What are the important roles of xylanase in feed

Feed usually contains more non-starch polysaccharides, mainly including arabinoxylan, -glucan, galactoside, pectin.

cellulose, etc. Arabinoxylan and -glucan account for 30% of non-starch polysaccharides, because monogastric animals cannot break down non-starch polysaccharides, so non-starch polysaccharides become an anti-nutritional factor. Non-starch polysaccharides can bind a large amount of water, increase the volume and viscosity of chyme in the digestive tract of feeding animals, and form a gel, resulting in digestive enzymes.

The function can not be carried out normally, affecting the absorption of the stomach and intestines, resulting in the retention of chyme in the small intestine, thereby causing abnormal reproduction of microorganisms, resulting in the stunting of animal growth and the reduction of feed conversion rate. Studies have shown that the addition of xylanase to the feed can significantly reduce the molecular size of arabinoxylan, breaking it down into xylo-oligosaccharides with a smaller degree of polymerization.

This improves feed performance and eliminates or reduces the anti-nutritional effects caused by increased viscosity. Usually the enzyme is associated with amylase, protease.

and other enzymes into complex enzymes, which are especially suitable for adding to poultry diets based on wheat and barley.

Xylanase is a solution to xylans in feed. Xylan, mannan, and dextran are all non-starch polysaccharides. Xylan is mainly found in wheat as a cereal raw material; Mannans are mainly found in beans, which are raw materials for legumes; Dextran is mainly found in barley, but barley is rarely used as an animal raw material in Asia.

Because xylans have water absorption, the water absorption rate is 10 times that of its own volume, increasing the viscosity of chyme in poultry feed affects the absorption and digestion of feed.

Xylanase can be used in brewing and feed industries. Xylanase can break down the cell walls of raw materials in the brewing or feed industry.

and dextran, which reduces the viscosity of the material in brewing, promotes the release of active substances, and reduces the non-starch or polysaccharides in feed grains, promotes the absorption and utilization of nutrients, and thus makes soluble lipids more readily available.

Ingredients. It mainly includes exo-1,4-xylanase, endocedonic 1,4-xylanase and xylanase, which can break down the non-starch polysaccharides of feed into xylo-oligosaccharides with a smaller degree of polymerization.

In order to improve feed performance, eliminate or reduce the anti-nutritional effect of non-starch polysaccharides in the animal stomach due to high viscosity, and it can destroy the structure of plant cell wall and improve endogenous digestive enzymes.

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When xylanase is used in the feed industry, it must be gradually diluted to the extent that it mixes well with its material. The dilution should be accurately measured according to the characteristics of the feeder. Enzymes are proteins and inhalable dust that may induce or cause allergies or anaphylaxis in some people.

Long-term exposure may cause discomfort to the mucous membranes of the eyes, eyes, and nose.

Therefore, any spillage, even the smallest one, should be cleaned up immediately. Immediately wash off the enzyme powder or enzyme solution contaminated with ** or eyes with water and seek the guidance of a specialist. After each opening or barrel, if it is not used up, the mouth of the bag should be tightened or the lid of the barrel should be tightened to avoid moisture or pollution.

For people who are sensitive to enzyme dust, inhaling enzyme dust may cause an allergic reaction.

Therefore, it is recommended that when using solid enzyme preparations, operators should wear work clothes, dust masks and gloves, and do not let the powder splash into the eyes, mouth and nose.

There are non-starch polysaccharides and pentosan in flour, mainly arabinoxylan and arabinogalactan peptides, of which arabinoxylan accounts for 60 70 of pentosan. Generally, wheat contains about 2 arabinoxylan, of which the water solubility is 0 5 0 8, and the water-soluble pentosan has a strong water-holding capacity, and can generally absorb water up to l0 20 times. Adding water-soluble arabinoxylan to flour can increase the water-holding capacity of the dough.

Experiments have proved that adding xylanase to flour can solubilize insoluble arabinoxylan and improve the machinery of dough.

Strength and increase the volume of bread, improve the color of bread. In general, there are endogenous enzymes in flour that can dissolve 15-20 insoluble pentosans. However, the addition of foreign enzymes can increase the dissolved amount to 40 65. Food of our country.

