Method for identifying fish producing area

Abstract

The invention relates to the technical field of production place discrimination, in particular to a method for identifying a fish production area. The method comprises the following steps: selecting afish sample from a real production area; acquiring otolith and carrying out pretreatment; analyzing the element content and the carbon-oxygen isotope content; establishing a database according to theelement content and the carbon-oxygen isotope content; establishing a prediction model according to the established database data; selecting otolith of an unknown fish sample, and carrying out pretreatment; analyzing the element content and the carbon-oxygen stable isotope content of the unknown fish sample otolith; and substituting the data results of the element content and the carbon-oxygen stable isotope content of the unknown fish sample otolith into a prediction model, and outputting a producing area result. According to the method, the otolith is creatively adopted as a characterization object of the commercially available fish production area, an otolith carbon-oxygen stable isotope ratio detection method is adopted as a distinguishing characteristic source, the principle is clearer, the production area of the fish can be more accurately and reliably judged by matching the detection method, and universality and popularization are better achieved.

Description

technical field [0001] The invention relates to the technical field of origin identification, in particular to a method for identifying the origin of fish. Background technique [0002] With the development of global economy, products produced in all parts of the world can be sold to every corner of the world. Due to the differences in climate, water resources and land, the quality and price of products will also vary significantly. The authenticity identification of the source of export products is extremely important, and it has played a great role in the customs department's identification of the authenticity of goods and price evaluation. [0003] As a kind of food that people like very much, fish is also a very large category of import and export products. However, there are very few studies on the detection of fish origin, mainly including stable isotope, element content, DNA and morphological identification. The principle of the current stable isotope and element co...

AI Technical Summary

Problems solved by technology

The above scheme is mainly to see whether the place of origin of the tested fish is a specific place of origin, and there is also the defect that the accuracy of the distinction is affected by the change of the food source. The problem of representativeness is difficult to unify, so it is also difficult to promote the use of this technology to trace the origin of fish

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