Method for extracting chitin from shrimp and crab shells

A technology of chitin and shrimp and crab shells, which is applied in the field of extracting chitin from shrimp and crab shells, can solve the problems of long time and achieve the effects of shortened process time, mature process and mild reaction conditions

Active Publication Date: 2014-07-23
江苏盐城盐都现代农业产业园发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been reported that using a strain of Lactobacillus BR-3 isolated from shrimp shells, the inoculation amount was 10%, the glucose concentration was 4.5%, the solid-liquid ratio was 1:3, the fermentation temperature was 35°C, and the fermentation time was 3 Under the condition of -4d, chitin with an ash content lower than 6% can be obtained, but it takes a long time to treat it with microorganisms only.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for extracting chitin from shrimp and crab shells, comprising the steps of:

[0022] a. Raw material processing: wash 10kg of shrimp head with pure water and mince it;

[0023] b. Ultrasonic treatment: add 10 times the weight of pure water to the crushed raw materials, ultrasonic treatment for 10 minutes, the operating temperature is 25 ° C, and the power is 300 W. After completion, filter and collect the filter residue;

[0024] c. High-pressure treatment: add purified water to the filter residue obtained in step b, maintain high pressure at 121°C for 40 minutes, filter, and collect the filter residue;

[0025] d. Acid treatment: add 1.0 mol / L hydrochloric acid solution equivalent to the same quality of the filter residue to the filter residue obtained in step c, soak for 1 h, wash with water until neutral, centrifuge, and freeze-dry to obtain 1.82 kg of chitin with a content of 98.5%.

Embodiment 2

[0027] A method for extracting chitin from shrimp and crab shells, comprising the steps of:

[0028] a. Raw material processing: wash 10kg of crab shells with pure water and grind them;

[0029] b. Ultrasonic treatment: Add 20 times the weight of pure water to the minced raw materials, ultrasonic treatment for 20 minutes, the action temperature is 45 ° C, and the power is 200 W. After completion, filter and collect the filter residue;

[0030] c. High-pressure treatment: add purified water to the filter residue obtained in step b, maintain high pressure at 121°C for 20 minutes, filter, and collect the filter residue;

[0031] d. Acid treatment: add 3.0 mol / L hydrochloric acid solution equivalent to 3 times the mass of the filter residue to the filter residue obtained in step c, soak for 1 h, wash with water until neutral, centrifuge, and freeze-dry to obtain 1.93 kg of chitin with a content of 98.6%.

Embodiment 3

[0033] A method for extracting chitin from shrimp and crab shells, comprising the steps of:

[0034] a. Raw material processing: Wash 10kg of shrimp heads and crab shells with pure water and mince them;

[0035] b. Ultrasonic treatment: add 15 times the weight of pure water to the crushed raw materials, ultrasonic treatment for 15 minutes, the action temperature is 30 ° C, and the power is 250 W. After completion, filter and collect the filter residue;

[0036] c. High-pressure treatment: add purified water to the filter residue obtained in step b, maintain high pressure at 115°C for 30 minutes, filter, and collect the filter residue;

[0037] d. Acid treatment: add 3.0 mol / L hydrochloric acid solution equivalent to twice the mass of the filter residue to the filter residue obtained in step c, soak for 1 h, wash with water until neutral, centrifuge, and freeze-dry to obtain 1.88 kg of chitin with a content of 99.1%.

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Abstract

The invention discloses a method for extracting chitin from shrimp and crab shells. The method comprises the following steps: raw material treatment, ultrasonic treatment, high-pressure treatment, acid treatment, and drying to obtain the product. Compared with the existing acid and alkali treatment, microbiological treatment and the like, the method has the advantages that the time is greatly shortened, and the obtained chitin is high in yield and high in content.

Description

technical field [0001] The invention relates to a preparation method of chitin, in particular to a method for extracting chitin from shrimp and crab shells. Background technique [0002] Chitin, also known as chitin, was discovered by French scholar Braconno in 1811, and was extracted from crustacean shells by Ogier in 1823, and named CHITIN, translated as chitin. Chitin has the functions of anti-cancer, inhibiting cancer and tumor cell metastasis, improving human immunity and protecting liver and detoxification. It is especially suitable for diabetes, liver and kidney disease, high blood pressure, obesity and other diseases, and is beneficial to the prevention of cancer cell lesions and adjuvant radiotherapy and chemotherapy in the treatment of tumor diseases. Moreover, chitin is chemically inactive, does not change with body fluids, does not react with foreign bodies with tissues, is non-toxic, and has the characteristics of anti-thrombosis and high-temperature disinfecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/08
Inventor 归三岷
Owner 江苏盐城盐都现代农业产业园发展有限公司
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