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Usage of a plant extract for reducing tobacco nitrosamine content

A technology for plant extracts and nitrosamines, which is applied in the directions of tobacco, tobacco processing, application, etc., can solve the problems of not stable application effect, insufficient material sources, complicated extraction process, etc., and achieves low application cost, wide source and effect. significant effect

Active Publication Date: 2017-07-07
HUBEI TOBACCO SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of technology combines the current pollution-free trend, but the application of some of the above-mentioned plant materials still has shortcomings such as insufficient source of materials, complicated extraction process, high application cost, and unstable application effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the tobacco field under the conventional planting mode of Burley tobacco, the leaves of the whole plant were uniformly sprayed with 12.5% ​​purslane extract of the plant extract (the preparation method was to freshly harvested Purslane and fresh water are mixed according to the mass ratio of 1:1 to squeeze the juice, and the filtered fresh purslane juice stock solution with a concentration of 50% is filtered and stored at a low temperature below -4°C. % purslane initial extract), with no plant extract sprayed as a control; after routine harvesting and drying, samples were taken for testing. The result was that the TSNA contents of the upper and middle tobacco leaves sprayed with plant extracts were 86.33 μg / g and 82.39 μg / g, respectively, which were lower than the TSNA contents of 123.47 μg / g and 149.62 μg / g in the upper and middle tobacco leaves of the control 30.08%, 44.93%, and the NNK content of the upper tobacco leaves and middle tobacco leaves sprayed with plan...

Embodiment 2

[0018] In the tobacco field under the conventional planting mode of Maryland tobacco, the leaves of the whole plant were uniformly sprayed with 12.5% ​​purslane extract of the plant extract (the preparation method was to freshly harvest horseshoe oleracea). Purslane and fresh water are mixed according to the mass ratio of 1:1, and the juice is filtered to obtain the filtered purslane fresh juice stock solution with a concentration of 50% and stored at a low temperature below -4°C. When using, add water 3 times the stock solution to obtain 12.5% Purslane initial extract), with no plant extract sprayed as the control; after routine harvesting and drying, samples were taken for testing. The result was that the TSNA contents of the upper and middle tobacco leaves sprayed with plant extracts were 0.25 μg / g and 0.28 μg / g, respectively, which were lower than the 1.27 μg / g and 1.62 μg / g TSNA contents of the upper and middle tobacco leaves of the control 80.28%, 82.91%, and the upper t...

Embodiment 3

[0020] In the tobacco field under the conventional planting mode of flue-cured tobacco, 7 days before the lower leaves start to be roasted, the whole plant leaf surface is evenly sprayed with plant extract 25% purslane primary extract (the preparation method is to freshly harvested purslane Amaranthus and fresh water are mixed according to the mass ratio of 1:1, and the juice is filtered to obtain the filtered 50% purslane fresh juice stock solution and stored at a low temperature below -4°C. Purslane initial extract), with no plant extract sprayed as the control; after routine harvesting and preparation, samples were taken for testing. As a result, the TSNA contents of the upper and middle tobacco leaves sprayed with plant extracts were 487.78ng / g and 173.34ng / g respectively, which were lower than the TSNA contents of 638.82ng / g and 345.11ng / g in the upper and middle tobacco leaves of the control. 23.64% and 49.77%, and the NNK content of the upper tobacco leaf and the middle t...

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Abstract

The invention provides preparation and application methods of a plant extract for lowering tobacco-specific nitrosamine content. The methods include putting fresh picked purslane and clear water in a squeezer according to the mass ratio of 1:1 for smashing and squeeze to obtain filtrate, namely plant extract stock solution 50% in concentration, spraying the stock solution on leaves in field before harvesting and conditioning of tobacco, and performing conventional conditioning after agent absorption. By application of the plant extract, TSNA content (particularly NNK content) in tobacco and smoke can be lowered significantly, quality of tobacco is improved all sidedly, the objective of lowering the TSNA content in the tobacco planting link is achieved, and the objectives of improving cigarette safety and protecting consumer's interests first are achieve; the plant extract is low-concentration water solution, is less in consumption, low in cost and convenient to apply and can be absorbed by plants and degraded in nature, thereby being harmless to both human and environment.

Description

technical field [0001] The invention relates to the preparation and usage of a plant extract for reducing the content of tobacco-specific nitrosamines, and belongs to the technical fields of tobacco planting technology and tobacco leaf redrying. Background technique [0002] Tobacco-specific nitrosamines (TSNA) are tobacco-specific compounds produced by the nitrosation reaction of tobacco alkaloids and nitrites. They are commonly found in various types of tobacco and tobacco products. The identified TSNAs are mainly There are 4 kinds: N-nitroso nornicotine (NNN), 4-(N-methyl-nitrosamine)-1-(3-pyridyl)-1-butanone (NNK), N-nitroso N-nitroso aneunicotine (NAT). Animal experiments have shown that TSNA has certain carcinogenicity and mutagenicity, and there is a certain correlation with the occurrence of tumors in the lung, oral cavity, esophagus, pancreas, liver and other parts; among these four TSNAs, NNK is particularly carcinogenic . Therefore, reducing the content of TSNA...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B15/24
CPCA24B15/245
Inventor 杨春雷杨锦鹏周骏余君马雁军白若石秦文章樊凯孝邓灿东魏永乐樊友伦
Owner HUBEI TOBACCO SCI RES INST
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