2. Will not affect the digestive tract flora;

 

3. It can be degraded into normal components of food in the digestive tract;

 

4. Will not affect the use of drug antibiotics;

 

5. No harmful ingredients will be produced during heat treatment of food.

 

3) Types and functions of common preservatives

 

Preservatives are divided into two categories: chemical preservatives and natural preservatives.

 

1. Chemical preservatives

 

Mainly include benzoic acid, sorbic acid, dehydroacetic acid, sulfite, nitrite, esters of p-hydroxybenzoic acid, etc.

 

2. Natural preservatives

 

It is a substance with antibacterial effect secreted by organisms or present in the body, which is artificially extracted or processed to become a food preservative. Different from synthetic preservatives, these preservatives are natural substances, some of which are food components themselves, such as lysozyme, nisin, natamycin, chitosan, protamine, etc.

 

Additional reading

 

https://ballyabio.com/ballya-natamycin-test/

 

]]> https://ameblo.jp/bio26852/entry-12664909330.html Sat, 27 Mar 2021 18:20:47 +0900 Food corruption and anti-corrosion application Food corruption and anti-corrosion application technology

1. Preservative methods for processed foods/fruits/vegetables

2 Principle of anti-corrosion

3. The scope of use of food preservatives

4. Precautions for the use of food preservatives

1. Preservative methods for processed foods/fruits/vegetables

1. Physical Law

Heating, cooling, refrigeration, radiation, ultraviolet light, drying, pickling.

 

2. Chemical Law

The use of chemical substances to inhibit or kill microorganisms.

 

2. Food preservatives

1 Overview

 

Food preservatives are food additives that can prevent spoilage caused by microorganisms and extend the shelf life of food.

2 Principle of anti-corrosion

①　Interfere with the enzyme system of microorganisms, destroy their normal metabolism, and inhibit enzyme activity.

 

②　 solidify and denature the protein of microorganisms and interfere with their survival and reproduction.

 

③　 Change the permeability of the cell plasma membrane, inhibit the elimination of enzymes and metabolites in the body, and cause its inactivation.

 

3. The scope of use of food preservatives

Benzoic acid and salt: carbonated drinks, low-salt pickles, preserves, wine, fruit wine, soft sweets, soy sauce, vinegar, jam, fruit juice drinks, barreled thick fruit and vegetable juice for food industry;

 

Potassium sorbate: In addition to the above, there are fish, meat, eggs, poultry products, fruit and vegetable preservation, collagen casings, jelly, lactic acid bacteria drinks, pastries, fillings, bread, moon cakes, etc.;

 

Sodium dehydroacetate: yuba, pickles, orange juice;

 

Propyl p-hydroxybenzoate: preservation of fruits and vegetables, fruit juice drinks, jams, cakes, egg yolks, carbonated drinks, vinegar, soy sauce;

 

Calcium propionate: raw wet noodle products (cut noodles, wonton wrappers), bread, vinegar, soy sauce, pastries, soy foods;

 

Sodium diacetate: in various pickles, flour and dough;

 

Sodium lactate: grilled meat, ham, sausage, chicken and duck products and sauced products, etc.;

 

Streptococcus lactis: canned food, vegetable protein beverage, dairy products, meat products, etc.;

 

Natamycin: cheese, meat products, wine, juice drinks, tea drinks, etc.;

 

Hydrogen peroxide: raw milk to keep fresh, dried tofu in bags.

4. Precautions for the use of food preservatives

 

Preservatives must be added in strict accordance with China's "Sanitary Standards for the Use of Food Additives" and cannot be used in excess of the standards.

In the production and processing of food, due to the different types, properties, scope of use, price and toxicity of preservatives, the following points should be paid attention to before reasonable use.

 

1) Before adding preservatives, ensure that the food is completely sterilized and there should be no large amounts of organisms, otherwise the addition of preservatives will not have the desired effect. Such as potassium sorbate, not only will not play a role in preservative, but will become a source of nutrients for microbial reproduction.

