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Method for processing fent by comprehensive utilizing shrimp by enzyme method

A kind of scrap and enzymatic technology, applied in the field of processing scraps, can solve the problems of high recovery cost of protein and astaxanthin and difficult industrial production, and achieve the effect of promoting technological transformation and technical level, stable quality and improving recovery rate.

Inactive Publication Date: 2005-07-27
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of industrial production, it is mainly used to produce chitin at present, and the recycling of protein and astaxanthin is difficult to realize industrial production due to the high cost of recycling.

Method used

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  • Method for processing fent by comprehensive utilizing shrimp by enzyme method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw material is fresh shrimp processing waste, TVBN≤15mg / 100g. After crushing the leftovers, add water according to the mass ratio of leftovers / water 1:1, heat to 55°C and keep the temperature constant, adjust the pH to 8.0, add compound enzymes for enzymolysis, the enzymes are trypsin and Alcalase protease, two The ratio of the two enzymes is 1:1, the total dosage of the compound enzyme is 5000U / g protein according to the enzyme activity, and the reaction is carried out in the dark and stirred for 2 hours. After the reaction, use a 60-mesh filter to centrifugally filter, and the filtrate is vacuum-concentrated to 28% of soluble solids, and spray-dried to obtain protein powder rich in astaxanthin, with a protein content of 64.5% and an astaxanthin content of 1048 mg / kg. The remaining residue after filtration is used for the preparation of chitin.

Embodiment 2

[0029] The raw material is fresh shrimp processing waste, TVBN≤15mg / 100g. After crushing the leftovers, add water according to the mass ratio of leftovers / water 1:1.25, heat to 45°C and keep the temperature constant, adjust the pH to 8.0, add compound enzymes for enzymolysis, the enzymes are trypsin and AS.1398 protease , the ratio of the two enzymes is 4:6, the total amount of the compound enzyme is 3000U / g protein according to the enzyme activity, and the reaction is stirred for 3 hours in the dark. After the reaction, use a 60-mesh filter to centrifugally filter, and the filtrate is vacuum-concentrated to 20% of soluble solids, and spray-dried to obtain protein powder rich in astaxanthin, with a protein content of 58.1% and an astaxanthin content of 650 mg / kg. Other operations are the same as in Example 1.

Embodiment 3

[0031] The raw material is fresh shrimp processing waste, TVBN≤15mg / 100g. After crushing the leftovers, add water according to the leftovers / water mass ratio 1:1.5, heat to 65°C and keep the temperature constant, adjust the pH to 8.5, add compound enzymes for enzymolysis, the enzymes are trypsin and papain, two The ratio of the enzymes is 6:4, the total amount of the compound enzyme is 1000U / g protein based on the enzyme activity, and the reaction is stirred for 1 h in the dark. After the reaction, use a 60-mesh filter to centrifugally filter, and the filtrate is vacuum-concentrated to 35% of soluble solids, and spray-dried to obtain protein powder rich in astaxanthin, with a protein content of 55.8% and an astaxanthin content of 245mg / kg. Other operations are the same as in Example 1.

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Abstract

A process for reclaiming the leftover of shrimp by enzyme method includes such steps as using the composite enzyme to hydrolyze the leftover of fresh shrimp, filtering, concentrating to obtain the concentrated protein rich in astaxanthin, and spray drying. Its product can be used to prepare the flavouring.

Description

technical field [0001] The invention provides a method for comprehensively utilizing shrimp processing leftovers by an enzymatic method, and relates to the field of food biotechnology. Background technique [0002] my country is rich in shrimp resources. In recent years, with the rapid development of the shrimp processing industry, a large number of processing wastes have been produced. These processing wastes contain a large amount of useful ingredients such as protein, chitin and astaxanthin. If they are not recycled, they will Cause serious waste of resources. [0003] At present, in addition to directly using the leftovers as feed at home and abroad, it is mainly used for the processing of chitin. However, at present, domestic chitin is mainly processed by chemical methods, which use a large amount of acid and alkali, and protein is usually not recycled, resulting in waste of resources and easy to cause serious environmental pollution; The product quality is not high an...

Claims

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Application Information

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IPC IPC(8): A23J3/04A23J3/34
Inventor 夏文水姜启兴
Owner JIANGNAN UNIV
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