Method for analyzing tobacco flavor components by adopting multi-dimensional hyphenated chromatographic technique

A technology of aroma components and combination technology, which is applied in the directions of analyzing materials, material separation, measuring devices, etc., can solve the problems of cumbersome operation steps, and achieve the effect of avoiding cumbersome operations.

Active Publication Date: 2011-11-23
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to provide a new method for separating and analyzing tobacco flavor components through liquid chromatograp...

Method used

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  • Method for analyzing tobacco flavor components by adopting multi-dimensional hyphenated chromatographic technique
  • Method for analyzing tobacco flavor components by adopting multi-dimensional hyphenated chromatographic technique
  • Method for analyzing tobacco flavor components by adopting multi-dimensional hyphenated chromatographic technique

Examples

Experimental program
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Effect test

Embodiment

[0064] Example Cigarette shredded tobacco

[0065] Extraction of Aroma Components from Cigarette Shredded Tobacco

[0066] At the same time, one end of the distillation extraction device was connected to a 1000 mL flat-bottomed flask filled with 25 grams of shredded tobacco, 350 mL of water and 90 g of sodium chloride, and heated using an electric furnace with controllable voltage. At the same time, the other end of the distillation extraction device was connected to a 100 mL flask filled with 45 mL of dichloromethane, and this end was heated on a water bath, and the temperature of the water bath was 60°C. After the extraction was completed, 9 g of anhydrous sodium sulfate was added and dried overnight. The extract was then concentrated to 2 mL.

[0067] 、 The liquid chromatography-capillary gas chromatography / mass spectrometry online separation and analysis process of cigarette tobacco aroma components is as follows: figure 1 , figure 2 Shown:

[0068] (1) After ...

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Abstract

The invention provides a method for analyzing tobacco flavor components by adopting a multi-dimensional hyphenated chromatographic technique. The method comprises the following steps: 1. extracting the tobacco flavor components; and 2. carrying out liquid chromatography-capillary gas chromatography/mass spectrometry (LC-CGC/MS) online segregation analysis on the tobacco flavor components: A. carrying out normal phase LC segregation on the tobacco flavor components; B. storing the LC effluent components in sample loops of multiposition valves of interfaces respectively; and C. after collection of the LC effluent components is completed, ensuring the fractions stored in the sample loops of the multiposition valves to be driven by carrier gases to respectively enter into a GC/MS to undergo segregation analysis by controlling ten-way valves in the interfaces of the hyphenated instruments. The method has the following prominent advantages: the tobacco flavor components can be segregated in advance through LC, the segregated components are respectively stored in the sample loops by online coupling interfaces and then the components respectively enter into the GC/MS to undergo accurate qualitative and quantitative analysis according to difference of the boiling points. The method not only has better orthogonal segregation property, but also has higher chromatographic peak capacity and better resolution and has simple operation steps.

Description

technical field [0001] The present invention relates to a method for separation and analysis of complex tobacco systems, specifically a multi-dimensional chromatographic on-line technology for separation and analysis of tobacco aroma components. The method utilizes sample pretreatment technology to extract tobacco aroma components, and then performs liquid chromatography on the extracted tobacco aroma components. The online separation and analysis of capillary gas chromatography / mass spectrometry has achieved the purpose of online, high-efficiency separation and high-sensitivity detection of tobacco aroma components. Background technique [0002] The chemical composition in tobacco is quite complex, and many components are present in very small amounts. So far, thousands of volatile and semi-volatile organic compounds have been isolated from tobacco. The aroma components that have an important impact on the smoking quality of cigarettes are basically contained in these vola...

Claims

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Application Information

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IPC IPC(8): G01N30/88
Inventor 刘绍锋颜权平王洪波张晓兵谢复炜刘惠民
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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