Method for reducing content of typical nitrosamine of tobacco leaves

A technology of nitrosamines and tobacco leaves, applied in the direction of tobacco, tobacco treatment, application, etc., to reduce the risk of cancer caused by smokers and improve the safety of smoking

Inactive Publication Date: 2011-06-29
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] At present, the methods to reduce the content of specific nitrosamines in tobacco leaves are concentrated in the process of tobacco planting and conditioning, and there is no method applied in the industrial production process

Method used

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  • Method for reducing content of typical nitrosamine of tobacco leaves

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 100 grams of tobacco leaves, put them into a 1L extraction kettle, and flush them with supercritical CO 2 The fluid is pressurized and circulated. During supercritical extraction, set the pressure of the extraction tank to 10MPa, the temperature to 40°C, absolute ethanol as the entrainer, the dosage is 50 grams, the pressure of the separation tank to 4-6MPa, the temperature to 40°C, and the extraction time to 0.5 hours , The reduction of nitrosamines was 62%.

Embodiment 2

[0034] Weigh 100 grams of tobacco leaves, put them into a 1L extraction kettle, and flush them with supercritical CO 2 The fluid is pressurized and circulated. During supercritical extraction, the pressure of the extraction tank is set at 15MPa, the temperature is 45°C, the 70% ethanol aqueous solution is used as an entrainer, and the dosage is 100 grams. The pressure of the separation tank is 4-6MPa, the temperature is 40°C, and the extraction time is 45 Minutes, the reduction of nitrosamines was 68%.

Embodiment 3

[0036] Weigh 100 grams of tobacco leaves, put them into a 1L extraction kettle, and flush them with supercritical CO 2 The fluid is pressurized and circulated. During supercritical extraction, the pressure of the extraction tank is set at 15MPa, the temperature is 45°C, 60% acetone aqueous solution is used as an entrainer, and the dosage is 150 grams. The pressure of the separation tank is 4-6MPa, the temperature is 40°C, and the extraction time is 1 hours, the reduction of nitrosamines was 74%.

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Abstract

The invention discloses a method for reducing content of typical nitrosamine of tobacco leaves, comprising the following steps of: filling the tobacco leaves into a supercritical extraction kettle, regulating the extraction kettle, controlling temperature of each separation kettle to be 40-60 DEG C, opening a carbon dioxide steel cylinder, and pressurizing the system through a high-pressure pump; simultaneously, opening an entrainer pump to pump the entrainer, and mixing the entrainer and the carbon dioxide into mixed fluid, wherein the pump is alcohol, acetone or aqueous solution thereof; opening a flow regulating valve after the pressure of the extraction kettle comes up to 10-30 MPa, and regulating rotation frequency of a high-pressure plunger pump to perform pressurized circle extraction. The method provided by the invention has the following benefits that: the content of the typical nitrosamine of the tobacco leaves is reduced by more than 60% after the extraction process, so that risk of cancer to smokers is reduced, and smoking safety of cigarette products is improved; after being smoked and evaluated by experts, the processed tobacco leaves still can keep original fragrance and smoking taste well, original physical properties of the tobacco leaves are retained, and requirements of production and processing of the tobacco leaves are satisfied.

Description

technical field [0001] The invention relates to a method for reducing the content of specific nitrosamines in tobacco leaves, in particular to a method for reducing the content of specific nitrosamines in tobacco leaves by supercritical extraction. Background technique [0002] Human smoking has a history of nearly a thousand years, and there are nearly 1.3 billion smoking population in the world so far. Smoking and health problems have increasingly attracted people's attention. As early as the early 1950s, the British Royal Society of Medicine publicly proposed that smoking was harmful to health. At the end of the 1950s, the U.S. Department of Health and the British Royal Society of Medicine both issued announcements that excessive smoking was one of the causes of lung cancer. Into the 1990s, the voice of banning smoking became louder and louder, and the development of the world tobacco industry has reached a critical period of survival. In order to survive and develop th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B15/28
Inventor 毛多斌杨靖程传玲李瑞丽刘春奎姚二民
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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