Tobacco Science & Technology, 2012, 5, p. 5-9, 23, ISSN.1002-0861

Secondary casing application in Virginia type cigarette

YAN Keliang(1); WU Yi(1); ZENG Xiaoying(1); XU Guowang(2); WANG Chao(1); HU Weiyao(1); LI Qinghua(1)
(1) Technology Center, Hongyun Honghe Tobacco (Group) Co., Ltd., Kunming 650202, P.R. China; (2) National Chromatographic Research & Analysis Center, Dalian Institute of Chemical Physics, CAS, Dalian 116023, Liaoning, P.R. China

In order to study the secondary casing (adding functional casing and brand specific casing) application in Virginia type cigarette, the appropriate blending proportion of three biological agents was investigated, the mechanism of functional casing was discussed, and preferable casing condition was tested. The results of secondary casing were verified by small-scale and middle-scale experiments, it showed that: 1) in the functional casing, the three biological reagents, M1, M2 and M3, mixed at the ratio of 2:1:2, could improve the smoking quality of tobacco leaf to a certain extent; 2) orthogonal experiment indicated that the optimal casing conditions for functional casing were: addition rate 0.07 %, temperature 20 °C, moisture content of tobacco 18 %, and stored for 24 hours; 3) the quality of tobacco leaf was improved by the action of enzymes in functional casing on the surface substances of leaf; 4) the results of verification experiments indicated that, secondary casing could obviously meliorate smoke pleasurableness, reduce smoke irritation and offensive odor, and effectively improve the quality of cigarette.