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Construction method and application of organic acid and volatile aroma compound fingerprint of Shanxi mature vinegar

A technology of aroma components and fingerprints, which is applied in the construction of fingerprints of organic acids and volatile aroma components, which can solve problems such as market confusion, complex components of Shanxi mature vinegar, and identification of the aging year of Shanxi mature vinegar.

Active Publication Date: 2019-08-13
太原市清徐县玉皇醋厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the acidity is mainly used as the identification basis for the aging year of Shanxi mature vinegar, but the composition of Shanxi mature vinegar is complex, and it is difficult to truly identify the aging year of Shanxi mature vinegar only by acidity or simple senses, causing confusion in the market

Method used

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  • Construction method and application of organic acid and volatile aroma compound fingerprint of Shanxi mature vinegar
  • Construction method and application of organic acid and volatile aroma compound fingerprint of Shanxi mature vinegar
  • Construction method and application of organic acid and volatile aroma compound fingerprint of Shanxi mature vinegar

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Example 1: Construction and verification of organic acid fingerprints of Shanxi aged vinegar aged in different years

[0031] Based on ion chromatography, the organic acid fingerprints of Shanxi mature vinegar with different aging years were constructed, and the aging years were collected for 1 year, 3 years, 5 years, 6 years, 8 years and 10 years, and 5 samples were selected for each aging year There are a total of 30 samples of different brands of Shanxi mature vinegar. See Table 3 for the sample information of Shanxi mature vinegar. The Shanxi old mature vinegar sample was diluted and injected, and the organic acids in the sample were separated by the isocratic elution procedure of ion chromatography, and the eight organic acids were accurately quantified by the external standard method.

[0032] Table 3 Information of Shanxi Mature Vinegar Samples

[0033]

[0034] The above-mentioned pretreatment method of Shanxi mature vinegar is as follows: take 1000 μL of Sh...

Embodiment 2

[0043] Example 2: Construction and verification of fingerprints of volatile aroma components in Shanxi aged vinegar aged in different years

[0044] Based on gas chromatography-mass spectrometry, the fingerprints of volatile aroma components of Shanxi mature vinegar were constructed, the volatile aroma components of Shanxi mature vinegar were extracted by headspace solid-phase microextraction technology, and the volatile aroma components in samples were separated by gas chromatography gradient heating method , the mass spectrometer performs full-scan mode to identify the characteristic ions of each component, compares it with the standard database, identifies the compound, and accurately quantifies it with the direct internal standard method.

[0045] The above-mentioned pretreatment method of Shanxi mature vinegar is as follows: take 3 mL of Shanxi mature vinegar, add 10 μL of internal standard 4-methyl-2-pentanol, absorb in the headspace at 40°C for 20 minutes, and then place...

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Abstract

The invention belongs to the technical field of fingerprints, and provides a construction method and application of the organic acid and volatile aroma compound fingerprint of Shanxi mature vinegar. An ion chromatography is used for constructing the fingerprint for eight main organic acids in the Shanxi mature vinegar, the organic acid is taken as a variable to carry out principal component analysis to authenticate the Shanxi mature vinegars of different ageing years, and clustering analysis is used for verifying the result reliability of the method. A gas chromatograph-mass spectrum couplingtechnique is used for constructing the fingerprint of volatile aroma compound in the Shanxi mature vinegars of different ageing years so as to detect 45 types of volatile aroma compounds, the principal component analysis is adopted to authenticate the Shanxi mature vinegars of different ageing years, and clustering analysis is carried out for verification. The method is convenient in operation, high in practicality and high in accuracy and can be applied to the authentication of the ageing years of the Shanxi mature vinegar.

Description

technical field [0001] The invention relates to the technical field of fingerprint construction, in particular to a construction method and application of fingerprints of organic acids and volatile aroma components of Shanxi mature vinegar. Based on the ion chromatography-electrochemical detector technology, the fingerprints of 8 main organic acids of Shanxi mature vinegar with different aging years were constructed, and the fingerprints of the volatile aroma components of Shanxi mature vinegar with different aging years were constructed by gas chromatography-mass spectrometry 18 kinds of esters, 3 kinds of volatile acids, 5 kinds of alcohols, 8 kinds of furan compounds and 11 kinds of heterocyclic compounds were detected, and principal component analysis was used to identify Shanxi mature vinegar with different aging years. Cluster analysis was performed for verification. Background technique [0002] The traditional aging process of Shanxi mature vinegar is called "sun in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/025
Inventor 许女张天震陈旭峰王如福孙列雄
Owner 太原市清徐县玉皇醋厂