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
5 Cites 6 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, the use of chitosan-cyclodextrin-glutaraldehyde polymers to selectively...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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.

Application Domain

Technology Topic

ChemistryNitrosamine +10

Image

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

Examples

  • Experimental program(3)

Example Embodiment

[0024] Example 1
[0025] Dissolve 1 g of chitosan in 50 mL of acetic acid solution with a concentration of 1%, add 50 mL of methanol, and stir to obtain a chitosan solution; dissolve 6 g of β-cyclodextrin in 100 mL of hydrochloric acid solution with a concentration of 0.5 M, add dropwise 10 mL of glutaraldehyde with a concentration of 25% was stirred at 85 °C for 2 h to obtain a cyclodextrin-glutaraldehyde polymer solution; the cyclodextrin-glutaraldehyde solution was added dropwise to the chitosan solution, Under the condition of 85 ℃, the reaction was stirred for 1 h, the pH value was adjusted to 8 with 1M sodium hydroxide solution, the stirring was continued for 10 min, filtered, the filter residue was washed with water, and dried at 40 ℃ to obtain brown-yellow solid particles , is a chitosan-cyclodextrin-glutaraldehyde polymer. Pass through a 40-mesh sieve, weigh quantitatively, and add it to the filter tip at a level of 9 mg per cigarette to make a test cigarette, which is compared with the control cigarette. The control cigarettes were identical to the test cigarettes except that they did not contain additives, such as cigarette materials, sizes, and filter rods. The filter rod is an acetate filter rod.
[0026] The test cigarettes and the control cigarettes were smoked with the RM200 automatic smoking machine under standard smoking conditions, and the smoke test was collected, and then NNN, NNK, NAT, NAB and other compounds were determined according to the relevant requirements of GB/T 23228-2008. The test data are shown in Table 1 below. From the results in Table 1, it can be seen that the chitosan-cyclodextrin-glutaraldehyde polymer can selectively reduce the main tobacco-specific nitrosamines in cigarette smoke. Compared with the control cigarette, the wet tar of the cigarette TPM did not decrease (instead it increased by 4.77%), the decrease rate for NNK was 8.55%, and several other specific nitrosamines also decreased to varying degrees. The overall taste and smoking taste of the cigarettes and the control cigarettes were basically the same.
[0027] Table 1 The effect of chitosan-cyclodextrin-glutaraldehyde polymer in reducing specific nitrosamines
[0028]

Example Embodiment

[0029] Example 2
[0030]Dissolve 1 g of chitosan in 50 mL of acetic acid solution with a concentration of 1%, add 50 mL of methanol, and stir to obtain a chitosan solution; dissolve 3 g of β-cyclodextrin in 50 mL of hydrochloric acid solution with a concentration of 0.5 M, add dropwise 7mL of glutaraldehyde with a concentration of 25% was stirred at 85°C for 2 hours to obtain a cyclodextrin-glutaraldehyde polymer solution; the cyclodextrin-glutaraldehyde solution was added dropwise to the chitosan solution, Under the condition of 85℃, the reaction was stirred for 1h, the pH value was adjusted to 8 with 1M sodium hydroxide solution, the stirring was continued for 10min, filtered, the filter residue was washed with ethanol, and dried at 40℃ to obtain a brownish yellow solid The particles are chitosan-cyclodextrin-glutaraldehyde polymers. Pass through a 40-mesh sieve, weigh quantitatively, and add 10 mg per cigarette to the filter tip to make a test cigarette, which is compared with a control cigarette. The control cigarettes were identical to the test cigarettes except that they did not contain additives, such as cigarette materials, sizes, and filter rods. The filter rod is an acetate filter rod.
[0031] The test cigarettes and the control cigarettes were smoked with the RM200 automatic smoking machine under standard smoking conditions, and the smoke test was collected, and then NNN, NNK, NAT, NAB and other compounds were determined according to the relevant requirements of GB/T 23228-2008. The test data are shown in Table 2 below. From the results in Table 2, it can be seen that the chitosan-cyclodextrin-glutaraldehyde polymer can selectively reduce the main tobacco-specific nitrosamines in cigarette smoke. Compared with the control cigarette, the wet tar of the cigarette The range of change is only 0.37%, the reduction range of NNK is 3.79%, and several other specific nitrosamines also have different degrees of reduction. The overall taste and taste are basically the same.
[0032] Table 2 The effect of chitosan-cyclodextrin-glutaraldehyde polymer in reducing specific nitrosamines
[0033]

Example Embodiment

[0034] Example 3
[0035] The chitosan-cyclodextrin-glutaraldehyde polymer prepared in Example 1 was added to the filter tip at a level of 8 mg/cigarette to make a test cigarette, which was compared with a control cigarette. The control cigarettes were identical to the test cigarettes except that they did not contain additives, such as cigarette materials, sizes, and filter rods. The filter rod is an acetate filter rod.
[0036] According to the method of the above example, the results show that the wet tar in cigarette smoke is reduced by 4.43%, while the reduction rates 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 that of tar, which achieves the purpose of selective harm reduction.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Lockable box

InactiveUS20190239673A1Easy to addProblem can be addressedKitchen equipmentDomestic articlesPorchEngineering
Owner:SILVA MICHAEL

Classification and recommendation of technical efficacy words

  • Easy to add
  • Easy to operate

Information distribution system

InactiveUS6148301AReducing and shortcoming and disadvantageEasy to addData processing applicationsDatabase distribution/replicationDistribution systemCentralized database
Owner:FIRST DATA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products