A method for determining the content of stems in cut tobacco based on near-infrared spectroscopy

Abstract

The invention discloses a method for determining the content of stems in cut tobacco based on near-infrared spectroscopy, comprising: preparing standard tobacco powder samples with different stem contents; collecting the near-infrared spectrum of each standard tobacco powder sample, and performing order Derivation to obtain a new spectrum; obtain a significant fluctuation interval and a standard curve; calculate the Euclidean distance from each new spectrum to the standard curve in each significant fluctuation interval and the Euclidean distance of the same new spectrum in all significant fluctuation intervals respectively Add the similarity coefficient of each new spectrum; fit the relationship between the stem content and the similarity coefficient according to the similarity coefficient of each new spectrum and the stem content of the corresponding standard tobacco powder sample; obtain the similarity coefficient of the cut tobacco to be tested, The stalk content in the cut tobacco to be tested was calculated based on the relationship between the stalk content and the similarity coefficient. The above method is a brand-new method that can accurately, quickly and objectively measure the content of stems in cut tobacco, and meets the technical requirements for the determination of the content of stems at the present stage.

Description

technical field [0001] The invention belongs to the technical field of cigarette processing, and in particular relates to a method for measuring the content of stems in cut tobacco based on near-infrared spectroscopy technology. Background technique [0002] The design of cigarette formula is the core and basis for affecting the sensory quality of cigarettes. The accurate blending of shredded leaves, cut stems, and reconstituted tobacco leaves in the cigarette formula has a relatively high impact on the physical indicators, smoke characteristics, especially the intrinsic sensory quality of cigarettes. big impact. Among them, the determination of stem content in cigarette formulations is the key to judging and evaluating the content of stems in cigarette cut tobacco and the blending quality of cut stems in cigarette cut tobacco. [0003] At present, the content of stalks in cut tobacco plays an increasingly significant role in reducing the harm of cigarettes, regulating the ...

AI Technical Summary

Problems solved by technology

This method is relatively simple and easy to obtain, but it has disadvantages such as low detection efficiency, poor accuracy, and large human influence.

With the continuous updating and upgrading of cut stem manufacturing technology, the difference between the shape of cut stems processed by cigarette companies and the shape of leaf cuts is gradually narrowing, making it more difficult to select and measure through artificial vision

In addition, the measurement of expanded shredded tobacco can be based on the difference in apparent density, which can be separated by liquid suspension method and then weighed. The difference effectively separates it from

At the same time, it may be possible to distinguish the blending ratio of cut stems in the cigarette formula through the differences in the conventional chemical components of the tobacco raw materials (total sugar, reducing sugar, total nitrogen, potassium, chlorine, etc.), but there will still be sample differentiation during the measurement process Due to the problems of small precision, poor repeatability and heavy workload, it is not enough to effectively achieve the purpose of accurate and rapid determination of stem content in cigarette formula

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