Rapid identification method for fish varieties in tuna food

Abstract

The invention discloses a rapid identification method for fish varieties in tuna food. The tuna food is crushed into fine food grains, gas containing fish smell is generated thermostatically in a temperature range of 70 DEG C to 150 DEG C, and then an electronic nose is used to detected signal parameters of gas conductivity ratios of the fish smell, wherein if the signal parameter of the conductivity ratio is from 0.9981 to 1.0, yellow-fin tuna white meat is contained in the food; if the signal parameter is from 0.996 to 0.998, skipjack tuna white meat is contained in the food; if the signal parameter is from 0.995 to 0.994, yellow-fin tuna red meat is contained in the food; if the signal parameter is from 0.993 to 0.992, skipjack tuna red meat is contained in the food; and if the signal parameter is from 0.979 to 0.983, bigeye tuna fish meat is contained in the food. Therefore, fish varieties in tuna food can be rapidly identified. According to the invention, the identification method is convenient to operate, easy to learn and low in cost, and can be used to detect on site.

Description

technical field [0001] The invention relates to identification technology of biological species in food, in particular to rapid identification of fish species in tuna food. [0002] other methods. Background technique [0003] At present, the identification of biological varieties in food is mainly based on molecular biology (DNA or polypeptide) identification methods, which require DNA extraction, PCR reaction and electrophoresis. The identification technology is complicated, the identification cost is high, and the identification time is long. It can only be done in the laboratory. It can be detected, but cannot be detected on site. The types of fish meat in tuna food are mainly yellowfin tuna white meat, bonito white meat, yellowfin tuna red meat, bonito red meat and bigeye tuna meat, etc., which are made into sashimi, sushi and canned food, etc. The quality and market price are quite different, which brings confusion to consumers. Electronic nose (metal oxide gas sen...

AI Technical Summary

Problems solved by technology

[0003] At present, the identification of biological varieties in food is mainly based on molecular biology (DNA or polypeptide) identification methods, which require DNA extraction, PCR reaction and electrophoresis. The identification technology is complicated, the identification cost is high, and the identification time is long. It can only be done in the laboratory. Can be detected, but cannot be detected on-site

The types of fish meat in tuna food are mainly yellowfin tuna white meat, bonito white meat, yellowfin tuna red meat, bonito red meat and bigeye tuna meat, etc., which are made into sashimi, sushi and canned food, etc. The difference between the quality and the market price is large, which brings confusion to consumers