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Method for screening fragrant raw material for cigarette based on thermal cracking - gas chromatograph mass spectrogram multiple techniques

A gas chromatography-mass spectrometry, combined technology, applied in the field of tobacco flavor detection, can solve problems such as lack of uniformity, difficult screening of tobacco flavor raw materials, lack of system, etc., and achieve less sample injection, good reproducibility, information A large amount of effect

Inactive Publication Date: 2008-12-24
ZHENGZHOU TOBACCO RES INST OF CNTC
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AI Technical Summary

Problems solved by technology

[0005] The above studies provide a theoretical reference for the screening of tobacco flavor raw materials, but the overall lack of systematization and uniformity, and there is still a certain distance between the simulation of cigarette combustion behavior and the actual situation of cigarette combustion, so it is difficult to directly apply to the analysis of tobacco flavor materials. Screening of raw materials

Method used

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  • Method for screening fragrant raw material for cigarette based on thermal cracking - gas chromatograph mass spectrogram multiple techniques

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Weigh 0.1 mg of deoxyfructosine (self-made, colorless and odorless white solid powder at room temperature, purity > 99%), put it into the middle section of the cracking tube of the probe of CDS PYROPROBE2000 cracking instrument, fill and fix it with quartz wool, and crack the sample Experiment: The initial temperature of the pyrolysis instrument probe: 100°C; the heating rate: 10°C / millisecond; the final temperature rises to 300, 600, and 900°C respectively, the pyrolysis time is 5s, and the volume percentage of oxygen in the pyrolysis atmosphere is 0% ;

[0017] 2. The GC analysis conditions for separation and detection of pyrolysis products by using GC-MS coupled with a pyrolysis instrument are as follows: inlet temperature: 270°C; carrier gas: He, flow rate 1.0ml / min, chromatographic column HP-5MS ( 60m×0.25mm.×0.25μm), split ratio 10:1; hold for 40min; GC / MS temperature program: initial temperature 70℃, final temperature 270℃, heating rate 2℃ / mi;

[0018] 3. The...

Embodiment 2

[0022] 1. Weigh 1 mg of self-made glucose acetate, put the sample into the middle section of the pyrolysis tube of the pyrolysis instrument probe and fix it with quartz wool; the control conditions during the pyrolysis process of the CDS PYROPROBE2000 pyrolysis instrument are: the initial temperature of the pyrolysis instrument probe : 50°C; heating rate: 20°C / millisecond; the final temperature rises to 400°C and 800°C respectively, the pyrolysis time is 10s, and the volume percentage of oxygen in the pyrolysis atmosphere is 20%;

[0023] 2. The GC analysis conditions for separation and detection of pyrolysis products by GC-MS are as follows: inlet temperature: 250°C; carrier gas: He, flow rate 0.8ml / min, chromatographic column: HP-FFAP column (30m×0.25 mm×0.25μm); split ratio 15:1; hold for 30min; GC / MS temperature program: initial temperature 50°C, final temperature 220°C, heating rate 5°C / min;

[0024] 3. The mass spectrometry conditions for separation and detection of pyro...

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Abstract

The invention provides a screening method for fragrance raw material used for tobacco on the basis of thermal cracking-gas chromatography mass spectrography co-technique. The method of the invention is characterized in that chemical compositions contributed in the cigarette smoke by the fragrance raw material after the fragrance raw material is added into the cigarette is mainly determined by separating and measuring the pyrolsis products of the fragrance raw material in the smoking process of the simulated cigarette; the method of the invention comprises the specific steps as follows: standby fragrance raw material used for the tobacco of suitable quantity is weighed; nitrogen or air with different proportions are pumped into a pyrolyzer so as to change the nitrogen content; different pyrolyzing temperature and pyrolysis time are controlled by electric heating wires so as to combust the fragrance raw material used for the tobacco and simulate the burning process of the tobacco during the smoking process of the cigarette; subsequently, the pyrolsis products are separated and detected by GC-MS; the pyrolyzis products are determined by the remained time and mass spectrometry database query, thus investigating the effects of the adding of the fragrance raw material on the chemical composition of the smoke further. Compared with other screening methods, the method of the invention has the advantages of simple process, quick analysis speed, good repeatability, large information quantity, and unlimited physical states of the samples, etc.

Description

technical field [0001] The invention belongs to the detection technology of flavorings for tobacco, and in particular relates to a method for screening raw materials of flavorings for tobacco based on pyrolysis-gas chromatography mass spectrometry technology. Mainly through the separation and detection of pyrolysis products of flavoring raw materials during the simulated cigarette smoking process, it is determined the chemical components contributed by the flavoring raw materials in cigarette smoke after they are added to cigarettes. Background technique [0002] At present, two methods are generally used in the screening of tobacco aroma raw materials in China, one is sensory evaluation and smoking (Zong Yongli et al. Research on Burley Tobacco Adding Technology. Tobacco Science and Technology 2003, (10): 3; Technical research. Tobacco Science and Technology 2004, (03): 3), requiring smokers to capture the sensory changes brought about by flavoring materials in cigarette sm...

Claims

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Application Information

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IPC IPC(8): G01N1/44G01N30/00
Inventor 宋瑜冰李鹏宗永立李炎强孙世豪
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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