The hygienic standard for the use of additives stipulates that enzyme preparations that can be used for flour and pasta include amylase and glucose oxidase.

Xylanase, transglutaminase.

etc.?Generally, the molecular end of xylanase is deucase and endonuclease.

In China, because of the development of high-activity bifidobacterium proliferation factor xylo-oligosaccharides.

Endoxylanase was successfully developed. It can hydrolyze arabinoxylan into water-soluble, with a hydrolysis rate of 65, producing oligosaccharides dominated by xylobiose and xylotriose.

Mixture. This xylo-oligosaccharide has a pure sweetness, high temperature resistance and no decomposition, and good pH stability. Tests have proved that taking 0 7g of xylo-oligosaccharides per person per day shows high proliferative activity of Bifidobacteria, which is clear about improving intestinal function and promoting health?

Effect. In Japan, the L is priced at 2,500 yen, and in 2000 it consumed 650 tons. China has now put small batches on the market.

l not less than 6o yuan. If the flour quality is improved xylanase, the production of xylo-oligosaccharides is used with endoxylanase, then in making pasta food.

At the same time, the quality can be improved, and the high-activity bifid factor xylo-oligosaccharides can be added to the pasta. If the arabinoxylan in Bozhi flour is 2, of which there is 1 5 insoluble arabinoxylan, which is hydrolyzed by endoxylanase 50, then there is 0 75 xylo-oligosaccharides. That is, for every 100g of pasta, there is 0 75g of stupid silver ruined xylo-oligosaccharides, which is exactly the effective dose of intake.

In this way, xylo-oligosaccharides with staple food as the carrier are prepared with functional food, so that functional food can enter the staple food, and there is no longer a need to buy xylo-oligosaccharide oral liquid or tablets, which is convenient and economical.

Emulsifier (although cream also has this effect, but in order to save costs, it is necessary to add emulsifying acacia quieter pants) There are also additives such as some pigment sweeteners to improve taste and color. There is also a high slag of lead, and some thickeners such as agar can be added.

<>1. Xylanase can be used in brewing, feed, stool, socks and rock industries. Xylanase can decompose the cell wall of raw materials and -glucan in brewing or feed industry, reduce the viscosity of materials in brewing, promote the release of active substances, and reduce non-starch polysaccharides in feed grains, promote the absorption and utilization of nutrients, and thus make it easier to obtain soluble lipid components. Xylanase refers to the degradation of xylanase to low levels.

2. A general term for a group of enzymes of glycans and xylose, mainly including exo-1,4-xylanase, endo--1,4-xylanase and -xylanase, which can decompose the non-starch polysaccharide (NSPS) of feed into xylo-oligosaccharides with a smaller degree of polymerization, thereby improving feed performance, eliminating or reducing the anti-nutritional effect of non-starch polysaccharides in the animal stomach due to high viscosity, and at the same time, it can destroy the structure of plant cell wall, improve the activity of endogenous digestive enzymes, and improve the utilization of feed nutrients In addition, Xylanase is also widely used in industries such as food and textiles. Xylanase is applied in the pH range, suitable for the temperature range of 40 60, and can withstand the temperature of high-temperature granulation for a few minutes.

3. It can be added in the telogen phase or post-fermentation of proteins in the saccharification process. Usually 25-75 g tons of wort or fermentation juice. The optimal dosage should be determined experimentally.

4. Xylan is the main component of wood fiber and non-wood fiber. During the pulp cooking process, the xylan partially dissolves, denatures, and re-deposits on the fiber surface. By using xylanase in this process, some of the redeposited xylan can be removed.

This increases the porosity of the pulp matrix, allowing trapped soluble lignin to be released, and also allowing chemical bleach to penetrate into the pulp more effectively. Overall, it increases the bleaching rate of the pulp and therefore reduces the amount of chemical bleach. The xylanase operated by Weifang Yurui ****** is a specific enzyme that degrades xylan, which only degrades xylan and cannot decompose cellulose.

Xylanase is formed by the joint action of different microorganisms and is best used over a pH and temperature range. Au-PE89 was developed using a special bacterial strain for the paper industry, and it is especially suitable for the high temperature and alkaline pH environment of kraft pulp.

