Method for detecting freshness of grass carp by using electronic nose

Abstract

The invention discloses a method for detecting freshness of grass carp by using an electronic nose. The method comprises the following steps of: putting a grass carp sample to be detected into a sample container, and standing for 30 minutes; inserting a sample introduction needle of the electronic nose into the sample container at normal temperature, simultaneously inserting an air filter filled with active carbon into the sample container to balance air pressure, and starting the electronic nose to suck the gas emitted by the stood sample into an electronic nose gas chamber; detecting the gas emitted by the sample through a gas sensor array in the electronic nose gas chamber for 50 seconds; and acquiring data acquired by the gas sensor array, processing the acquired data, and assessing the freshness of the grass carp according to the data processing result. The method has the advantages of being simple in analysis process, low in sample consumption, accurate and low in cost, and easy to popularize.

Description

technical field [0001] The invention relates to the field of detection of fish freshness, and more specifically relates to a method for detecting the freshness of grass carp by using an electronic nose based on a gas sensor array. Background technique [0002] Grass carp (Grass carp) is one of the four major species of freshwater farmed fish in China. Grass carp meat is sweet, warm, non-toxic, and has the effect of warming the stomach and harmonizing the stomach. The meat is fat and tender, delicious, and has high nutritional value. [0003] Freshness is an important indicator of the quality of fish or fish products and is very important for the final quality of the product. A series of indicators and methods have been developed to evaluate the freshness of fish meat, such as sensory evaluation methods, microbiological methods, physical and chemical methods, etc., but the above detection methods are difficult to meet the requirements of accurate and rapid detection. There ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a simple, fast and effective method for detecting the freshness of grass carp using an electronic nose in order to overcome the deficiencies in the prior art such as cumbersome process, high cost, long time consumption, sensor baseline drift, etc.

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