Method for detecting fresh degree of chicken meat by electronic nose

Abstract

The invention discloses a method for using an electronic nose to detect the freshness of chicken. The invention aims at providing a method which uses the electronic nose to detect the freshness of chicken, has the advantages of rapidity and simpleness, easy use and objective and reliable detection result, and can reduce the impact of storing conditions to the detection result. The method comprises the following steps: a chicken sample to be detected is put into a sealed container and then heated in water bath with thermostatic control; the heated chicken sample is put into a test room, and then smell sent by the sample is detected by a gas sensor array which consists of four gas sensors of different types; the data which is aquired by the gas sensor array is collected and processed; and then the freshness of chicken is judged according to the processing result of the data. The detection method uses an electronic nose which consists of four gas sensors of different types to detect the chicken sample, and has the advantages of objective, accurate, and fast detection result, good repeatability, simple analysis process and small using amount of sensors, and reduces the extraction of eigenvalues.

Description

technical field [0001] The invention relates to a novel detection method for chicken freshness, more specifically, a detection method for chicken freshness based on a gas sensor array. Background technique [0002] Chicken has high-quality protein, fat and vitamins, etc., and is one of the important foods in people's lives. In the process of storage, processing and transportation, due to the action of itself and the external environment, microorganisms, etc., the flesh will spoil and deteriorate, producing bad flavor, resulting in a decline in quality. The nutritional value of spoiled chicken is reduced, the palatability is poor, and toxic and harmful substances will be produced at the same time, causing harm to eaters. Therefore, the inspection of chicken freshness is more and more paid attention to by people, and inspection methods and means are also constantly improved. Inspection of chicken freshness is generally divided into sensory inspection, physical and chemical i...

AI Technical Summary

Problems solved by technology

Using the above several inventions to detect the freshness of meat has the following disadvantages: 1) the number of sensors forming the detection device is too large, and a large amount of information irrelevant to the freshness of meat is collected, which affects the accuracy of the results; 2) the characteristics of each sensor Too many values ​​are extracted, introducing a lot of useless information

3) The analysis method is too complicated and inconvenient for practical application

This invention uses the reflection of light to detect the freshness of meat, and the detection accuracy is affected by the intensity of the light source, and the detection device and method are complicated.

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