Method of near-infrared rapid detection of physicochemical indexes in wine

A physical and chemical index, near-infrared technology, which is applied in the field of rapid detection of physical and chemical index content in liquor by using near-infrared spectroscopy, and detection of physical and chemical index in liquor. , analyze the effect of low cost

Inactive Publication Date: 2013-10-16
ANHUI GUJING DISTILLERY
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Problems solved by technology

Although this method was advanced in China at that time, there were only 4 detectable items, ...

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  • Method of near-infrared rapid detection of physicochemical indexes in wine
  • Method of near-infrared rapid detection of physicochemical indexes in wine
  • Method of near-infrared rapid detection of physicochemical indexes in wine

Examples

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Embodiment 1

[0051]Take the storage-based liquor produced in 2012 as the liquor sample for calibration, 280 samples; determine its ethyl caproate, ethyl lactate, ethyl butyrate, ethyl acetate through gas chromatography, alcohol meter method, titration method Esters, ethyl valerate, caproic acid, acetic acid, n-propanol, isoamyl alcohol, alcohol content, total acid content.

[0052] Turn on the near-infrared spectrometer at 20°C to preheat for 30 minutes, pour the liquor into the sampling tube, that is, a 6mm optical path glass tube; use continuous wavelength near-infrared spectroscopy to scan the spectral region 780-2526nm, collect the near-infrared spectrum of the sample, and obtain the spectrum Figure such as figure 1 shown.

[0053] Add the obtained spectrum and the corresponding physical and chemical index data of wine samples into the chemometrics software, select the appropriate algorithm, band and preprocessing method, and use the chemometrics software to process to obtain the requ...

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Abstract

The invention discloses a method of near-infrared rapid detection of physicochemical indexes in wine, which is characterized in that representative wine samples are utilized to form a wine sample group; near-infrared band spectrum information of each wine sample in the wine sample group is obtained respectively in a setting modeling condition, and chemical measured values of the physicochemical indexes are obtained by utilizing a standard chemical measuring method; the near-infrared band spectrum information and the chemical measured values of the physicochemical indexes are corresponded one-to-one, and a calibration model of the required physicochemical indexes is built by utilizing a stoichiometry software; the to-be-detected wine samples are subjected to near-infrared spectrum scanning, and the physicochemical indexes of the to-be-detected wine are obtained through a predicted manner by utilizing the calibration model. The method has fast analysis speed, high efficiency, and low cost, has no pollution for environment, can provide reliable reference for analysis and quality-control of wine.

Description

technical field [0001] The invention relates to a method for detecting physical and chemical indicators in liquor, in particular to a method for rapidly detecting the content of physical and chemical indicators in liquor by using near-infrared spectroscopy, and belongs to the technical field of wine analysis. Background technique [0002] In the process of liquor production, a large amount of base wine is stored in the warehouse every day. According to the quantity and quality wine picking and grading storage guidelines implemented by our company, each type of base wine in each cellar must be sampled before storage. , physical and chemical testing and taste evaluation, only the base wine with qualified physical and chemical indicators and taste can enter the wine storage of this level, and the unqualified base wine can only be downgraded for storage. In the quality analysis of liquor, the detection methods provided in GB / T10345-2007 are usually used for the determination of ...

Claims

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Application Information

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IPC IPC(8): G01N21/35
Inventor 周庆伍李安军万春环刘国英汤有宏沈小梅姜利查枢屏王录
Owner ANHUI GUJING DISTILLERY
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