 

2) To understand the toxicity and scope of use of various preservatives, add them in accordance with the safe use amount and scope of use. For example, sodium benzoate, because of its strong toxicity, has been banned in some countries, and China has strictly determined that it can only be used in carbonated drinks, jams, pickles, canned foods and some wines.

 

 

3) The effective use environment of various preservatives should be understood. Acidic preservatives can only be used in acidic environments and have strong and effective antiseptic effects, but they have little effect when used in neutral or alkaline environments, such as sorbic acid. Potassium, sodium benzoate, etc.; and the paraben esters in the ester preservatives can also be used between pH 4-8, and the effect is not bad.

 

4) Know the types of microorganisms that various preservatives can inhibit. Some preservatives are effective on molds, and some are effective on yeast. Only by mastering the characteristics of preservatives, you can prescribe the right medicine. Generally, it has been formulated in a compound form. There are many products that carry out comprehensive anti-corrosion preservation, such as Jianying Anti-corrosion King and Anti-fungal Preservative.

 

5) According to the different food processing techniques, the price and solubility of preservatives, and whether it has an effect on the flavor of the food should be considered, and its advantages and disadvantages should be combined and used flexibly.

 

Additional reading

 

https://ballyabio.com/ballya-natamycin-test/

 

]]> https://ameblo.jp/bio26852/entry-12664905338.html Sat, 27 Mar 2021 17:58:09 +0900 Analysis on knowledge points of food storage Analysis on knowledge points of food storage technology

1. The definition and characteristics of food chemical preservation

2. Food preservatives

3. Other organic preservatives

4, food preservation agent

 

Chemical preservation of food

1. The definition and characteristics of food chemical preservation

 

1. Food additives and their use

 

Food additives refer to natural and chemical synthetic substances added to food to improve the quality, color, flavor, and preservative and processing requirements of food.

 

2. Chemical preservation

 

The chemical preservation of food is the use of additives for chemical preservation in the process of food production, storage and transportation to improve the storage resistance of food and achieve certain processing purposes.

 

Features: It is a temporary or auxiliary preservation method.

 

The difference between food additives and food ingredients:

 

Food additives: need to go through toxicology inspection, and have a certain ADI value, the dosage is relatively small.

 

Food ingredients: It is recognized as a safe substance and does not require toxicological evaluation. The amount is relatively large, generally above 3%

 

2. Food preservatives

 

Broadly speaking, all products that can inhibit the growth of microorganisms and delay food spoilage or biological metabolism are food preservatives, sometimes called antibacterial agents. Food additives that can kill, inhibit or prevent the growth of microorganisms are called preservatives.

 

Requirements for food preservatives:

 

(1) It should undergo sufficient toxicological identification to prove that it is harmless to humans within the limit of use;

 

(2) It should not have a destructive effect on the nutritional content of the food, nor should it affect the quality and flavor of the food;

 

(3) It can be analyzed and identified after being added to food.

 

Preservatives can be divided into bactericides and antibacterial agents, according to their sources and properties can be divided into organic preservatives and inorganic preservatives.

 

Substances that inhibit the reproduction of microorganisms are called bacteriostatic agents. Within the limit of use, their bacteriostatic effect is mainly by changing the growth curve of microorganisms.

 

 

The biggest difference between fungicides and antibacterial agents is that fungicides can kill microorganisms through a certain chemical action within the limit of their use, so that they cannot infect food and cause food deterioration. According to its sterilization characteristics, it can be divided into three categories: oxidizing fungicides, reducing fungicides and other fungicides.

