Processing and treating method of feathers

Abstract

The invention belongs to the technical field of treatment of waste in poultry industry, and particularly relates to a processing and treating method of feathers. The processing and treating method of the feathers comprises the following steps of (1) taking feathers, adding water in the weight ratio of materials to liquid being 1 to (5-9), and performing uniform mixing; (2) adjusting the temperature of a mixed solution obtained in the step (1) to 40-55 DEG C, adjusting the pH to 8.0-9.0, adding protease for enzymolysis, wherein the dosage of the protease is 0.5-2.5% of the weight of the feathers, performing enzymolysis for 10-14h, and performing enzyme deactivation treatment at 95-100 DEG C for 5 minutes; and (3) drying enzymatic hydrolysate obtained in the step (2) in a drying oven. The processing and treating method disclosed by the invention has the beneficial effects that when the method disclosed by the invention is used for processing and treating the feathers, the content of small peptides in prepared feather powder is 20.94%, which is greatly increased compared with the content of small peptides in common feather powder sold in the market only being 0.9%, and compared with the digestion rate of the feather powder sold in the market being 54.67%, the digestion rate of the feather powder obtained by the method disclosed by the invention is 79.29% and is also greatly increased.

Description

technical field [0001] The invention belongs to the technical field of poultry industry waste treatment, and in particular relates to a feather processing method. Background technique [0002] The use of protein feed can promote animal growth and obtain better feeding effect. At present, animal protein feed includes soybean meal, fish meal and meat meal, etc. These feeds have high protein content and better feeding effect, but they are expensive and some need to be imported. The lack of animal feed resources restricts the development of the breeding industry to a certain extent. Keratin is considered to be a high-quality protein feed. Comparative experiments have shown that keratin mixture and corn soybean meal have similar growth-promoting effects. Its rich source and low cost are expected to solve the problem of feed resource shortage. [0003] The preparation of feather keratin feed has gone through several stages. The feather powder was first made from poultry feathers ...

AI Technical Summary

Problems solved by technology

However, the temperature and pressure are difficult to control, and the product quality is unstable. If the temperature is too high, scorching will occur, and if the temperature is too low, there will be raw phenomenon. Due to the high temperature of the heat transfer oil, the protein will be severely denatured, especially the most sensitive cysteine. , lysine and methionine are also lost to varying degrees, and some products have a pepsin digestibility of less than 45%.

[0009] Its shortcoming of above-mentioned processing method is very obvious, therefore, need to improve above-mentioned method, invent a kind of method of processing and processing feather with mild action condition and little environmental pollution

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