Economical, portable and efficient grading method for maturity of fresh tobacco leaves of flue-cured tobaccos

Abstract

The invention discloses an economical, portable and efficient grading method for maturity of fresh tobacco leaves of flue-cured tobaccos. The grading method comprises the following steps: evaluating to-be-tested tobacco leaves, wherein the evaluation content comprises visual inspection on botanical characters of the tobacco leaves, and detection on the content of chlorophyll a and carotenoid of the tobacco leaves, if the evaluation result reaches the corresponding index, judging into corresponding maturity grade; and picking up the tobacco leaves of which the maturity grade accords with the requirements according to the individual requirements. According to the method, by combination of the content detection on the chlorophyll a and carotenoid in the tobacco leaves and the visual inspection of the appearance characteristics of the tobacco leaves, a characteristic grading index is provided for the flue-cured tobacco varieties with faint scent tobacco leaf in three southwest tobacco-growing areas of K326, honghua dajinyuan (Chinese character) and Yunnan tobacco 87; grading of the maturity of fresh tobacco leaves is carried out by adopting the method; supply of reasonable choice for scientifically harvesting the ripen tobacco leaves with different varieties and full play of genetic potential of variety and quality are facilitated; the aromatic style of the fainted scent tobacco leaves is strengthened; the smoking quality of the tobacco leaves is improved; and the grading method is especially suitable for popularization and application in the fainted scent tobacco leaf planting areas in the southwest tobacco-growing areas.

Description

technical field [0001] The invention belongs to the technical field of maturity classification of tobacco leaves, and in particular relates to an economical, convenient and efficient method for grading the maturity of fresh flue-cured tobacco leaves. Background technique [0002] Tobacco leaf production is the foundation of the cigarette industry, and the quality of tobacco leaves plays a decisive role in the quality of cigarettes. Tobacco leaf maturity is the first factor that determines the quality of flue-cured tobacco. The maturity of fresh tobacco leaves is divided into physiological maturity and technological maturity. When the leaf grows to its final size and the accumulation of dry matter in the leaf reaches its maximum value, it reaches physiological maturity, so it is called physiological maturity. Tobacco leaves that have reached physiological maturity are scientifically modulated after harvesting, and the yield is the highest, but from the perspective of qualit...

AI Technical Summary

Problems solved by technology

However, this judgment method is mainly based on the subjective judgment of the naked eye, and there are often large differences in operation due to different people's judgment standards.

Moreover, according to different industrial needs, different ecological environments and different varieties, the required maturity levels are often different.

[0004] In addition to visual inspection, there are spectral analysis methods, color comparison methods, etc. for grading the maturity of tobacco leaves, but these methods may require the purchase of expensive chromatographic collection instruments. Either it is greatly affected by the detection environment, or the data analysis is too cumbersome, and its use is restricted by certain conditions, making it difficult to quickly, stably and economically determine the maturity of fresh tobacco leaves in the field.