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Process for de-coloring feather/feather meal degradation product and application of de-colored product

A technology of degradation products and feather powder, applied in applications, animal feed, animal feed, etc., can solve the problems of poor palatability of feed, water pollution, black appearance, etc., achieve the effect of removing bitterness, simple process, and improving working conditions

Inactive Publication Date: 2010-11-03
CENT LAB FUJIAN ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a decolorization process of feathers or feather meal degradation products and the application of decolorization products. The environment causes problems such as pollution; the method of the present invention is simple, fast and effective

Method used

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  • Process for de-coloring feather/feather meal degradation product and application of de-colored product
  • Process for de-coloring feather/feather meal degradation product and application of de-colored product
  • Process for de-coloring feather/feather meal degradation product and application of de-colored product

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Effect test

preparation example Construction

[0017] The preparation process of feather or feather meal degradation product is:

[0018] Prepare feather or feather meal degradation product by alkaline hydrolysis alone: ​​add feather or commercially available feather meal to alkali solution with a mass concentration of 3% or less according to the ratio of 20% (according to mass / volume; g / ml) to the alkali solution, 30- Shake and degrade in a water bath at 90°C for 5-6 hours, centrifuge at 5000rpm for 10 minutes, collect the supernatant containing soluble protein, which is the feather powder alkaline hydrolysis solution, that is, the alkaline hydrolysis method to prepare feathers or feather meal degradation products;

[0019] Separate enzymatic hydrolysis method to prepare feather or feather meal degradation products: feather or commercially available feather meal, add single protease or compound protease at a mass ratio of 1 / 100-1 / 200, and add 20% (according to mass / volume; g / ml) Next, add distilled water to adjust the pH ...

Embodiment 1

[0033] 1. Take 500mL feather powder alkaline hydrolyzate, and slowly adjust its pH to 6.0 with 0.5mol / L sulfuric acid solution. Centrifuge at 5000rpm for 10min to collect the precipitate.

[0034] 2. Continue to slowly adjust the pH of the centrifuged supernatant in step 1 to 4.0 with 0.5 mol / L sulfuric acid solution. Centrifuge at 5000rpm for 10min to collect the precipitate.

[0035] 3. Dry the two precipitates separately at 70°C.

[0036] 4. Use the cyclone mill to crush the dried samples into powder to obtain different grades of finished products.

Embodiment 2

[0038] 1. Take 500mL of feather powder enzymatic hydrolysis solution, and slowly adjust its pH to 6.0 with 0.5mol / L sulfuric acid solution. Centrifuge at 5000rpm for 10min to collect the precipitate.

[0039] 2. Continue to slowly adjust the pH of the centrifuged supernatant in step 1 to 4.0 with 0.5 mol / L sulfuric acid solution. Centrifuge at 5000rpm for 10min to collect the precipitate.

[0040] 3. Precipitate the two parts separately and dry them at 70°C.

[0041] 4. Use the cyclone mill to crush the dried samples into powder to obtain different grades of finished products.

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Abstract

The invention provides a process for de-coloring a feather / feather meal degradation product and application of a de-colored product, belongs to the technical field of feather meal processing and aims to solve the problem that the feather / feather meal degradation product has the defects of black appearance, bitter taste, stinking smell, poor palatability when serving as an aquatic animal feed, water body environmental pollution and the like. A method is simple, rapid and effective and comprises the following steps of: adding pH adjusting reagents, such as sulfuric acid, hydrochloric acid and the like into a feather / feather meal alkaline hydrolysis and enzymolysis product; performing fractional separation on the product through the difference among various polypeptide isoelectric points in the product; and drying and smashing the product to obtain a finished product. The process has the advantages of simpleness, convenient implementation and capability of effectively de-coloring the feather / feather meal degradation product to form a fish meal-colored (wheat) product and greatly improving the appearance of the product. The bitter taste of the feather / feather meal degradation product treated by the process is removed effectively while nutritional value is not changed.

Description

technical field [0001] The invention belongs to the technical field of feather meal reprocessing, and more specifically relates to a decolorization process of feather or feather meal degradation product and application of the decolorized product. Background technique [0002] Feather meal is made from various poultry feathers. Feather meal has high protein content, and its amino acid composition is characterized by rich glycine, serine, cystine and isoleucine. It is one of the effective sources to solve the shortage of feed protein sources. However, due to the high content of keratin in feather powder, it is not easy to be digested and absorbed by objects. At home and abroad, a large number of scholars have studied the degradation and destruction of keratin in feather meal by alkaline hydrolysis, enzymatic hydrolysis and other biochemical technologies to produce feed feather meal that can be absorbed by passive objects. However, the appearance of the degradation products o...

Claims

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Application Information

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IPC IPC(8): A23K1/10
Inventor 宋永康余华姚清华罗钦林香信林虬李玥仁
Owner CENT LAB FUJIAN ACADEMY OF AGRI SCI
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