Characterization method for detecting freshness of shrimp product

A freshness and product technology, applied in the field of characterization of the freshness of shrimp products, can solve the problem of low accuracy

Inactive Publication Date: 2013-06-19
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an accurate, effective, and simple method for detecting the freshness of shrimp products, so as to improve the shortcomings of the current traditional detection methods such as subjectivity, complexity, and low accuracy, and significantly improve The accuracy and objectivity of aquatic product testing methods

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  • Characterization method for detecting freshness of shrimp product
  • Characterization method for detecting freshness of shrimp product
  • Characterization method for detecting freshness of shrimp product

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specific Embodiment

[0054] Specific embodiment: a kind of characterization method for detecting the freshness of shrimp products comprises the following steps:

[0055] A. Processing of shrimp product samples:

[0056] A1. When the shrimp product sample mentioned is fresh shrimp: After washing the fresh shrimp with clean water, remove the dead and damaged individuals, and keep the fresh and uniform individuals; crush the ice to make the shrimp dormant, remove the head and skin of the shrimp and remove them. Shrimp meat, then drain the shrimp meat, crush it, put it into a sealed bag, and store it in an environment of 5°C for the determination of different freshness indicators;

[0057] A2. When the shrimp product sample mentioned above is frozen shrimp: After putting the frozen shrimp into the bottom of the container, thaw the frozen shrimp with running water with a temperature lower than 30°C until there are no hard lumps and ice crystals, and then remove the shrimp head and skin And remove the ...

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Abstract

The invention discloses a characterization method for detecting freshness of a shrimp product, relating to a detection method of the freshness. The characterization method comprises the steps of: simultaneously measuring TMA (timethylamine) and TMAO (trimethylamine oxide) in the shrimp product by utilizing a picric acid colorimetric method; obtaining a molar ratio of TMA / TMAO by carrying out data processing; carrying out correlation analysis on a measured value of volatile basic nitrogen of the shrimp product and the molar ratio of TMA / TMAO, so as to obtain a dependent equation; and substituting a standard value of the volatile basic nitrogen for evaluating a grade of the freshness into the dependent equation, so as to obtain a standard value of the molar ratio of timethylamine / trimethylamine oxide for evaluating a freshness degree of the shrimp product. According to the characterization method for detecting the freshness of the shrimp product, the disadvantages that the subjectivity, complexity and accuracy are low and the like in the conventional detection method at present can be improved, and the accuracy and the objectivity of an aquatic product detection method are remarkably improved; and the characterization method has the advantages that the cost is lowered, the detection is sensitive and the measuring effect is good.

Description

technical field [0001] The invention relates to a method for detecting freshness, in particular to a method for characterizing the freshness of shrimp products. Background technique [0002] In recent years, with my country's accession to the WTO, my country's fishery has integrated into the world's fishery development pattern with a more open attitude. With the implementation of the national plan to reduce ships and convert production and the preferential policies for the development of distant water fisheries, distant water fisheries, especially oceanic high seas fisheries, have developed rapidly. The foreign trade of my country's aquatic products is also booming. In 1999, the total import and export trade volume reached 2.6532 million tons, with a total trade volume of 4.43 billion US dollars; in 2000, the import and export trade volume was 4.05 million tons, and the trade volume reached 5.68 billion US dollars; in 2010, the import and export trade volume was 7.1606 mill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/31
Inventor 李军生胡金鑫阎柳娟黄国霞
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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