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Method for identifying fresh meat product and frozen-thawed meat product

A technology for meat products, fresh meat, applied in the field of analytical chemistry

Pending Publication Date: 2021-05-11
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one problem with meat authenticity testing is that there are often no fresh samples of meat to compare with the meat being tested

Method used

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  • Method for identifying fresh meat product and frozen-thawed meat product
  • Method for identifying fresh meat product and frozen-thawed meat product
  • Method for identifying fresh meat product and frozen-thawed meat product

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Utilize the method for identifying fresh meat products and frozen-thawed meat products of the embodiment of the present invention to detect beef, specifically as follows:

[0049] 1.1 Reagents and instruments

[0050] Synapt G2 Si time-of-flight mass spectrometer, equipped with iKnife handheld sampling device (Waters, USA); Pumpll elite needle pump injection sampler (Harvard, USA); Milli Q ultrapure water treatment system (Millipore, USA); Masslynx4.1 Data collection software, Live ID statistical analysis software (Waters, USA). Methanol, isopropanol (chromatographically pure, Merck Company of the United States); leucine enkephalin (Waters Company of the United States), and ultrapure water prepared by Millipore ultrapure water apparatus were used as experimental water.

[0051] 1.2 Sample collection and preparation

[0052] Fresh longissimus dorsi muscle was purchased from the local beef trading market, segmented in the laboratory, fat and connective tissue were remov...

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Abstract

The invention discloses a method for identifying a fresh meat product and a frozen-thawed meat product. The method comprises the steps of carrying out aerosolization treatment on a meat product to be detected so as to obtain aerosol of the meat product to be detected; carrying out ionization treatment on the aerosol so as to obtain an ionized substance to be detected; and detecting the ionized substance to be detected by using a mass spectrum, collecting mass spectrum data by using a high-resolution time-of-flight mass spectrum, and determining whether the meat product to be detected is a fresh meat product or a frozen-thawed meat product based on the mass spectrum data. The method is high in analysis speed, high in accuracy and free of reference substances.

Description

technical field [0001] The present invention relates to the field of analytical chemistry, in particular to methods for identifying fresh meat products and frozen-thawed meat products. Background technique [0002] Meat The main component of people's dietary structure, meat can provide high-quality protein and essential nutrients, such as essential amino acids, unsaturated fatty acids, minerals and vitamins. In general, the physical properties, chemical composition, nutritional content, microbial status and sensory properties of meat affect the quality of the meat. Freezing is one of the most convenient and effective ways to store beef. However, due to the imperfect cold chain logistics technology, fresh meat undergoes repeated freezing and thawing in the process of transportation, storage, processing and consumption. Repeated freezing and thawing will cause ice crystals in frozen muscle Recrystallization occurs after melting, resulting in a decrease in the number of ice cr...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/62
Inventor 张峰杨敏莉何启川刘通汤丽华李银龙贺木易
Owner CHINESE ACAD OF INSPECTION & QUARANTINE