Method for judging tobacco leaf yellowing degree and baking progress in tobacco backing and yellowing stage

A technology for tobacco leaves at the yellowing stage, which is applied in the field of judging the degree of yellowing of tobacco leaves during the yellowing stage of flue-cured tobacco curing and the curing process, and can solve the problems of inconsistent baking judgment standards, low relative chlorophyll content, and high carotenoid content. To achieve the effects of easy operation and handling, improvement of tobacco leaf quality, gloss and oil content

Inactive Publication Date: 2014-01-08
GUIZHOU TOBACCO SCI RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Single subjective judgment of people is likely to cause inconsistency in the curing judgment standard and reduce the quality of tobacco leaf curing
At present, there is a domestic technical solution for detecting the degree of yellowing of tobacco leaves through the SPAD value (Chinese Patent No. 201310196080.8; the name is a method for detecting the degree of yellowing of tobacco leaves during the curing process of flue-cured tobacco), which is mainly judged by the reduction of the relative content of chlorophyll The degree of yellowing of tobacco leaves, but the relative content of chlorophyll is low in the middle and late stages of yellowing, while the content of carotenoids is relatively high. threshold problem

Method used

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  • Method for judging tobacco leaf yellowing degree and baking progress in tobacco backing and yellowing stage
  • Method for judging tobacco leaf yellowing degree and baking progress in tobacco backing and yellowing stage
  • Method for judging tobacco leaf yellowing degree and baking progress in tobacco backing and yellowing stage

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Experimental program
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Effect test

Embodiment 1

[0030]From 2011 to 2012, a flue-cured tobacco curing experiment was carried out at the curing room base of Fuquan City, Guizhou Provincial Tobacco Science Research Institute. Take 10 samples and use the colorimeter for rapid detection. Each leaf should choose to measure 6 points, that is, the middle position of the leaf tip, the middle part and the leaf base of the half leaf on both sides of the main vein, avoiding the main branch vein of the leaf, and then take the average value of the measurement. The average values ​​of L*a*b*C*h* measured on 10 tobacco leaves are 65.2, 0.2, 53.6, 53.8, and 90.7. Three of the data in this group are in the range of 6 to 70% yellow value, and two values ​​are close to , then the degree of yellowing is defined as 6-70% yellow; the average value of the pigment content and its ratio is 0.13, 0.11, 1.10 measured by taking 3 pieces, 2 of which are in the range of 6-70% yellow, and 1 value is close to , the degree of yellowing is defined as 6 to 7...

Embodiment 2

[0032] In 2013, a flue-cured tobacco (K326, Bina No. 1, Gui No. 2, Nanjiang No. 3, Jiucaiping No. 2 and other varieties) tobacco leaf curing test was carried out at the Longgang curing room base of Guizhou Tobacco Science Research Institute. During the curing process, 10 tobacco leaves were sampled during the yellowing stage, and the color difference meter was used to quickly detect the average values ​​of L*a*b*C*h* of 10 tobacco leaves were 59.5, -4.9, 49.6, 50.1, 96.0, all If the values ​​are all within the range of 2 to 3 percent yellow, then the degree of yellowing is defined as 2 to 3 percent yellow; at the same time, the average values ​​of chlorophyll, carotenoid content and their ratio are 0.46, 0.20, and 2.33, and all values ​​are in the If it is within the range of 2-30% yellowing area, the yellowing degree of tobacco leaves is defined as 2-30% yellowing; the two judgments are basically consistent. According to the method of curing, the top quality of the tobacco le...

Embodiment 3

[0034] In 2013, a tobacco leaf curing test in a flue-cured tobacco oven was carried out at the Kaiyang Longgang curing room base of Guizhou Tobacco Science Research Institute. Sampling was taken during the yellowing stage of the tobacco leaves during the curing process, and the color difference meter was used for rapid detection, and the tobacco leaf pigment content and its ratio were detected. Baking operation was carried out according to the measurement data results. As a result, the quality of tobacco leaves was increased by 3.28%, the appearance quality of tobacco leaves was improved, and the overall quality was significantly improved.

[0035] Experts have appraised this flue-cured tobacco curing technology, and the measured data results are consistent with the degree of yellowing of flue-cured tobacco leaves.

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Abstract

The invention discloses a method for detecting and judging the tobacco leaf yellowing degree and the baking progress in a tobacco baking and yellowing stage. The method comprises the following steps of placing representative tobacco leaves into a sampling window when the tobacco leaves are baked and packaged; measuring color indexes of 10 representative tobacco leaves extracted from the sampling window through a colorimeter in need of judging the yellowing degree of the tobacco leaves in the tobacco leaf yellowing stage, measuring the chlorophyll content, the carotenoid content and a ratio of the chlorophyll content to the carotenoid content at the same time, and taking average values. According to the method disclosed by the invention, the problem that definite indexes and a measuring method for the tobacco leaf yellowing degree and the baking progress of the tobacco baking and yellowing stage are always deficient is solved. According to the method, the indexes are definite; objective judgment indexes are obtained; the baking progress can be quantized; the error caused by vision is alleviated. Tobaccos are monitored by the method, and the colors of the baked tobacco leaves are uniform and consistent; the comprehensive quality is improved; the tobacco leaf baking quality can be improved. The method is suitable for tobacco enterprises.

Description

technical field [0001] The invention relates to a method for detecting substances by utilizing changes in appearance color and inner pigment content, and particularly relates to a method for judging the degree of yellowing of tobacco leaves during the yellowing period of curing and curing process of flue-cured tobacco. Background technique [0002] The degree of yellowing of tobacco leaves during the curing process is one of the key indicators for judging the curing process of flue-cured tobacco. At present, the change state and yellowing degree of tobacco leaves during the curing process of flue-cured tobacco are mainly judged by human sensory organs and experience, lack of quantitative indicators, and have large errors. During the curing process of flue-cured tobacco, people mainly judge the degree of yellowing of tobacco leaves by the yellowing area and yellowing characteristics of tobacco leaves. Leaf color is one of the important indicators for judging the yellowing ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/31
Inventor 武圣江谢已书涂永高李德仑韦克苏李国彬姜均张长云赵会纳韩志康陈波
Owner GUIZHOU TOBACCO SCI RES INST
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