High temperature resistance diaphragm-controlled phytase pellets and preparation method thereof

A technology of phytase pellets and high temperature resistant film, applied in application, animal feed, animal feed, etc., can solve the problems of processing requirements, unsatisfactory thermal stability, etc., to achieve improved enzyme activity retention rate, good dispersibility, The effect of high enzymatic activity

Inactive Publication Date: 2010-08-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stress resistance of some current phytase products, especially the thermal stability, cannot meet the requirements of feed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

The preparation method of the high temperature resistant membrane-controlled phytase pellets of the present invention firstly adopts the extrusion spheronization method to prepare the phytase pellet core, and then uses the bottom spray fluidized bed to prepare the phytase pellets into coated pellets . include:

Step 1: Slowly add stabilizer and anti-sticking agent to the phytase fermentation broth under stirring, sieve and mix the auxiliary materials, and then mix the phytase fermentation broth and auxiliary materials to make a soft material;

Step 2: Place the soft material in an extrusion spheronization machine to extrude and spheronize to make a phytase pellet core;

(3) Prepare three layers of coating liquid separately, that is, slowly add the coating material to the water under stirring conditions and mix evenly. Take an appropriate amount of phytase pellets and place them in the fluidized bed, spray them evenly, and fluidize the pellets in the fluidized bed for 20-40 minut...

Example Embodiment

Example 1:

Phytase pellet preparation

Preparation of soft material: slowly add 5% sodium sulfate to the phytase fermentation broth under stirring, sieve and mix the auxiliary materials 100g corn starch and 150g white carbon black, and then mix the phytase fermentation broth and auxiliary materials to make a soft Material, spare.

Extrusion spheronization: Put the soft material in the extruder and adjust the extrusion speed. After all the elongated extrudates fall into the spheronizer, the spheronization starts. Adjust the appropriate spheronization speed. The spheronization time is 3-15 minutes. .

Preparation of phytase coated pellets

Water-soluble water-absorbing coating layer: 50 mL of 1% polyvinylpyrrolidone aqueous solution, which contains 30% potassium chloride and an appropriate amount of talc.

Water-soluble heat-stable coating layer: xanthan gum 5g, prepared into a solution with water, and set aside.

Fat-soluble water-blocking coating layer: EudragitRL / RS solution 45...

Example Embodiment

Example 2:

Preparation of phytase coated pellets

Preparation of soft materials: slowly add 4% magnesium sulfate to the phytase fermentation broth under stirring, sieve and mix the auxiliary materials 100g microcrystalline cellulose, 30g white carbon black, and 70g maltodextrin, and then mix the phytase fermentation broth Mix evenly with auxiliary materials to make soft material for use.

Extrusion spheronization: Put the soft material in the extruder and adjust the extrusion speed. After all the elongated extrudates fall into the spheronizer, the spheronization starts. Adjust the appropriate spheronization speed. The spheronization time is 3-15 minutes. .

Preparation of phytase coated pellets

Water-soluble water-absorbing coating layer: 40 mL of 1% polyvinylpyrrolidone aqueous solution, which contains 15% zinc sulfate, and an appropriate amount of finely powdered silica gel.

Water-soluble heat-stable coating layer: 6g gum arabic, prepared as a solution with water, for use.

...

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PUM

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Abstract

The invention discloses a high temperature resistance diaphragm-controlled phytase pellets and a preparation method thereof. The high temperature resistance diaphragm-controlled phytase pellet is composed of phytase pellets and coating materials which are coated on the outer layer and has high temperature resistance action, and the weight ratio is 20-80:80-20. The diaphragm-controlled phytase pellets prepared by the coating method has favorable liquidity and dispersibility and strong capability of resisting damp and heat, avoids enzyme activity loss in the feed processing, transportation and storage processes, and effectively improves the phytase heat stability and storage stability.

Description

High temperature resistant film-controlled phytase pellets and preparation method thereof technical field The invention relates to a preparation method of a feed additive, in particular to a preparation method of a high-temperature resistant film-controlled phytase pellet. Background technique Mineral phosphorus is one of the essential nutrients for animal growth and production. It is not only an important structural component of the body, but also widely participates in many important physiological and biochemical processes of the body. Livestock must obtain sufficient phosphorus from feed in order to maintain normal life and production activities. The proportion of plant-based feed in monogastric animal feed is very large, and 60-80% of the phosphorus is in the form of phytate phosphorus. Because monogastric animals lack the enzymes required to decompose phytate phosphorus, they cannot fully digest and utilize it. Therefore, expensive inorganic phosphate must be added t...

Claims

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Application Information

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IPC IPC(8): A23K1/165
Inventor 金一张萍王成润
Owner ZHEJIANG UNIV
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