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Construction method of Fourier transform infrared fingerprint spectrum of Shanxi mature vinegar with different ageing years, and application thereof

A Fourier transform and fingerprint technology, applied in the field of construction of Fourier transform infrared fingerprints, can solve the problems of identifying the aging year of Shanxi mature vinegar, market confusion, complex components, etc., and achieve effective identification and quality control.

Inactive Publication Date: 2019-08-13
SHANXI AGRI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the acidity is mainly used as the basis for identifying 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 of Fourier transform infrared fingerprint spectrum of Shanxi mature vinegar with different ageing years, and application thereof
  • Construction method of Fourier transform infrared fingerprint spectrum of Shanxi mature vinegar with different ageing years, and application thereof
  • Construction method of Fourier transform infrared fingerprint spectrum of Shanxi mature vinegar with different ageing years, and application thereof

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Embodiment 1

[0024] Due to its unique aging process of "exposed to the sun in summer and ice in the east", the concentration of water in the aging process of Shanxi mature vinegar is also accompanied by a series of biochemical reactions, which makes the taste of mature vinegar more mellow, better in flavor and efficacy. . At present, the aging years of Shanxi mature vinegar sold in the market are confused, and the quality is uneven. Adulterated or shoddy products will destroy the nutritional value and sensory properties of Shanxi mature vinegar with high aging years. We use Fourier transform infrared spectroscopy technology to accurately and scientifically observe the differences in the main flavor substances of Shanxi mature vinegar aged in different years, and use acid compounds, ester compounds, alcohol compounds, aldehyde compounds, phenolic compounds, sugar and furfural Based on the peak area of ​​each functional group of similar compounds, the fingerprints of Shanxi mature vinegar wi...

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Abstract

The invention belongs to the technical field of the food detection, and provides a construction method of Fourier transform infrared fingerprint spectrum of Shanxi mature vinegar with different ageingyears, and application thereof. The nature determination on the principle compounds of the Shanxi mature vinegar is performed by utilizing attenuated total-reflection Fourier transform infrared spectrum, the characteristic wavelength is used as the variable to perform the principle component analysis, thereby identifying the Shanxi mature vinegar in different ageing years, and a clustering analysis is used for verifying the result reliability. The method disclosed by the invention is high in accuracy rate, strong in practicability, and has important significance for identifying and protectingthe Shanxi mature vinegar in different ageing years.

Description

technical field [0001] The invention belongs to the technical field of food detection, and in particular relates to a construction method and application of Fourier transform infrared fingerprints of Shanxi aged vinegar with different aging years. Construction of fingerprints of Shanxi mature vinegar with different aging years based on Fourier transform infrared spectroscopy, 4000 cm -1 -600cm -1 The main components of the four famous vinegars can be more comprehensively characterized in the band, and the 1600cm -1 -900cm -1 The wavelength is the characteristic variable of the fingerprint, and the principal component analysis is carried out to identify Shanxi mature vinegar aged in different years, and the cluster analysis is used for verification. Background technique [0002] Shanxi old mature vinegar is one of the four traditional famous vinegars in my country. Its color is purple, mellow and soft. Its traditional aging process is called "summer sun, winter ice". The m...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3577
CPCG01N21/359G01N21/3577G01N2021/3595
Inventor 许女张天震陈旭峰王如福李雅茹
Owner SHANXI AGRI UNIV
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