Method for measuring volatile and semi-volatile neutral scent components in tobacco and sample collection device
A technology of semi-volatile and aroma components, which is applied in the field of determination of tobacco volatility, semi-volatile neutral aroma components and sample collection devices. It can solve the problems of essential oil decomposition, poor repeatability of analysis results, and interference with quantitative analysis of aroma components. Achieve the effect of eliminating interference and high precision analysis of semi-volatile aroma components
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Embodiment 1
[0038] Take 20g of cigarette shredded tobacco sample and place it in the sieved flask 3 of the sample distillation device 1, add 1000ml of water into the water chamber, and use the electric heating mantle as the heating device; add 40ml of dichloromethane and 1ml of Naphthalene, using a water bath as the heating device; start the heating device, saturated water vapor enters the mixing extraction chamber 9 through the tobacco sample in the flask 3 with a mesh, mixes with methylene chloride vapor, rises, meets the condensation pipe 10 to condense, and condenses The liquid enters the U-shaped layered pipe 7; after layering, the water phase flows back to the water chamber from the condensed water return pipe 5, and the organic phase flows back to the Erlenmeyer flask from the solvent overflow pipe 11; in this way, condensing and extracting is circulated for 1.5h to obtain water- Organic solvent mixture—sample; put the sample in a separatory funnel and add 3% sulfuric acid to adjust...
Embodiment 2
[0040] Get 20g of flue-cured tobacco sheet samples and place them in the flask 3 with a sieve hole in the double-spherical flask, add 1000ml of water to the lower ball of the double-spherical flask, use the water bath as the heating device; add 40ml of trichloro The phenethyl acetate of methane and 1ml uses the electric heating mantle as the heating device; the heating device is started, and the saturated water vapor enters the mixed extraction chamber 9 through the tobacco sample in the flask 3 with a screen hole, mixes with the chloroform vapor, rises, Condensation occurs in the condenser pipe 10, and the condensate enters the U-shaped stratified pipe 7; after stratification, the water phase flows back from the condensed water return pipe 5 to the lower ball of the double-ball flask, and the organic phase flows back from the solvent overflow pipe 11 to the distillation chamber. Bottle; condensing and extracting in this way for 2.5 hours to obtain a water-organic solvent mixtu...
Embodiment 3
[0042] Get 20g burley tobacco slice samples and place them in the flask 3 with sieve holes in the double-spherical flask, add 1000ml of water in the lower ball of the double-spherical flask, and use the electric heating mantle as the heating device; Add 40ml of dichloromethane and 1ml of phenylethyl acetate, and use the electric heating mantle as the heating device; start the heating device, and the saturated water vapor enters the mixing extraction chamber 9 through the tobacco sample in the flask 3 with a mesh, and is mixed with the dichloromethane vapor Mixing, rising, condensing when encountering the condenser tube 10, the condensate enters the U-shaped stratified tube 7; after stratification, the water phase flows back from the condensed water return tube 5 to the lower ball of the double-ball flask, and the organic phase flows from the solvent overflow tube 11 Reflux to the round-bottomed flask; condense and extract in this way for 2 hours to obtain a water-organic solven...
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