Tobacco leaf chemistry routine index weight assignment method for tobacco leaf quality evaluation

Abstract

A tobacco leaf chemistry routine index weight assignment method for tobacco leaf quality evaluation is provided; after a tobacco leaf sample is taken and prepared, totally 14 indexes comprising total plant alkaloids, total nitrogen, total sugar, reducing sugar, potassium ion, chlorine ion, starch, petroleum ether extract total amount, volatile alkalis, pH value, nitrogen-nicotine ratio, proteins, sugar-nicotine ratio and Shmuck value are determined as routine chemical component indexes; then detection or calculating methods of the indexes are determined; and finally a statistical method is determined. Basic principles of correlation analysis and principal component analysis are used for reference, and based on the tobacco leaf routine chemical component indexes, correlation alternative and factor analysis weight assignment are adopted to achieve dimension reduction of multidimensional data and accurate assignment of the characteristic indexes. The method has the advantages of higher practicability, simple and accurate operation, and easy promotion and application.

Description

technical field [0001] The invention relates to a method for evaluating the quality of chemical components of tobacco leaves. Technical field method. Background technique [0002] Tobacco leaf is the raw material base of the cigarette industry, and its quality will directly determine the quality of cigarettes. Tobacco leaf quality mainly includes four parts: appearance quality, physical characteristics, chemical composition quality and sensory quality of tobacco leaves. Among them, the quality of internal chemical components of tobacco leaves not only plays a decisive role in the appearance and physical characteristics of tobacco leaves, but also is the material basis for the sensory quality and sensory style of tobacco leaves. How to objectively and simply screen out representative chemical composition quality indicators to accurately and systematically reflect the overall characteristic information of the internal quality of tobacco leaves has become a research hotspot in...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for evaluating the quality of tobacco leaves by using the method of assigning values ​​for tobacco leaf chemical routine indexes based on factor analysis to address the shortcomings of the above-mentioned existing methods and the lack of systematization and popularization of tobacco leaf quality evaluation in China at present. The extraction of effective quality information and the tracking and evaluation of quality provide a simple, accurate, operable and easy-to-promote method

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