Method for rapidly identifying adulterated meat

Abstract

The invention provides a method for rapidly identifying adulterated meat. The method comprises the following steps: 1, respectively preparing a pure meat sample, an adulterated meat sample and an unknown meat sample to be measured; 2, respectively acquiring the near infrared diffuse reflection spectra of the pure meat sample and the adulterated meat sample, continuously each of the above samples multiple times, and respectively taking the average value of obtained data as an original spectrum; 3, carrying out modeling wave band optimization selection on the original spectrum, and carrying out spectrum pretreatment on selected modeling wave bands; 4, extracting spectrum characteristic information by adopting a main component analysis process; 5, establishing an adulterated meat identifying model by adopting a discriminant analysis process; and 6, calculating the mahalanobis distance of each of the pure meat sample and the adulterated meat sample to determine the type of each of the pure meat sample and the adulterated meat sample; and 7, utilizing the adulterated meat identifying model to identify and analyze the sample to be measured, and calculating the mahalanobis distance of the sample to be measured in order to determine the type of the sample to be measured. The method can realize the rapid, accurate and stable qualitative classification discrimination of unknown meat.

Description

technical field [0001] The invention relates to the field of adulteration discrimination of meat products, in particular to a method for quickly identifying adulterated meat, which can realize qualitative discrimination of adulterated meat. Background technique [0002] According to the survey, one of the most common methods of meat adulteration and fraud is to use low-value meat as high-value meat. As the price difference of meat gradually widens, this kind of "adulteration driven by economic interests" is becoming more and more common. For example, incidents such as "fake beef", "duck turned into mutton skewers", and "fake mutton rolls" have been repeatedly exposed in recent years. Forging beef and mutton with pork and duck is currently the main adulteration method. It was also reported that many of the frozen mutton rolls and mutton slices sold in the farmers' markets in Beijing were miscellaneous meat. A study somewhere in the South last year found that 25 percent of me...

AI Technical Summary

Problems solved by technology

In addition, most of the adulterated meat uses flavors and fragrances to cover up the original taste, and the finished product is difficult to distinguish sensory. Chromatography technology is complicated, time-consuming and consumes a lot of solvents for sample pretreatment; while DNA technology uses PCR method to detect DNA sequences of a small amount Rapid amplification, through the analysis of nucleotide sequences, is used to detect adulterated products. Although the accuracy is high, the operation is cumbersome, expensive, and time-consuming. It is difficult to adapt to the needs of rapid detection in batches, and its use is often limited. Ordinary people cannot use it for detection, and the scope of application is limited

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