Effect of Mechanical Properties of Flue-cured Tobacco on the Quality of Threshing and Redrying Lamina
In order to investigate the effect of mechanical properties of flue-cured tobacco on the quality of threshing and redrying processing,C3F grade tobacco leaves produced from three production areas,Chenzhou in Hunan Province,Bijie in Guizhou Province and Sanming in Fujian Province were selected to analyze their mechanical properties,the area distribution and shape characteristics of the tobacco leaves after threshing and redrying processing were tested,and the relationships between the mechanical properties and the quality indicators of the tobacco leaves were analyzed using relevant analysis.The results showed that other mechanical indicators of tobacco leaves from three different production areas showed significant differences,except for tensile strength,elongation,and stem content.Tobacco leaves in Chenzhou had higher shear strength and penetration strength,tobacco leaves in Bijie had the highest adhesion force,while tobacco leaves in Sanming had higher leaf stem binding force and branch binding force.The overall area of tobacco leaves in Chenzhou was relatively larger,with a high proportion of area over 500 mm2.Tobacco leaves in Bijie had good uniformity,with a high proportion of tobacco with an area of 300-500 mm2.The area of tobacco leaves in Sanming was relatively smaller,the proportion of tobacco with an area of less than 300 mm2 was significantly higher than other areas.There were no significant differences in rectangularity,thinness,and circularity.The proportion of lamina area distribution in different production areas showed a trend of first increasing and then decreasing with the increase of lamina area,and the difference in shape characteristic indicators(Xc)was not significant,with slight differences in the proportion peak value.Among them,tobacco in Bijie had the highest proportion peak value with a rectangular degree of 0.63 and a contour temperature characteristic value of 3.75,while tobacco in Sanming had the highest proportion peak value with a circular degree characteristic value of 2.79.There was no significant difference in the proportion peak value of ellipticity characteristic values among different areas of tobacco.The characteristic area of tobacco was significantly positively correlated with shear strength,was weakly correlated with tensile strength,adhesion,stem ratio,and strongly correlated with other indicators;The uniformity coefficient was significantly negatively correlated with tensile strength,strongly correlated with adhesive strength,weakly correlated with extensibility,stem ratio,stem binding force,and not correlated with other indicators;The rectangularity,slenderness,and contour temperature of tobacco had no correlation with branch adhesion,roundness had no correlation with stem ratio,while other mechanical indicators had certain impact on them.In summary,tobacco leaves from Chenzhou,Hunan had strong processing resistance and a relatively larger overall area.Tobacco leaves from Bijie,Guizhou had good uniformity in area and were mostly irregular in shape.Tobacco leaves from Sanming,Fujian had strong stem and branch binding force,but the overall area was relatively smaller.
Flue-cured tobaccoMechanical propertiesThreshing and redryingLamina areaLamina shape
万方数据
维普
