Quantitative detection method of sulfur compounds in liquor

A technology for compounds and liquors, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as difficult detection and inability to quantify key aroma components, and achieve the effects of fewer steps, improved accuracy and stability of results, and high detection efficiency.

Inactive Publication Date: 2021-04-20
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the difficult detection of sulfur-containing compounds in liquor and the inability to quantify key aroma components, the present invention provides a method for quantifying sulfur-containing compounds in liquor. Fragrance components can be quantitatively detected

Method used

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  • Quantitative detection method of sulfur compounds in liquor
  • Quantitative detection method of sulfur compounds in liquor
  • Quantitative detection method of sulfur compounds in liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1 Detection and Analysis of Sulfur Compounds in Hengshui Laobaigan 41% Xiaoqinghua Liquor

[0068] (1) Take 3.6mL white wine and dilute the alcohol content to 10%, put 15mL into a 40ml headspace bottle, add 4.5gNaCl, adjust the temperature of the water bath to 30°C, and the speed to 30rpm, insert the 75μm CAR / PDMS extraction head into the headspace bottle for enrichment 30min.

[0069] (2) After the extraction is completed, insert the extraction head into the inlet of the two-dimensional gas chromatography (250° C.), analyze for 5 minutes, and enter the GC×GC-SCD analysis.

[0070] (3) GC×GC-SCD chromatographic conditions are:

[0071] Injection port temperature: 250°C; splitless mode injection; carrier gas is high-purity helium, flow rate 1mL / min;

[0072] Chromatographic column: one-dimensional chromatographic column: DB-WAX (30m×0.25mm×0.25μm); two-dimensional chromatographic column: DB-5 (2m×0.25mm×0.25μm).

[0073] Temperature program: keep the initial t...

Embodiment 2～4

[0077] The only difference with Example 1 is that in step (3) GC×GC-SCD chromatographic conditions, the hydrogen flow rate of the sulfur chemiluminescence detector is 40mL / min (Example 2), 42mL / min (Example 3) 50mL / min (Example 4).

Embodiment 5～7

[0079] The only difference with Example 1 is that in step (3) GC×GC-SCD chromatographic conditions, the air flow of sulfur chemiluminescence detector is 55mL / min (Example 5), 62mL / min (Example 6), 65mL / min min (Example 7).

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Abstract

The invention relates to a quantitative detection method for sulfur compounds in liquor, characterized in that the method comprises the following steps: (1) enriching the volatile components in liquor; (2) enriching the volatile components in step (1) The volatile components are injected into the gas chromatography-sulfur chemiluminescence detector coupled device to perform quantitative detection of sulfur compounds. The present invention selects the sulfur chemiluminescence detector as the detector of the aroma components of the sulfur-containing compounds in liquor, quantitatively detects the sulfur-containing compounds, has selectivity and high sensitivity to the sulfur-containing compounds, obtains the content of the sulfur-containing compounds with less content and a low threshold value, and is suitable for Blending, quality inspection and other processes have a guiding role. The invention uses headspace solid-phase microextraction combined with gas chromatography-sulfur chemiluminescence detector technology to measure the content of sulfur-containing compounds in liquor, with simple operation, high result accuracy, good stability and high detection efficiency, and can meet the requirements of a large number of samples. Commercial needs.

Description

technical field [0001] The invention belongs to the technical field of liquor component detection, and specifically relates to a quantitative detection method for sulfur compounds in liquor. Background technique [0002] Chinese liquor has a long history and exquisite traditional brewing technology, and is a cultural treasure of the Chinese nation. Brewing raw materials are rich in sulfur-containing amino acids such as methionine and cysteine, which provide precursor substances for the production of sulfur-containing compounds. As of 2015, only 55 sulfur compounds have been detected in liquor. Sulfur compounds play a dual role in baijiu, positively affecting the flavor of the liquor when present in the right concentration. When the concentration is high, it will affect the quality and taste of the wine. Therefore, understanding the sulfur compounds in liquor and taking effective measures to control the types and contents of sulfur compounds in liquor are one of the keys t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/74
CPCG01N30/02G01N30/06G01N30/74
Inventor 郑福平宋学博孙宝国孙啸涛黄明泉孙金沅李贺贺
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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