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Method for analyzing constituents of white spirit

A technology for component analysis and separation analysis, applied in the direction of analyzing materials, material separation, measuring devices, etc., to achieve the effect of high sensitivity, accurate and reliable results

Inactive Publication Date: 2012-10-03
SICHUAN JIANNANCHUN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, there is no report on the application of stirred adsorption extraction technology SBSE and GC×GC-TOFMS to the analysis of liquor components

Method used

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  • Method for analyzing constituents of white spirit
  • Method for analyzing constituents of white spirit
  • Method for analyzing constituents of white spirit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] 1. Main reagents and samples

[0036] Purified water (treated by Milli-Q Advantage A10 ultrapure water system), a certain Luzhou-flavor liquor.

[0037] 2. Main instruments

[0038] The GC×GC system is composed of Agilent6890 gas chromatograph and cold spray modulator; the first chromatographic column of comprehensive two-dimensional gas chromatograph: DB-FFAP (J&W Scientific, Agilent Technologies); the second chromatographic column DB-1701 (J&Wscientific, Agilent Technologies) Technologies). The time-of-flight mass spectrometer is PegasusIV from Leco Company, USA. SBSE stirring rod: Germany GERSTEL company; TDU thermal desorption sampling device: Germany GERSTEL company.

[0039] 3. Specific method

[0040] (1) Standardize the conditions of the new SBSE stirring rod by placing the SBSE stirring rod in an empty thermal desorption glass tube and desorbing it in a thermal desorption instrument with a desorption temperature of 240 ° C for 30 minutes, and helium The fl...

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Abstract

The invention discloses a method for analyzing constituents of white spirit, which is capable of detecting more constituents. The method comprises the steps of: carrying out condition normalization on an SBSE (stir bar sorptive extraction) stir bar by a thermal desorption apparatus, then absorbing target matters in a white spirit sample by the SBSE puddler, transferring the SBSE stir bar to a desorption chamber of the thermal desorption apparatus, desorbing the absorbed target matters to a program heating sample inlet through the thermal desorption apparatus, providing the target matters in GC*GC-TOFMS (comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometer) to separate and analyze via the program heating sample inlet, wherein the used SBSE stir bars respectively are the SBSE stir bar with a polydimethylsiloxane absorption layer and the SBSE stir bar with a polyethylene glycol modified organic silicon absorption layer. The result is accurate and reliable; the sensitivity is high, and the method can be used for analyzing the constituents of all white spirit, is particularly suitable for analysis of a micro-constituent of which the mass percentage is 0.01-0.1%, and also can be used for analysis of a trace constituent of which the mass percentage is smaller than 0.01%.

Description

technical field [0001] The invention relates to the field of liquor component analysis, in particular to a liquor composition analysis method. Background technique [0002] Chinese traditional solid-state fermented liquor is a unique product with a long history of the Chinese nation. It is one of the six famous distilled liquors in the world and is highly praised by drinkers at home and abroad. It selects a variety of high-quality grains as raw materials, uses a variety of microorganisms to inoculate naturally to make koji, and the unique brewing process endows it with unique taste characteristics. [0003] Liquor contains a large number of trace aroma components. The trace components in traditional Chinese solid-state fermented liquor are very rich, including alcohols, esters, acids, aldehydes and ketones, carbonyl compounds, heterocyclic compounds, etc., some of which also have physiological activities. [0004] In recent years, with the continuous improvement of instrum...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
Inventor 徐占成陈勇王双周泽华
Owner SICHUAN JIANNANCHUN GRP CO LTD
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