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Method for analyzing aroma components in tobacco

An analysis method and technology of aroma components, applied in the field of tobacco, can solve problems such as insufficient sensitivity, and achieve the effects of low cost, rich aroma components, and convenient equipment assembly

Pending Publication Date: 2021-12-10
SHANGHAI TOBACCO GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For trace aroma components in tobacco leaves and smoke, the sensitivity of the above methods is still insufficient

Method used

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  • Method for analyzing aroma components in tobacco
  • Method for analyzing aroma components in tobacco
  • Method for analyzing aroma components in tobacco

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] The analysis method of aroma component in the present embodiment tobacco, the steps are as follows:

[0119] 1) Use a smoking machine to smoke the cigarettes, use the Cambridge filter to capture the mainstream smoke, put the Cambridge filter into the flask, put the flask into a temperature-controlled water bath heating pot, and heat it at 70°C for 15 minute;

[0120] 2) After equilibration, continue to heat the sample bottle through a temperature-controlled water bath heating pot, the heating temperature is 70°C, and use an electric diaphragm air pump to prepare air. The outlet flow rate of the electric diaphragm air pump is 800mL / min, and the sample in the sample bottle is Purging for 18 hours;

[0121] 3) The purge air was enriched using an adsorption liner (0.25 inches in diameter and 3.5 inches in length) packed with 200 mg of Tenax sorbent. The adsorption liner is connected with the long-necked bottle, spiral condenser, heating module and circulating stripping pu...

Embodiment 2

[0132] Carry out repeated investigation to the method of the present invention. The results showed that the RSDs of typical aroma components in mainstream smoke were all less than 10%, as shown in Table 2. Compared with the flue gas data obtained by the conventional solvent extraction method (using 50mL organic reagent to extract the Cambridge filter, 1uL sample injection), the response of the typical aroma components obtained by the method of the present invention is significantly increased, which is about 500 times that of the conventional solvent extraction method. This proves that the components extracted by the method of the present invention are comprehensive and typical, the relative content of each component is high, and the repeatability is good.

[0133] Table 2

[0134]

Embodiment 3

[0136] Select 100g of shredded tobacco and put it into a long-necked sample bottle, and heat and balance it in a water bath at 40°C for 15 minutes. Then, the equilibrated shredded tobacco was kept heated at 40°C, and air was continuously purged through the air inlet pipe into the long-necked sample bottle by the circulating blowing pump. The air purging flow rate was 1000ml / min, and the purging time was 24h. The gas for purging shredded tobacco was condensed at 5°C by the spiral condenser tube, and was then fed into the adsorption liner through the gas outlet pipe for enrichment for 24 hours. Finally, the adsorption liner enriched with aroma components was taken out and analyzed by thermal desorption-gas chromatography-mass spectrometry. Analyze with technology. In addition, the adsorption liner enriched with aroma components can also be taken out, and eluted with absolute ethanol 3 times, each time 2mL, to obtain the desired aroma component samples.

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Abstract

The invention provides a method for analyzing aroma components in tobacco, which comprises the following steps: continuously heating a tobacco sample to be detected, enriching the aroma components in the tobacco by adopting a closed loop gas stripping method, performing thermal desorption, and performing qualitative and quantitative analysis by adopting a gas chromatograph-mass spectrometer. According to the method, the problem that the adsorption effect of the adsorbent becomes poor in the enrichment process can be effectively avoided, the method also has a good adsorption effect on the to-be-detected tobacco sample with the high moisture content, and the test of the aroma components in the tobacco is more accurate and effective.

Description

technical field [0001] The invention relates to the field of tobacco, in particular to an analysis method for aroma components in tobacco. Background technique [0002] The analysis of aroma components in tobacco is of great significance for the analysis of tobacco leaf style characteristics and the study of cigarette quality and style. The analytical methods routinely used in the prior art include solvent extraction, solid phase extraction, and headspace-solid phase microextraction. For the trace aroma components in tobacco leaves and smoke, the sensitivity of the above methods is still insufficient. [0003] Closed-Loop-Stripping-Analysis (CLSA) is a closed-loop system in which a certain volume of gas circulates between sample bottles and enrichment tubes through an air pump and piping system. The component to be tested is continuously extracted and adsorbed in the enrichment tube by the airflow, which has the advantages of high concentration multiple, strong adsorption ...

Claims

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Application Information

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IPC IPC(8): G01N30/08G01N30/88
CPCG01N30/08G01N30/88
Inventor 吴秉宇王亮刘百战费婷周妍安彤
Owner SHANGHAI TOBACCO GRP CO LTD
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