Grey superior analysis of the relations between chemical component and aroma index in sensory quality of flue-cured tobacco

In order to study the relatine importance of chemical component index among tobacco quality evaluation,the paper evaluated the importance of chemical components according to the relationship between chemical components and sensory quality by grey superior analysis.The results indicated that a group of chemical component indexes had been found by grey superior analysis and tobacco chemistry analysis to have close connection with sensory quality.For the flue-cured tobacco of Chuanyu tobacco base from the main tobacco-growing areas in Huanghuai areas,the chosen tobacco quality evaluation indexes were the ratio of total sugar to protein,petroleum ether extract,chlorogenic acids,hexanoic acid and phenethanol,thus reducing the tobacco quality evaluation indexes to five from sixty-five.