Coating micro-pill phytase and preparation method thereof

Abstract

The invention relates to coated micro-pellets phytase and the preparation method thereof. The coated micro-pellets phytase of the invention comprises micro-pellets phytase and a coating layer, the grain size of the coated micro-pellets phytase is about 30 to 60 meshes, the grains are dense, and the volume weight is feasible, wherein, the micro-pellets phytase comprises carriers and phytase in an effective amount, and all carrier components in the general carrier quantity have the proportion that corn starch is 30 to 50 wt percent, corn cob meal is 10 to 30 wt percent, marble dust is 5 to 15 wtpercent, and lactose is 10 to 25 wt percent; the coating layer comprises hydroxypropyl emthylcellulose, hydroxypropyl cellulose, polyacrylic acid resin, and polyvinylpyrrolidone, and the proportion of the components is 10 to 30 wt percent:10 to 30 wt percent:30 to 50 wt percent:10 to 30 wt percent. The invention also discloses the preparation method of the coated micro-pellets phytase. The invention handpicks unique modeling palletizing and coating material, can keep the stability of the enzyme activity when the phytase products are used and stored, and increases the capacity of resisting badexternal environments of high temperature, high humidity, etc.

Description

technical field [0001] The invention relates to a coated pellet phytase and a preparation method thereof. Background technique [0002] Phosphorus is one of the mineral elements necessary for animal growth, reproduction, bone calcification and metabolism. Due to the important role of phosphorus, it is very important to provide adequate phosphorus in animal diets. Although plant-based feed materials contain a large amount of phosphorus, 60-80% of them are in the form of phytate phosphorus, but in monogastric animals and aquatic products, there is a lack of enzymes required to decompose phytate phosphorus, and the utilization rate of phosphorus is only 0. ~30%, so a large amount of inorganic phosphorus needs to be added to the feed to supplement the deficiency of phosphorus, which causes a large increase in the cost of the feed. At the same time, the phytate phosphorus in the feed cannot be used by animals, and a large amount of it is excreted outside the body of the animal, ...

AI Technical Summary

Problems solved by technology

Although this method improves the high temperature of the enzyme to withstand granulation and extrusion and maintain good enzyme activity in the feed processing process, it does not mention the solubility, stability at normal temperature, and Affinity with feed, coating rate, etc.

[0006] CN 1775067A discloses a production method of coated granule phytase. The coated granule phytase prepared by the method has good fluidity, dispersibility and temperature resistance, but the method uses an enteric coating material, which is difficult to obtain in the stomach. It is difficult to dissolve in the medium, and it can only dissolve and play a role in the small intestine, and the alkaline environment in the intestine is not conducive to the function of phytase; in addition, the dissolution time of the coating material is 30 minutes, which is longer and plays a slower role; 3. This method uses ethanol as the enteric-coated film dissolution material, which is easy to produce pollution to the product and the environment; 4. Many feed pelleting temperatures reach above 85°C, while the CN 1775067A method only involves the retention rate of 80°C