Method for improving quality of tobacco leaves by adding enzyme preparation, glucose and citric acid

Abstract

The invention provides a method for improving quality of tobacco leaves by adding enzyme preparation, glucose and citric acid and belongs to the field of tobacco processing. The method includes: spraying, by weight of that of treated tobacco leaves, 0.05%-0.1% of xylanase solution (pH=8.0) onto surfaces of the tobacco leaves prior to placing the tobacco leaves at the temperature ranging from 55 DEG C to 60 DEG C and the humidity of 50-60% in an enclosed environment for 4-10 hours; then spraying, by weight of that of the treated tobacco leaves, 0.1%-0.4% of acid protease solution (pH=3.5) onto the surfaces of the tobacco leaves and subjecting the tobacco leaves to stored-leaves enzymolysis for 3-6 hours at the temperature ranging from 20 DEG C to 30 DEG C and the humidity of 50-60%; adding, by weight of that of the treated tobacco leaves, 2.0%-4.0% of the glucose and 0.5%-1.0% of the citric acid for leaves storage for 5-8 hours in an environment at the temperature ranging from 20 DEG C to 30 DEG C and the humidity of 50-60%, drying the tobacco leaves for 3-10 minutes at the temperature ranging from 110 DEG C to 150 DEG C, and keeping flowing of air and turning of the tobacco leaves to further remove offensive odor and stimulus in the low-grade raw tobacco leaves; placing the well-treated tobacco leaves in an environment of a constant temperature and humidity chamber 22 DEG C in temperature and 60% in humidity for balancing for more than 48 hours till moisture content is equilibrium to 12%, and shredding prior to packing the tobacco leaves. By the method, tobacco smoke strength, the stimulus and the offensive odor can be lowered, pureness and mildness can be enhanced, and aroma can be harmonized.

Description

technical field [0001] The invention relates to a method for improving the quality of tobacco leaves by adding enzyme preparations, glucose and citric acid combined with high-temperature treatment, which belongs to the field of tobacco leaf processing and the field of biological enzyme preparations. technical background [0002] The reducing sugar in carbohydrates in tobacco is one of the main chemical components that affect the taste of tobacco. If the sugar content is high within a certain range, the quality of tobacco leaves is good, but if the sugar content is too high or too low, it is not good for the quality of tobacco leaves; nitrogen content The pyrolysis products of compounds (expressed as total nitrogen content) when cigarettes are smoked are generally alkaline, and often have a strong irritating and pungent burnt bitter taste; an appropriate amount of nicotine can meet the physiological needs of smokers, but the content is too high , the smoke is powerful and inc...

AI Technical Summary

Problems solved by technology

Through the sensory smoking of Shangju 2 (B2F) tobacco leaf raw material in Shaoyang, Hunan Province, it is found that there are mainly the following deficiencies: high irritation, strong strength, high smoke concentration, medium aroma, strong miscellaneous gas, and poor aftertaste

[0004] In Chinese patent application 87101362, low-grade tobacco leaves were treated with complex enzymes fermented by Trichoderma konshii, which can improve the tobacco leaves by 0.5-1 grade, but the invention is to place the tobacco leaves at 60%-70% relative humidity, 30°C Enzymolysis at 50°C for 22-26 hours, this method takes too long, the original aroma style of tobacco leaves cannot be guaranteed, and bacteria are easy to breed

In Chinese patent application 03114578.7, a compound enzyme for improving the quality of tobacco leaves and its preparation technology are disclosed. 1. Protein is degraded into glucose and amino acids, and transformed to increase the aroma of tobacco leaves, but the compound enzyme of this invention is complicated to make, and the single enzymatic treatment solution changes the original aroma style of tobacco leaves, so no satisfactory effect can be obtained

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