 

 

1. Inorganic preservatives

 

Reduced preservatives are mainly sulfurous acid and its salts, sulfur dioxide, anhydrous sodium sulfite, and sodium sulfite

 

Including peroxides and chlorine preparations. Hydrogen peroxide, peracetic acid, ozone

 

Carbon dioxide and other inorganic preservatives, nitrate and nitrite

 

2. Organic preservatives

 

Paraben benzoic acid (benzoic acid) and its salts Sorbic acid and its salts

 

Benzoic acid and sodium benzoate are undissociated molecules that have antibacterial effects. Benzoic acid and its sodium salt have a good antiseptic effect under acidic conditions, but their inhibitory effect on acid producing bacteria is weak. Therefore, this type of preservative is best used when the food pH is 2.5-4.0 in order to give full play to the preservative The role of. Its antibacterial mechanism is basically the same as that of benzoic acid, which mainly inhibits the activity of the microbial cell respiratory system and the electron transfer enzyme system, and can destroy the structure of the microbial cell membrane, thereby playing a preservative effect. Damage the dehydrogenase system in microbial cells; oxidize the conjugated double bond in the molecule, causing decomposition and rearrangement.

3. Other organic preservatives

 

Sodium diacetate dehydroacetic acid and its sodium salt

 

Microbial metabolites

 

When microorganisms grow, they can produce some substances that affect the growth of other microorganisms-antibiotics;

 

Nisin can effectively inhibit the growth and reproduction of gram-positive bacteria, especially for spore-producing gram-positive bacteria, Bacillus subtilis and Bacillus stearothermophilus.

 

Natamycin can be used to prevent mildew. Spraying on food surfaces where molds are prone to multiply and exposed to the air has a good anti-mold effect.

 

Subtilisin can reduce the heat resistance of heat-resistant spores and inhibit the growth of anaerobic spores, but it is not included in my country's food additive standards.

 

Biological extract

 

Enzyme protein plant extract

 

Lysozyme is one of the preservatives that have been used. This type of protein is a basic protein, mainly including protamine (protamine) and histone (histon). Metabolites with antibacterial activity in plants can be roughly divided into four categories: plant antitoxins, phenols, organic acids and essential oils.

 

3, antioxidants

 

Some chemicals are often added in food preservation to delay or prevent oxidative deterioration caused by oxygen. Such chemicals include antioxidants and deoxidizers.

 

1. Food antioxidants: a class of substances used to prevent or delay food oxidative deterioration.

 

a. Types and characteristics of food antioxidants

 

Fat-soluble antioxidants. Soluble antioxidants are easily soluble in fats and oils. They are mainly used to prevent oxidative rancidity and oil burning of food fats. Commonly used types are butylated hydroxyanisole, dibutylhydroxytoluene, and tert-butyl hydroquinone. Gallic acid esters and tocopherol mixed concentrates, etc.

 

Water-soluble antioxidants Water-soluble antioxidants are mainly used to prevent oxidative discoloration of food, and the commonly used type is ascorbic acid antioxidants. In addition, there are many, such as erythorbic acid and its sodium salt, phytic acid, tea polyphenols and amino acids, peptides, incense and glycosides, sugar alcohol antioxidants and so on. Other antioxidants In addition to the above antioxidants, reducing sugars, naringin, soybean antioxidant peptides, plant flavonoids and isoflavones, monosaccharide-amino acid complexes, dihydromyricetin, some plant extracts, etc. have antioxidant effects .

 

b. Precautions for the use of food antioxidants

 

Food antioxidants should be used at the right time. Antioxidants should be added before the induction period of oxidative rancidity in order to give full play to the role of antioxidants. Combination of antioxidants and synergists Synergists are substances that are used in conjunction with antioxidants and can increase the effect of antioxidants. This phenomenon is called-synergy.

 

2. Food deoxidizer

 

Also known as free oxygen absorbent (FOA) or free oxygen scavenger (FOS), it is a class of substances that can absorb oxygen. When it is sealed with the food in the packaging container, it can absorb free oxygen in the container and the oxygen dissolved in the food through a chemical reaction, and generate stable compounds to prevent the food from oxidizing and deteriorating. At the same time, the hypoxic conditions formed can effectively prevent food mildew. Change and pests.

