Method for evaluating quality stability of redried finished sheet tobacco

Abstract

The invention discloses a method for evaluating the quality stability of redried finished sheet tobacco. The method comprises the following steps of: converting a qualitative description of the appearance color of the tobacco into quantifiable constant indexes L*(lightness value), a*(red and green value) and b*(yellow and blue value) based on the CIE1976L*a*b*color space; constructing a mean value and Xmax-Xmin graph (X-Rs control graph) by checking the normal distribution conformance of data of the L* value, the a* value and the b* value of the tested tobacco; and calculating a process capability index Cp of each index to determine the quality stability of the redried finished sheet tobacco. If the process capability indexes of the L* value, the a* value and the b* value meet the condition that Cp is greater than 1.00 and less than or equal to 1.33, the quality of the redried finished sheet tobacco is in a stable state, otherwise, the quality stability of the redried finished sheet tobacco is relatively low. By the method, the problem of limitation that the quality stability of the conventional redried finished sheet tobacco is only evaluated by subjective evaluation; and the method has the characteristics of simplicity in operation, reliable result and high adaptability.

Description

technical field [0001] The invention belongs to the technical field of tobacco processing, and in particular relates to a method for evaluating the quality stability of finished rebaked tobacco sheets. Background technique [0002] At present, leaf threshing and redrying of modular formula has become the mainstream trend of the development of the industry. It plays an important role in stabilizing the quality of cigarette products, but it also brings a series of problems such as how to evaluate the stability of the processing quality of modular finished tobacco sheets. Many scholars at home and abroad have found that there is a close correlation between the appearance color of tobacco leaves and the internal quality, which has laid a good foundation for using the appearance color of tobacco leaves to evaluate the quality stability of red-cured finished tobacco. Existing evaluation methods of rebaked finished tobacco sheets mainly focus on the temperature and moisture uniform...

AI Technical Summary

Problems solved by technology

Existing evaluation methods of rebaked finished tobacco sheets mainly focus on the temperature and moisture uniformity of the tobacco sheets, or subjective evaluations such as human eyesight, hand touch and nose smell, etc., and can only be described qualitatively rather than quantitatively.

Therefore, it is difficult to reflect the internal quali

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