Low energy- wasting and environment protection method for extracting chitin as well as biologically active substance thereof from shrimp shell

A bioactive substance, chitin technology, applied in food science, organic chemistry, calcium carbonate/strontium/barium, etc., can solve the problems of low product purity, low utilization rate of shrimp shells, high production cost, etc., and achieve good decolorization effect , The effect of thorough digestion of impurities and long storage time

Inactive Publication Date: 2008-05-14
湖北东方天琪生物工程股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems of low utilization rate of shrimp shells, low product purity, high production cost and the like when preparing chitin and other bioactive substances from existing shrimp (crab) shells
[0005] The invention also solves the technical problems of existing shrimp shells such as difficulty in fresh keeping and storage

Method used

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  • Low energy- wasting and environment protection method for extracting chitin as well as biologically active substance thereof from shrimp shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: After fresh shrimp shells are washed and drained, they are placed in a microwave oven at a controlled temperature of 80°C. After heating for 10 minutes, the shrimp shells are broken into small pieces, and placed in Boil in 5% NaOH solution for 2 hours, filter to obtain alkali treatment liquid and deproteinized shrimp shells, wash the shrimp shells with clear water until neutral and dry, and the weight ratio of material to liquid is 1:12 Immerse in the ratio of 2mol / LHCl solution and soak for 24 hours, then filter and dry to obtain the acid treatment solution and the decalcified shrimp shell, and the above decalcified shrimp shell is used in a ratio of 1:10 by weight ratio of feed to liquid 5% NaOH solution is processed once again, and the alkali treatment solution and shrimp shells are obtained after filtration, and then the shrimp shells are cleaned and dried, and then placed in a 1mol / L HCL solution in a ratio of 1:12 by weight ratio of material to liquid ,...

Embodiment 2

[0024] Example 2: After fresh shrimp shells are washed and drained, they are placed in a microwave oven at a controlled temperature of 80°C. After heating for 15 minutes, the shrimp shells are broken into small pieces, and placed in Boil in 8% NaOH solution for 2 hours, filter to obtain alkali treatment liquid and deproteinized shrimp shells, wash the shrimp shells with clear water until neutral and dry, and the weight ratio of material to liquid is 1:12 Immerse in the ratio of 2mol / LHCl solution and soak for 24 hours, then filter and dry to obtain the acid treatment solution and the decalcified shrimp shell, the above-mentioned decalcified shrimp shell is used in a ratio of 1:15 by weight ratio of feed to liquid 8% NaOH solution is processed once again, and the alkali treatment solution and shrimp shells are obtained after filtration, and then the shrimp shells are cleaned and dried, and then placed in a 1mol / L HCL solution in a ratio of 1:12 by weight ratio of material to liq...

Embodiment 3

[0025]Example 3: After fresh shrimp shells are washed and drained, they are placed in a microwave oven at a controlled temperature of 80°C. After heating for 12 minutes, the shrimp shells are broken into small pieces, and placed in Boil in 10% NaOH solution for 2 hours, filter to obtain alkali treatment solution and deproteinized shrimp shells, wash the shrimp shells with clear water until neutral and dry them, and use a weight ratio of 1:12 Immerse in the ratio of 2mol / LHCl solution and soak for 24 hours, then filter and dry to obtain the acid treatment solution and the decalcified shrimp shell, the above-mentioned decalcified shrimp shell is used in the ratio of 1:12 by weight ratio of feed to liquid 10% NaOH solution is processed once again, and the alkali treatment solution and shrimp shells are obtained after filtration, and then the shrimp shells are cleaned and dried, and then placed in a 1mol / L HCL solution in a ratio of 1:12 by weight ratio of material to liquid. , fi...

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Abstract

The invention relates to a low-consumption and environment-protection method for extracting chitin and bioactive substances from shrimp shell, which comprises the steps that: the fresh shrimp shell is arranged in a microwave oven for heating, then is arranged in the NaOH solution and boiled for 1 to 2 hours, then is immersed in the HCI solution for immersion; the shrimp shell is treated again with the NaOH solution, and is arranged in the sunshine and heavily sunned for decoloration after immersed in the HCI solution, thus the chitin product is obtained; when protein powder is extracted, protein is separated from the alkali treatment solution through the physical process of freezing and thawing; and when astaxanthin product is extracted, papain is adopted for degradation, then astaxanthin is obtained through ethanol extraction. The invention has the advantages of high material utilization ratio of shrimp shell, less acid and alkali consumption, less dosage of organic solvent, complete separation of various useful substances in shrimp shell, high purity of the obtained product, no discharge of waste acid, waste alkali and harmful organic solvent during reaction process, and effective use of various treatment solutions generated during reaction.

Description

technical field [0001] The invention relates to a method for preparing chitin and other biologically active substances from shrimp shells, in particular to a low-consumption and environment-friendly method for extracting chitin and biologically active substances from shrimp shells. Background technique [0002] Isolation of biologically active substances such as chitin, protein and astaxanthin from shrimp or crab shells. It is generally obtained by treatment with chemicals such as acid and lye. Such as the Chinese patent application number 02122565.6 discloses a method for producing chitin, astaxanthin and protein with fresh shrimp shells, which uses organic solvents, organic acids, and alkalis to separate biological activities such as calcium carbonate and protein and chitin. substances, although a variety of biologically active substances can be obtained by this method. However, in the reaction process, the reaction efficiency is low and the separation is not complete, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/28A23L1/33A23J1/00A23L33/10A23L33/16C01F11/18C07C403/24C08B37/08
Inventor 黄代勇刘雯蔡永刚
Owner 湖北东方天琪生物工程股份有限公司
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