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Method for selectively reducing specific nitrosamines in cigarette smoke

A cigarette smoke and selectivity technology, which is applied in the fields of tobacco, smoke oil filter elements, food science, etc., can solve the problem of selective reduction of N-nitrosamines, etc., and achieve the effect of convenient operation and simple addition method

Active Publication Date: 2013-07-10
CHINA TOBACCO JIANGSU INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of chitosan-cyclodextrin-glutaraldehyde polymers to selectively reduce tobacco-specific N-nitrosamines in cigarette smoke has not been reported

Method used

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  • Method for selectively reducing specific nitrosamines in cigarette smoke
  • Method for selectively reducing specific nitrosamines in cigarette smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dissolve 1g of chitosan in 50mL of 1% acetic acid solution, add 50mL of methanol, and stir to obtain a chitosan solution; dissolve 6g of β-cyclodextrin in 100mL of 0.5M hydrochloric acid solution, add dropwise 10mL of glutaraldehyde with a concentration of 25% was stirred and reacted for 2 hours at 85°C to obtain a cyclodextrin-glutaraldehyde polymer solution; the cyclodextrin-glutaraldehyde solution was added dropwise to the chitosan solution, Stir the reaction for 1 hour at 85°C, adjust the pH value to 8 with 1M sodium hydroxide solution, continue stirring for 10 minutes, filter, wash the filter residue with water, and dry at 40°C to obtain brown-yellow solid particles , is a chitosan-cyclodextrin-glutaraldehyde polymer. Pass through a 40-mesh sieve, weigh it quantitatively, add it to the filter tip at a level of 9mg / cigarette, make a test cigarette, and do a comparative test with the control cigarette. Except that the control cigarettes do not contain additives, oth...

Embodiment 2

[0030]Dissolve 1g of chitosan in 50mL of 1% acetic acid solution, add 50mL of methanol, and stir to obtain a chitosan solution; dissolve 3g of β-cyclodextrin in 50mL of 0.5M hydrochloric acid solution, add dropwise 7 mL of glutaraldehyde with a concentration of 25% was stirred and reacted for 2 hours at 85°C to obtain a cyclodextrin-glutaraldehyde polymer solution; the cyclodextrin-glutaraldehyde solution was added dropwise to the chitosan solution, Stir the reaction at 85°C for 1 hour, adjust the pH value to 8 with 1M sodium hydroxide solution, continue stirring for 10 minutes, filter, wash the filter residue with ethanol, and dry at 40°C to obtain a brown-yellow solid The particles are chitosan-cyclodextrin-glutaraldehyde polymers. Pass through a 40-mesh sieve, weigh it quantitatively, add it to the filter tip at a level of 10 mg / cigarette, make a test cigarette, and do a comparative test with the control cigarette. Except that the control cigarettes do not contain additive...

Embodiment 3

[0035] The chitosan-cyclodextrin-glutaraldehyde polymer prepared in Example 1 was added to the filter tip at a level of 8mg / cigarette to make a test cigarette, which was compared with the control cigarette. Except that the control cigarettes do not contain additives, other cigarette materials such as auxiliary materials, sizes, filter rods, etc. are exactly the same as the test cigarettes. The filter stick is a cellulose acetate filter stick.

[0036] According to the method of the above examples, the results show that the wet tar in cigarette smoke is reduced by 4.43%, while the reductions of NNN, NNK, NAT and NAB are 16.26%, 34.54%, 9.89% and 8.21%, respectively. The reduction range of nitramine is still greater than the reduction range of tar, reaching the purpose of selective harm reduction.

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Abstract

The invention discloses a method for selectively reducing specific nitrosamines in cigarette smoke. The method is used for selectively reducing the specific nitrosamines in the cigarette smoke by the aid of chitosan-cyclodextrin-glutaraldehyde polymers. The chitosan-cyclodextrin-glutaraldehyde polymers are used as additives of cigarette filters, and are utilized when the cigarette filters are manufactured, so that the specific nitrosamines in the cigarette smoke are selectively reduced when a smoker smokes cigarette. The method has the advantages that releasing amounts of specific nitrosamines substances, such as NNN (N-nitroso-nornicotine), NNK [4-(N-methyl-N-nitrosamine)-1-(3-pyridyl)-butanone], NAT (N-nitroso-anatabine) and NAB (N-nitroso-anabasine) which are contained in tobacco, in the cigarette smoke can be obviously reduced; and a chitosan-cyclodextrin-glutaraldehyde polymer adding mode is simple, and the chitosan-cyclodextrin-glutaraldehyde polymers can be added during manufacture for filter sticks and are convenient to operate.

Description

technical field [0001] The invention belongs to the field of cigarette manufacturing, and relates to a method for reducing specific nitrosamines in cigarette smoke, in particular to a method of using chitosan-cyclodextrin-glutaraldehyde polymer as a cigarette filter tip / filter stick additive, with high efficiency and selectivity Methods for reducing specific nitrosamines in cigarette smoke. Background technique [0002] Tobacco-specific nitrosamines (TSNAs) are a class of nitrosamines with the most abundant N-nitrosamine content in tobacco, which only exist in tobacco, tobacco products and cigarette smoke. hazards are of great significance. The International Agency for Research on Cancer (IARC)'s toxicity evaluation of the harmful ingredients in the Canadian government's list shows that the pure chemical ingredients of NNK and NNN are suspected human carcinogens. In order to reduce the harm that tobacco-specific nitrosamines may bring to the health of smokers and passive s...

Claims

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Application Information

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IPC IPC(8): A24D3/14C08B37/16C08B37/08C08G81/00
Inventor 李朝建廖惠云庄亚东张映熊晓敏刘献军王珂清张媛
Owner CHINA TOBACCO JIANGSU INDAL
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