CN-117110192-B - Method for evaluating glycerol addition effect in sheet tobacco based on mechanical property index

CN117110192BCN 117110192 BCN117110192 BCN 117110192BCN-117110192-B

Abstract

A method for evaluating the glycerol addition effect in a tobacco flake based on mechanical property indexes is characterized in that the change of the mechanical property of the tobacco flake after feeding is evaluated, n mechanical indexes comprise a shearing force, a pulling force, a penetrating force and an adhesion force to form an n-dimensional space, the mechanical index of the tobacco flake before adding glycerol is taken as a reference point, the mechanical index of the tobacco flake after adding glycerol is taken as a calculation point, the relative distance between two points represents the comprehensive change of the mechanical property of the tobacco flake, and the glycerol addition effect is judged to be better, general or worse through the numerical value interval of the relative distance obtained through calculation. The invention has the advantages that the testing process is simple and easy to operate, the mechanical index testing and the glycerol feeding effect are organically combined, the method can be used for discussing the relevance of the feeding effect and the subsequent parameter adjustment of the shredding process, is scientific, reasonable, objective and feasible, and provides a brand-new glycerol feeding effect judging way.

Inventors

WANG LE
LI BIN
ZHAO MEILI
LU DUANFENG
DENG GUODONG
WU ZHIFENG
FU LILI
YANG YUYAO
ZHANG QI
WANG BING

Assignees

中国烟草总公司郑州烟草研究院

Dates

Publication Date: 20260512
Application Date: 20230906

Claims (3)

1. A method for evaluating the glycerol addition effect in a tobacco flake based on mechanical property indexes is characterized by evaluating the mechanical property change of the tobacco flake after feeding, wherein n mechanical indexes form an n-dimensional space, the mechanical indexes comprise shearing force, tensile force, penetrating force and adhesion force, the mechanical index of the tobacco flake before adding glycerol is used as a datum point, the mechanical index of the tobacco flake after adding glycerol is used as a calculation point, and the relative distance between two points represents the comprehensive change of the mechanical property of the tobacco flake, and the method comprises the following specific steps: The method comprises the steps that firstly, tobacco flakes without glycerol feed liquid are balanced for more than 48 hours under a certain temperature and humidity condition, so that the moisture content of the tobacco flakes is 18% -20%; Balancing the tobacco flakes added with the glycerol feed liquid in the same batch for more than 48 hours under a certain temperature and humidity condition, wherein the mass ratio of the glycerol feed liquid added is 5% -15%, and the balanced tobacco flakes are not subjected to a water content test; Detecting mechanical characteristic indexes of shearing force, pulling force, penetrating force and adhesion force of the tobacco flakes by using a texture analyzer, repeating the operation for more than 10 times in principle for obtaining each mechanical index, and taking an average value as a final result; determining a mechanical property evaluation standard of the tobacco flakes, taking the mechanical index of the tobacco flakes without glycerol feed liquid as a reference The coordinates of the tobacco flakes after feeding are measured as Wherein The comprehensive variation amplitude of the mechanical characteristics of the tobacco flakes after the glycerol feed liquid is added is characterized by the relative distance l of the coordinates of the two points in an n-dimensional space, which is obtained by deformation according to the concept of the dispersion of reference data, Expressed by the relative distance l of the two points in the n-dimensional space, It is known that l is a dimensionless number, i is more than or equal to 0 and less than or equal to 100%; step five, determining an evaluation rule When l is less than 10%, the comprehensive change of tobacco sheet mechanical indexes is small, the working parameters of the tobacco cutting machine do not need to be adjusted, and the feeding effect is good; When l is more than or equal to 10 percent and less than 20 percent, the comprehensive change of the tobacco flake mechanical index is moderate, and the feeding effect is general; When l is more than or equal to 20%, the comprehensive change of tobacco sheet mechanical indexes is larger, and the feeding effect is poor.
2. The method according to claim 1, wherein the concentration of the glycerol feed solution in the second step is 60% -80%.
3. The method of claim 1, wherein the first and second steps are operated in parallel and the order of the steps is reversed.

