Method for quickly detecting chicken enterobacteriaceae content in online mode

Abstract

The invention discloses a method for quickly detecting a chicken enterobacteriaceae content in an online mode. The method comprises the steps of acquiring a hyperspectral image of a calibration set chicken sample, pretreating the acquired spectral image, then recognizing a target area and extracting average spectral data of the spectral image; substituting the extracted spectral data into a formula. According to the method disclosed by the invention, 17 optimal wavelengths are extracted from 484 full wavebands, so that a lot of redundant information is removed, useful information is extracted,and the calculated amount of data analysis is reduced; thus, accuracy of a partial least squares model is improved, and a large-scale online production requirement of a meat enterprise is achieved. Compared with the prior art, the method disclosed by the invention has the following beneficial effects that a sample to be detected is prevented from being pretreated, only non-contact spectrum scanning is performed on the sample, and no destructiveness is generated to the sample; no chemical reagent is used by the method disclosed by the invention, so that greenness is achieved, and cost is reduced; the method disclosed by the invention is easy to operate, can save time and can achieve large-scale online detection on the chicken enterobacteriaceae content.

Description

technical field [0001] The invention relates to the field of food quality and safety detection, in particular to a method for quickly detecting the content of Enterobacteriaceae in chicken on-line. Background technique [0002] Among the many meat products today, chicken is suitable for a variety of cooking methods. Its meat is tender, delicious, and rich in various nutrients, so it has the effect of nourishing and nourishing the body. Chicken, cures nausea, abdominal pain, bone pain, mastitis, anti-abortion" and other effects, and is very popular among consumers. Chicken is a food that is highly susceptible to contamination by endogenous and exogenous microorganisms, and as the microbial content increases sharply, the freshness of the chicken will also decrease. At present, Enterobacteriaceae is used as one of the indicators of food hygiene in my country, and Enterobacteriaceae is also one of the must-test items for quality control in international food microbiology labora...

AI Technical Summary

Problems solved by technology

When the content of Enterobacteriaceae in chicken reaches a certain value, once consumers eat this kind of chicken by mistake, it will bring hidden dangers to consumers' health problems

The current national standards for the detection of Enterobacteriaceae in food are based on GB4789.3-2016 "Food Microbiological Examination of Coliform Bacteria Counting", but this method has the disadvantages of cumbersome steps, long cultivation period, high cost and damage to samples, which is difficult Realize the modern meat industry's requirements for fast and non-destructive testing

[0003] The hyperspectral imaging technology, which combines traditional spectral technology and image technology, can simultaneously capture the spectral and image information of the measured sample, and has the characteristics of no preprocessing, non-destructive, fast, easy to operate and low cost, etc. A lot of research has been done on the non-destructive testing of meat products, but less research has been reported on Enterobacter chicken

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