 

a. Types and use mechanism of food deoxidizers

 

There are many kinds of deoxidizers, which can be basically divided into two categories: organic and inorganic. Each category includes many types of deoxidizers. Among a variety of deoxidizers, there are currently three widely used in food storage: special iron powder, sodium dithionite and alkaline sugar preparations. The mechanism of deoxidation is that the special iron powder first reacts with water and then combines with oxygen to finally generate stable iron oxide. The deoxygenation mechanism of sodium dithionite is based on activated carbon as a catalyst. When it encounters water, it will react chemically and release heat. The temperature can reach 60-70℃, and it will produce sulfur dioxide and water.

 

4, food preservation agent

 

In order to prevent fresh food from dehydration, oxidation, discoloration, spoilage, etc., the substance that is sprayed, sprayed, soaked or coated on the surface of the fresh food can be called a preservative, and its mechanism of action and preservatives are different.

 

1. The role of preservative

 

(1) Reduce the water loss of food;

 

(2) Prevent food oxidation;

 

(3) Prevent food discoloration;

 

(4) Inhibit the growth of microorganisms on the surface of fresh food;

 

(5) Maintain the flavor of the food;

 

(6) Maintain and increase the hardness and crispness of food, especially fruits;

 

(7) Improve the acceptability of food appearance;

 

(8) Reduce mechanical damage during food storage and transportation.

 

2. Types and properties of preservatives

 

a. Protein Plant-derived proteins include: zein, wheat gluten, soy protein, peanut protein and cottonseed protein. Animal-derived proteins include keratin, collagen, gelatin, casein and whey protein, etc. Separately or compositely made into edible film for food preservation.

 

b. Lipid compounds include: paraffin oil, beeswax, mineral oil, castor oil, rape oil, peanut oil, acetyl monoglyceride and its latex, etc., which can be used alone or mixed with other ingredients to preserve the freshness of food coatings. Use must comply with relevant food hygiene regulations. Films made of such substances are fragile, so they are often mixed with polysaccharide substances.

 

c. Polysaccharides The hydrophilic membrane formed by polysaccharides has different viscosity and binding properties, and has good gas barrier properties but poor water barrier properties. The film made of pectin has high water vapor permeability due to its hydrophilicity. Food-grade fruit and vegetable preservation smear (fruit wax) is based on the special respiration mechanism of citrus. This product has the following characteristics:

 

(1) Food safety is high. According to standard procedures (clean the fruits before using this product to remove pesticide residues), the fruits and vegetables after using this product can be eaten directly.

 

(2) The fresh-keeping effect is good, which can not only extend the fruit storage period, but also keep the fruit flavor unchanged.

 

(3) After use, a natural and bright luster is formed on the surface of the fruit, which can significantly improve the appearance of the fruit and increase the commercial value of the fruit.

 

(4) High quality and good price, reaching and exceeding the level of imported products in terms of performance and food safety.

 

d. Chitin-like chitin (chitin), also called chitin,

 

e. Resin Natural resin comes from the cells of trees or shrubs. Synthetic resins are generally petroleum products. Turpentine can be used as a film preservative for citrus fruits. Coumarone-indene resin can also be used for citrus fruits.

 

Shellac (lac): It is composed of laconic acid and lacic acid, which co-exist with wax, can give the coated food a bright luster. Shellac is widely used in fruits, vegetables and candies. Shellac and other resins have better gas barrier properties, and general to water vapor.

 

In addition, some other ingredients or other measures are often added to the preservative to increase the function of the preservative. For example, glycerol and sorbitol plasticizers are commonly used; benzoate and sorbate are used as preservatives; monoglycerides and sucrose lipids are used as emulsifiers, and BHA, BHT, and PG are used as antioxidants.

 

Additional reading

 

https://ballyabio.com/ballya-natamycin-test/

 

]]> https://ameblo.jp/bio26852/entry-12664905058.html Sat, 27 Mar 2021 17:56:40 +0900