Author(s): LI Qiang, ZHOU Jiheng, CHENG Changxin, LIU Xiaoying, YANG Yingming, ZHANG Yiyang
Pages: 49-55
Year: 2015 Issue:  6
Journal: Chinese Tobacco Science
Keyword:  potassium content; aroma components; flue-cured tobacco; relationship;
Abstract: 204 flue-cured tobacco samples were collected in Yunnan Province.The relationship between potassium content and aroma components of flue-cured tobacco were analyzed using correlation analysis,gray correlation analysis and regression analysis.The results indicated that,the mean potassium content was 1.96% with a variation between 0.70%-3.24%,with 52.45% of the samples having low potassium content.Significant difference in potassium content of flue cured tobacco was observed between elevation groups and soil pH groups.The variation in flue-cured tobacco aroma components was huge in Yunnan (3.41-10.50 times),and the aroma components were highly significantly correlated with potassium content,with the order of grey incidence coefficients being: ketones>aldehydes>alcohols>nitrogen heterocyclic>phenols>esters.Potassium content and all the aroma component conformed to linear equations with at the extremely significant level,that is,with the increase of flue cured tobacco potassium content,a linear increase of aroma components was observed.Aroma components of the lowest potassium content group (potassium content is 0.97%) was 71.89μg/g (30.77%) less than that of the highest potassium content group (potassium content is 2.96%).Potassium nutrition is an important factor that affects the aroma components in Yunnan flue-cured tobacco.