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Method for quickly detecting main ingredients in Baijiu by utilizing near-infrared spectrum

A near-infrared spectroscopy and liquor technology, which is applied in the detection field of main components in liquor, can solve problems such as long detection time, and achieve accurate, true and reliable detection results.

Inactive Publication Date: 2016-02-03
陈旭
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for quickly detecting the main components in liquor by using near-infrared spectroscopy, so as to solve the problem of long detection time in the prior art

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0013] (1) Preparation of liquor samples: Collect the liquor samples, number them, seal them and refrigerate them.

[0014] (2) Acquisition of near-infrared spectra: based on Workflow, set the standard workflow (SOP) and analysis methods to collect the transmission spectra of liquor samples. The acquisition parameters are: resolution 7cm-1, scan times 50 times, spectral range 10000-3800cm-1.

[0015] (3) Model establishment: use the special chemometrics software TQAnalyst7.1 to establish a mathematical model between the near-infrared spectrum and the data measured by the standard method; the algorithm used for modeling is PLS (partial least squares) . The establishment of quantitative analysis model of near-infrared spectroscopy belongs to the category of chemometrics. In the quantitative analysis of near-infrared spectroscopy, the most commonly used multivariate correction algorithms are multiple linear regression (MultiLinearRegression, MLR), stepwise multiple linear regre...

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Abstract

The invention discloses a method for quickly detecting main ingredients in Baijiu by utilizing near-infrared spectrum. The method is characterized by comprising the following steps: (1) collecting Baijiu samples, numbering the Baijiu samples, and carrying out sealed refrigeration; (2) collection of the near-infrared spectrums: based on a workflow, setting a standard operating procedure (SOP) and an analysis method, and collecting transmitted spectrums of the Baijiu samples; (3) building of a model: building a mathematical model of data of the near-infrared spectrums and data of the same sample measured according to a standard method by using TQ Analyst spectrum analysis chemometrics software; (4) verification of the model: measuring a new Baijiu sample on a near-infrared instrument according to a method completely the same as that in the step 2, measuring the new Baijiu sample with the model built in the step 3, and comparing the result with a result measured according to the national standard method.

Description

technical field [0001] The invention relates to a method for detecting main components in liquor, in particular to a method for rapidly detecting main components in liquor by using near-infrared spectroscopy. Background technique [0002] The chemical composition of liquor is complex, and the determination of these indicators requires complex chemical methods, such as liquid chromatography, ultraviolet-visible spectrophotometer, balance, oven and other instruments. Sample analysis must be carried out under laboratory conditions, and the test report It takes a few days to get it. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for quickly detecting main components in liquor by using near-infrared spectroscopy, so as to solve the problem of long detection time in the prior art. [0004] The technical solution of the present invention is: the method for rapidly detecting main components in liquor by using ...

Claims

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Application Information

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IPC IPC(8): G01N21/3577G01N21/359
Inventor 陈旭
Owner 陈旭
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