<>1. Xylanase can degrade alabaxylan molecules into xylo-oligosaccharides with a small degree of polymerization, improve feed performance, and reduce the anti-nutritional effect caused by increased viscosity. 2. Xylanase can improve the activity of endogenous digestive enzymes and promote the digestion and absorption of nutrients. 3. Xylanase can promote the growth and reproduction of intestinal beneficial bacteria, inhibit the reproduction of harmful bacteria, and improve the immunity of animals.

4. Xylanase can improve feed metabolism and digestion.

1. Bovine xylanase type 1 effect

1. The feed contains more non-starch polysaccharides (mainly arabinoxylan, -glucan, mineral galactoside, pectin, cellulose, etc., of which arabinoxylan and -glucan account for 30%), and non-starch polysaccharides can combine a large amount of water, resulting in an increase in the volume of chyme in the animal digestive tract, an increase in viscosity, and the formation of a gel, which ultimately causes the digestive enzyme function to be unable to carry out normally, the chyme stays in the small intestine, and the micro-biotic imitation jujube reproduction is abnormal, and the growth of animals is hindered. Xylanase, on the other hand, can degrade the alabaxylan molecule and break it down into xylo-oligosaccharides with a low degree of polymerization, thereby improving feed performance and reducing the anti-nutritional effect caused by increased viscosity.

2. Xylanase can destroy the structure of plant cell wall, improve the activity and secretion of endogenous digestive enzymes, promote the digestion and absorption of nutrients, and improve the utilization rate of feed.

3. Xylanase promotes the growth and reproduction of intestinal beneficial bacteria, and can also inhibit the reproduction of harmful bacteria, thereby improving animal immunity and production performance.

4. Xylanase can improve the digestion and metabolism of feed and reduce the cost of feed formulation.

Second, what is the additive of xylanase

1. Baking industry.

1) Xylanase is used in the baking industry, which can speed up the rate of kneading, improve the operation performance of dough, increase the water holding capacity and air holding capacity of dough, increase the volume of bread, improve the quality of bread heart, and delay aging.

2) Generally, 10,000 units of food-grade enzyme preparations are used per 1000kg of flour).

2. Feed industry.

1) The addition of xylanase to the feed can eliminate or reduce the anti-nutritional effect of non-starch polysaccharides and improve feed performance.

2) Generally, the enzyme activity added to every 1000kg of feed is calculated as 100,000 units).

3. Brewing industry.

1) The addition of xylanase in the brewing process can reduce the viscosity of the extract and improve the yield of starch sugar.

2) Generally, enzyme activity is added to every 1000 kg dry basis in 50,000 units).

4. Juice production.

1) The addition of xylanase in the juice production process can improve the concentration rate and improve the product yield and quality.

2) Generally, enzyme activity is added to every 1000 kg dry basis in 50,000 units).

5. Xylo-oligosaccharide production.

1) Low-excitation xylose is widely used in functional foods, feed additives, and pharmaceutical and health products.

2) Generally, enzyme activity is added to every 1000 kg dry basis in 50,000 units).

Xylanolyticenzymesystems are a class of enzymes that degrade xylan, including -1,4-endoxylanase, -xylosidase, -L-arabinosidase, -D-glucuronidase, acetyl xylanase and phenolic esterase, which can degrade xylan hemicellulose in abundance in nature. Among the xylan hydrolase enzymes, -1,4-endoxylanase is the most critical hydrolase enzyme, which hydrolyzes xylan into oligosaccharides such as small oligosaccharides and xylobiose, as well as small amounts of xylose and arabinose by hydrolyzing the -1,4-glycosidic bond of the xylan molecule. - Xylosidase catalyzes the release of xylose residues by hydrolyzing the ends of xylo-oligosaccharides.

In addition, side-chain hydrolases such as -L-arabinofuranosidase, -glucuronidase, acetyl xylan esterase, and phenolic esterases that can degrade the ester bonds formed by arabinose side chain residues and phenolic acids (such as ferulic acid or coumaric acid) in xylan are also involved in the complete degradation of xylan.