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Method for improving quality of tobacco leaf

A technology for tobacco leaves and quality, which is applied in the field of enzyme activity regulators to improve their quality, can solve the problems of not mentioning the action time of additives, the effect of enzyme preparations is reduced, and it is difficult to add additives, and achieves good inhibition of polyphenol oxidase, reduced The effect of browning in color and easy application method

Inactive Publication Date: 2011-11-16
CHINA TOBACCO CHUANYU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching relevant patents, it is found that 1. Chinese patent document CN1723811 (200510010910.9) discloses a flue-cured tobacco additive and its preparation method and application. The requirements for moisture conditions are different, so it is difficult to guarantee the best use of this additive, and in the patent, the action time of the additive is not mentioned, which is precisely the key point of using enzyme preparation as an additive; ② Chinese patent document CN1778210 (200410087655.3) discloses a method for improving the quality of tobacco. This patent fundamentally changes the composition and content of sugar in tobacco by adding a compound enzyme preparation to the tobacco leaves before alcoholization, and also affects the effect of the enzyme preparation. The temperature, time and inactivation conditions are explained, but since the object of action is dry tobacco leaves before aging, the water activity is low, and the effect of the enzyme preparation is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Enzyme activity regulators are: the concentration of PVP is 1mmol / L, and the concentration of citric acid is 0.5mmol / L.

[0021] PVP and citric acid were mixed, dissolved, and filtered to obtain a clear liquid with a concentration of 1 mmol / L and 0.5 mmol / L respectively, and the pH value was the pH value of the solution itself. Choose a day when the weather is fine and there is no strong wind or rain within 14 days before harvesting. Spray the front and back of the middle leaves of flue-cured tobacco with uniform growth in the field. Seven days later, spray the same enzyme activity regulator again on the tobacco leaves that were first applied with the enzyme activity regulator. agent, harvested after 7 days. If there is a strong wind and heavy rain after applying the enzyme activity regulator, apply it immediately. The treatment sample was treated after initial roasting, and the control sample was the middle leaf with uniform growth without spraying.

[0022] 1. Obser...

Embodiment 2

[0034] Enzyme activity regulators are: the concentration of PVP is 1mmol / L, the concentration of NaDiCa is 1mmol / L, and the concentration of citric acid is 0.5mmol / L.

[0035] PVP, NaDiCa and citric acid were mixed, dissolved and filtered to obtain a clear liquid with concentrations of 1mmol / L, 1mmol / L and 0.5mmol / L respectively, and the pH value was the pH value of the solution itself. The application method is the same as in Example 1.

Embodiment 3

[0037] Enzyme activity regulators are: PVP concentration 0.8mmol / L, NaDiCa concentration 0.8mmol / L, EDTA concentration 0.8mmol / L, citric acid concentration 0.5mmol / L, sodium bisulfite concentration 0.5mmol / L.

[0038] Mix, dissolve, and filter PVP, NaDiCa, EDTA, citric acid, and sodium bisulfite to obtain a clear liquid with concentrations of 0.8mmol / L, 0.8mmol / L, 0.8mmol / L, 0.5mmol / L, and 0.5mmol / L, respectively. L, pH value is the pH value of the solution itself. The application method is the same as in Example 1.

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Abstract

The invention relates to a method for improving quality of tobacco leaves, and to be more accurately, to a method of applying an enzyme activity conditioning agent on pre-harvest tobacco leaves so as to improve quality of the tobacco leaves, belonging to the field of tobacco production. Specifically speaking, the method comprises the following steps: evenly mixing, dissolving and filtering one or more selected from the group consisting of polyvinylpyrrolidone (PVP), sodium diethyl dithiocarbamic acid (NaDiCa), ethylendiaminotetraacetic acid (EDTA), citric acid and sodium bisulfite to obtain an enzyme activity conditioning agent; applying the enzyme activity conditioning agent on filed tobacco leaves two times (with an interval being 7 days) by the method of spraying the agent on the front and back of the tobacco leaves before the tobacco leaves are harvested so as to obtain tobacco leaves with improved quality after the tobacco leaves are harvested. According to the invention, the color grade of the tobacco leaves is substantially improved, and exterior and aesthetic quality of the tobacco leaves and compatibility of chemical components in the tobacco leaves are enhanced; the cost of the enzyme activity conditioning agent provided in the invention is low, application of the agent in fields is simple, and the effect of the agent is stable.

Description

technical field [0001] The invention relates to the field of tobacco production, in particular to a method for applying an enzyme activity regulator to flue-cured tobacco leaves before harvesting to improve their quality. Background technique [0002] The chemical composition and enzyme activity state of tobacco leaf plants before harvest directly affect the appearance and internal quality of tobacco leaves after initial curing and re-curing, and play an important role in the aging effect of tobacco leaves. The content of polyphenolic compounds in tobacco leaves is closely related to the color grade of tobacco leaves. As the content of polyphenolic compounds in the same part of tobacco leaves decreases, the color of tobacco leaves deepens, that is, lemon yellow>orange>red brown; polyphenolic compounds and their decomposition The product is related to the aroma of tobacco. It is a substance that produces the aroma of smoke. Together with organic acids, it forms the acid...

Claims

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Application Information

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IPC IPC(8): A01N59/02A01N47/26A01N43/36A01N37/44A01N37/36A01P21/00
Inventor 汪长国戴亚寇明钰李宁吴艳刘林赵敏
Owner CHINA TOBACCO CHUANYU IND
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