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Method for extracting chitin and biological protein powder

A technology of chitin and protein liquid, which is applied in the preparation method of peptides, chemical instruments and methods, organic chemistry, etc., can solve the problems of cost reduction, and achieve the effect of improving the quality of agricultural products, extending the fresh-keeping period, and increasing the quantity

Inactive Publication Date: 2002-11-06
李长茂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention focuses on solving the problem of extracting chitin while extracting biological protein powder, greatly reducing the cost of the two, and meeting various needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Choose fat and large flies, use the mixture of pig lungs, chicken intestines, bean dregs and fish heads as feed from the slaughterhouse waste, and breed them into adult fly maggots or fly pupae at a temperature of 25°C.

[0012] The method of extracting chitin and biological protein powder:

[0013] The first step: material selection, alkaline water soaking. Select fly maggots without impurities, and soak them for 12 hours with a 2.5% NaOH solution heated to 92°C.

[0014] Step two: filter. Filter the soaked substance with a 90-mesh sieve to obtain filtrate chitin and filtrate protein solution.

[0015] The third step: acid soaking. Add HCl solution with a concentration of 2.2% to the filtrate protein liquid to make the pH value 5.3, and the protein precipitates and is filtered out.

[0016] The fourth step: washing and drying. The filtrate chitin and filtrate protein are washed with water to neutral respectively, and dried until the moisture content is lower than ...

Embodiment 2

[0019] The method of extracting chitin and biological protein powder:

[0020] The first step: material selection, alkaline water soaking. Select fly maggots or fly pupae without impurities, use 2.2% NaOH solution, heat to 98°C, and soak for 14 hours.

[0021] Step two: filter. Filter the above-mentioned soaked matter with a 100-mesh sieve to obtain filtrate chitin and filtrate protein liquid.

[0022] The third step: acid soaking. Add 2.8% HCl solution to the protein solution of the filtrate to make the pH value 6, precipitate the protein, and filter it out.

[0023] The fourth step: washing and drying. The filtrate chitin and filtrate protein are washed with water to neutral respectively, and dried until the moisture content is lower than 10%. Get chitin and biological protein powder. Crush 100 mesh fineness and pack.

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PUM

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Abstract

The extracting process of chitin and biological protein powder from raised fly includes: fly maggot or fly pupa material selection; soaking in NaOH solution of 2-3 % concentration at 90-100 deg.c for10-15 hr; filtering to obain chitin as filtrated matter and filtrate protein liquid; soaking filtrate protein liquid in HCl solution of 2-3 % concentration to separate protein through deposition and subsequent filtering; water washing and stoving the chitin as filtrated matter and filtered protein separately to a water content lower than 10% to obtain the chitin and biological protein powder products. The chitin is used as fertilizer to raise the resistance of crop and prolong the fresh preserving period. The protein powder containing rice protein and amino acids is excellent feed for milk cow and laying egg.

Description

(1) Technical field: [0001] The invention relates to a method for extracting chitin and biological protein powder, in particular to a technique for extracting chitin and biological protein powder by raising flies. (two) background technology: [0002] At present, most of the raw materials for producing chitin are shrimp and crab shells, which are obtained by chemical methods, the process is complicated, the pollution is serious, and the cost is expensive. Chitin is widely used in chromatographic carrier, environmental protection, purification of radioactive pollution, dye industry, glass fiber finishing, medicine, pesticide and fertilizer, etc., but its development has been affected by the problem of its cost. Protein is the main component that participates in the life activities of animals. At present, the supply of protein is seriously lacking in underdeveloped countries. The number of people suffering from malnutrition due to protein deficiency in the world is as high as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J1/00C07K1/14C07K2/00C08B37/08
Inventor 李长茂
Owner 李长茂
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