Description

Method for evaluating glycerol addition effect in sheet tobacco based on mechanical property index Technical Field The invention relates to the field of tobacco charging detection, in particular to a method for evaluating the glycerol adding effect in tobacco flakes based on mechanical property indexes. Background The main task of the feeding procedure in cigarette production is to accurately and uniformly apply the feed liquid to tobacco flakes (cut tobacco) according to the prescription specification, so as to improve the sensory properties and physical properties of the tobacco flakes. The tobacco flakes are cut after being fed, the cutting process has certain requirements on the processing resistance of the tobacco flakes, and the selection of the working parameters of the tobacco flakes depends on the physical properties of the tobacco flakes, in particular the mechanical properties such as shearing force, pulling force and the like. The problem of insufficient aroma of the heated cigarette products can be solved by using natural tobacco leaves as raw materials to produce the heated cigarette core. Glycerol is an important raw material for heating cigarette smoke agents. The heated cigarette product produced by taking reconstituted tobacco as a raw material has certain defects in the aspect of the original aroma characteristics of tobacco, and the production of the heated cigarette core by taking natural tobacco as a raw material becomes a new research direction. The smoke agent of the heated cigarette mainly comprises glycerin, propylene glycol and other components, and the addition amount of the smoke agent in the heated cigarette is generally required to be about 15-20%. The mechanical properties of tobacco leaves can be influenced by the addition of glycerol and the moisture content of the tobacco leaves, all aspects of performance evaluation on the tobacco leaves after glycerol feed liquid is added is needed in order to fully utilize the existing process equipment of a production line, and the feeding proportion is good to adapt to the working parameters of the existing equipment on the premise of meeting the production requirement. At present, the evaluation of the feeding effect is concentrated on aspects of feeding amount detection, feeding uniformity, feed liquid utilization rate, feeding accuracy and the like, and the evaluation method is only used for feeding back the feeding effect of the finished process, and the evaluation of the mechanical properties of tobacco flakes concerned by the subsequent shredding process is freshly researched. Disclosure of Invention The invention aims to provide an evaluation method for the effect of tobacco flakes and glycerin based on the application background and the prior art. The invention is based on the working mechanism that the change of the mechanical property of the tobacco flakes after feeding is evaluated, n mechanical indexes (the indexes comprise shearing force, pulling force, penetrating force and adhesion force) form an n-dimensional space, the mechanical index of the tobacco flakes before adding glycerol is used as a datum point, the mechanical index of the tobacco flakes after adding glycerol is used as a calculation point, the relative distance between the two points represents the comprehensive change of the mechanical property of the tobacco flakes, The aim of the invention is realized by the following technical scheme: a method for evaluating the glycerol addition effect in tobacco flakes based on mechanical property indexes comprises the following specific steps: The method comprises the steps that firstly, tobacco flakes without glycerol feed liquid are balanced for more than 48 hours under a certain temperature and humidity condition, so that the moisture content of the tobacco flakes is 18% -20%; Balancing the tobacco flakes added with the glycerol feed liquid in the same batch for more than 48 hours under a certain temperature and humidity condition, wherein the mass ratio of the glycerol feed liquid added is 5% -15%, and the balanced tobacco flakes are not subjected to a water content test; And thirdly, detecting the mechanical characteristic indexes of shearing force, pulling force, penetrating force and adhesion force of the sheet tobacco by using a texture analyzer. The acquisition of each mechanical index is basically repeated for more than 10 times, and the average value is taken as a final result; And step four, determining a tobacco mechanical property evaluation standard. Taking the mechanical index of the feed liquid tobacco flakes without glycerol as a reference The coordinates of the tobacco flakes after feeding are measured asWhereinThe comprehensive variation amplitude of the mechanical characteristics of the tobacco flakes after the glycerol feed liquid is added is characterized by the relative distance l of the coordinates of the two points in an n-dimensional space, which is obtained by deformation according to the