Method for producing film coating agent for phytase coating

Abstract

The invention relates to a method for preparing a film coating agent for coating phytase, in special coating multilayer outside phytase feed additive granules. The film coating agent is prepared from polyvinyl alcohol, co-povidone iodine, hydroxypropyl methylcellulose, talcum powder, magnesium stearate, tween-80 and ricinus oil which are evenly mixed at a high speed according to certain weight percentage. The method has the advantages that because of the presence of an isolated layer, the phytase feed additive granules can keep property of enzyme stable during usage, storage and sale, and have remarkably enhanced capability of resisting external adverse environments such as high temperature, high moisture and the like. After the surfaces of the granules are coated, the granules have better compactness, the activity content evenness of the enzyme is high, the animal feed is easy to be mixed evenly, and the animal is fed in balance; the granules have bright color, are round and beautiful, and have good flowing property; the granule specific gravity is similar to the feed specific gravity, and the granules are easy to be mixed evenly, and do not grade, generate static electricity, mutually adsorb and unite; and the coating material has good water solubility, can be quickly disintegrated and released in gastric juice, and has high bioavailability.

Description

One: technical field: [0001] The invention relates to a method for preparing a coating agent specially used for outer coating and separating layers of phytase feed additive particles. Two: background technology: [0002] Phytase is a new protease preparation and a green feed additive with excellent properties. The importance of phytase in the feed industry is becoming more and more prominent, but due to its photosensitivity, heat sensitivity and the influence of temperature and humidity, its properties are unstable. According to research, the most suitable acidic pH value of phytase activity is 5.5, and the optimum temperature is 45°C. Experiments have shown that the pH value and temperature have a certain impact on phytase. Add phytic acid to the feed Enzymes must consider the influence of these factors on enzymes. At present, most of the phytases produced in China are not coated. There are mainly two production methods: adsorption drying and spray drying. Adsorption dry...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to better solve the problem of low enzyme activity caused by high heat in the production process of phytase, and to achieve the purpose of heat insulation, moisture resistance, oxygen resistance and light avoidance after coating