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Quantitative detection method for sulfur-containing compound in Baijiu

A compound and liquor technology, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as difficult detection and inability to quantify key aroma components, and achieve high sensitivity, high resolution, and improved separation ability.

Inactive Publication Date: 2018-06-19
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 for sulfur-containing compound in Baijiu
  • Quantitative detection method for sulfur-containing compound in Baijiu
  • Quantitative detection method for sulfur-containing compound in Baijiu

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 temp...

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 a sulfur-containing compound in Baijiu. The method is characterized by comprising the following steps: (1) gathering volatile components inBaijiu; and (2) feeding the volatile components gathered in step (1) into a gas chromatography-sulfur chemiluminescence detector combined device, and quantitatively detecting the sulfur-containing compound. The sulfur chemiluminescence detector is used as the detector for sulfur-containing compound aromatic component of Baijiu and is used for quantitatively detecting the sulfur-containing compound, the selectivity and sensitivity for the sulfur-containing compound are high, the sulfur-containing compound with low content and low threshold value can be obtained, and the quantitative detectionmethod has instruction effect for the process such as blending, and quality inspection. The headspace solid-phase microextraction is combined with the gas chromatography-sulfur chemiluminescence detector technology to determine the content of the sulfur-containing compound in Baijiu. The quantitative detection method is simple in operation, high in result accuracy, good in stability, high in detection efficiency and capable of meeting the commercialization requirement of the mass detection of samples.

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 Applications(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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