Abstract:

This paper adopts shatter resistance index not only to investigate the relationship between different grades of smash-resistant property and temperature, moisture content, conventional chemical composition of tobacco, but also assess the divergence of flue-cured tobacco segmentation smash-resistant performance.The result indicates that (1) If tobacco moisture content increase from 8% to 26%, tobacco shatter resistance index (SRI value) will elevate by 50%, of which the middle and upper part moisture content experienced inflection with 20%, while the lower part had a slightly higher proportion, 22%. With the temperature rise from 20℃ to 90℃, the SRI value increase by 10%. The test also suggests that between 60℃ and 70℃ tobacco acquire best smash-resistant performance. (2)Smash-resistant performances descend from higher level tobacco to lower level. While middle part tobacco has the best smash-resistant performance, upper part tobacco positioned second and lower part remain the last, flue-cured tobacco leaves segmentation's strongest part lies within leaf apex, leaf middle and leaf base follow behind accordingly. (3) General chemistry components are positively correlated with the SRI values, the correlation coefficient is relatively larger between reduced sugar, potassium, total sugar and SRI value(highly or moderate relevance), and it is sufficient to improve the tobacco smash-resistant performance by increasing the proportion of reduced sugar, potassium and total sugar.