Method for adjusting pH of cigarette smoke based on addition of unvolatile acid

A cigarette smoke, non-volatile technology, applied in the fields of tobacco, cigarette manufacturing, application, etc., can solve the problem of less relevant reports, and achieve the effects of improving the quality of smoking, improving coordination, and reducing irritation.

Active Publication Date: 2019-05-31
CHINA TOBACCO GUANGXI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the research on organic acids and flue gas pH at home and abroad is limited to their respective measurement methods, and there are few reports on the correlation between the two and the method of regulating flue gas pH by adjusting the amount of non-volatile acids

Method used

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  • Method for adjusting pH of cigarette smoke based on addition of unvolatile acid
  • Method for adjusting pH of cigarette smoke based on addition of unvolatile acid
  • Method for adjusting pH of cigarette smoke based on addition of unvolatile acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, a method for regulating the pH of cigarette smoke based on the addition of non-volatile acid, the specific method includes the following steps:

[0026] (1) Determination of non-volatile acid content in multiple brands of cigarette samples: strip the cigarettes and take out the shredded tobacco, grind it into 40 mesh powder, add 1g of tobacco powder in a round bottom flask, add 40mL of 10% sulfuric acid solution, and then add 1mL of 6 mg / mL adipic acid solution, heated and refluxed in a water bath at 80°C for 2 hours, after room temperature, take 10 mL of the refluxed liquid in a separatory funnel, add 20 mL of saturated saline solution and mix well, extract 3 times with 10 mL of dichloromethane, and combine the extracts into In the Erlenmeyer flask, add 2g of anhydrous sodium sulfate to dry overnight, take 1mL of the extract and pass it through a 0.45μm filter membrane for gas chromatography analysis; the analysis conditions are: chromatographic colu...

Embodiment 2

[0042] Analyze according to the correlation analysis results in Example 1 and the measurement method of smoke pH. Taking cigarette sample 1 as an example, after adding 1% malic acid, the pH value of the particulate phase is 0.427 lower than that before the addition, and the gas phase The pH value decreased by 0.512, and the pH value of the whole flue gas decreased by 0.410 compared with that before the addition.

[0043] Table 6 Effect of adding 1% malic acid to cigarette sample 1 on the pH value of cigarette smoke

[0044]

[0045]

[0046] Note: "Change" is equal to the measured value after addition minus the measured value of the control sample, and the sign "-" means decrease.

Embodiment 3

[0048] Analyze according to the correlation analysis results in Example 1 and the measurement method of smoke pH. Taking cigarette sample 1 as an example, after adding 2% malic acid, the pH value of the particulate phase is 0.742 lower than that before the addition, and the gas phase The pH value decreased by 0.544 and the pH value of the whole flue gas decreased by 0.657 compared with that before the addition.

[0049] Table 7 Effect of adding 2% malic acid on the pH value of cigarette smoke in cigarette sample 1

[0050]

[0051] Note: "Change" is equal to the measured value after addition minus the measured value of the control sample, and the sign "-" means decrease.

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Abstract

The invention discloses a method for adjusting pH of cigarette smoke based on addition of unvolatile acid. The method comprises the following steps that 1) different cigarette samples are selected, and content of unvolatile acid in the cigarette samples is detected; 2) pH values of smoke of each cigarette sample are detected and comprise the pH value of particulate matters in mainstream smoke, thepH value of gas-phase matters and the pH value of the whole smoke; 3) correlation analysis is conducted on the unvolatile acid in the cigarette samples and the pH values of the smoke; 4) according tothe correlation analysis result, by adding organic acid, the pH of the smoke of the cigarette samples is further adjusted. The method discovers a correlation law between the unvolatile acid in cut tobacco and the pH of the smoke, the pH of the smoke can be adjusted by adding the organic acid, and the method is suitable for cigarettes with smoke containing larger nitrogen-containing compounds andhigher alkalinity, can neutralize the smoke, reduce irritation, improve acid-base coordination of the smoke, and improve the smoking quality of cigarettes.

Description

technical field [0001] The invention belongs to the technical field of cigarettes, and in particular relates to a method for regulating the pH of cigarette smoke based on external non-volatile acid. Background technique [0002] The pH value of smoke is one of the comprehensive indicators reflecting the overall quality of cigarettes. It can comprehensively reflect the chemical composition and chemical balance in cigarette formula. It is also an important parameter of cigarette smoking quality. The best effect will be achieved, otherwise, there will be problems with the taste of cigarettes. Therefore, more and more people pay attention to the research on the pH regulation technology of cigarette mainstream smoke. [0003] Non-volatile acid is an important chemical component in tobacco, with a wide variety, and the total content accounts for about 7% of the weight of tobacco. Most of the organic acids in tobacco are combined with alkali metals to form salts, some are combine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24C5/34
Inventor 杨龙彦李志华张峻松农李政宁振兴胡志忠徐石磊廖超执陈义昌宋凌勇黄善松胡超班强务文涛施怡
Owner CHINA TOBACCO GUANGXI IND
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