Process of extracting amino acid for farm use with low value fish

A low-value fish and amino acid technology, applied in the chemical field, can solve the problem of unreasonable utilization of fish resources, and achieve the effect of good agricultural effect, comprehensive nutrition and simple process

Inactive Publication Date: 2007-12-19
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

[0004] What the present invention aims to solve is the problem that the waste and low-value fish resources

Method used

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  • Process of extracting amino acid for farm use with low value fish

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Purchase low-value miscellaneous fish such as octopus, clean and beat;

[0014] (2) Enzyme degradation: at a temperature of 50°C and a pH of about 6.5, add protease, the activity unit of the protease is 30000u / g, and the amount of protease is 8% of the protein content in low-value fish such as octopus. The ratio of water quality is the solid-to-liquid ratio ratio of 1: 7, in the presence of chelating agent ethylenediaminetetraacetic acid (EDTA), react for 4 hours, obtain the degradation solution of miscellaneous fish such as octopus; Degradation of miscellaneous fish such as octopus The rate is 92.53%. After degradation, the amino acid yield of the small hairtail and other miscellaneous fish proteins is 8.99%.

[0015] (3) Amino acids in the degradation solution accounted for 26.3% of the total amount of the degradation solution, trace elements accounted for 0.98%, and the pH of the degradation solution was alkaline.

[0016] Add trace elements (Fe, Mn, Cu, Zn, B)...

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Abstract

The technological process of producing amino acid fertilizer for farm use with low value fish includes adding protease into low value fish to degrade at 40-60 deg.c and pH 6-8, in the solid/liquid ratio of 1 to 6-8 and in the presence of EDTA for 4 hr to obtain degraded liquid; adding proper amount of trace elements and regulating pH value to 6.5. The present invention has reasonable process, can produce liquid amino acid fertilizer with the low value fish as waste, recover rich protein and minerals from low value fish and utilize resource effectively.

Description

technical field [0001] The invention belongs to the field of chemistry and relates to a process for extracting agricultural amino acids by using low-value fish as raw materials through enzymolysis and chelation techniques. Background technique [0002] In recent years, with the development of fishing industry and aquatic product processing industry, a large number of low-value fish have been produced. These low-value fish not only contain a large amount of protein, but also contain a variety of biologically active substances. It is reported that the crude protein content of medaka leftovers can reach 58.7% (dry basis), the crude protein content in the head of eel is as high as 13.5% (wet basis), and the protein content in the leftovers of bighead carp is 13.52%. In fact, these resources have not been rationally utilized. Although there is a process of extracting amino acids by degrading aquatic products, a large amount of minerals are deposited and discarded, and a large am...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05F11/00C12P13/04
Inventor 石伟勇郑伟汤少红罗光恩贾燕芳何延蒋玉根方芳
Owner ZHEJIANG UNIV
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