Research on relationships between neutral aroma constituents and concentration and quality of aroma of flue-cured tobacco in Panxi tobacco-growing areas.

To research on quantitative relations between neutral aroma constituents and concentration and quality of aroma of flue-cured tobacco in Panxi tobacco-growing areas,and to offer a new and impersonality method of flue-cured tobacco quality assessment,the authors carried out partial correlation analysis,path analysis and stepwise regression analysis,and established mathematics model and studied the factors of neutral aroma constituents affecting concentration and quality of aroma of flue-cured tobacco in this paper.The results showed that the more direct influence to concentration and quality of aroma was from the degrading products of carotene and browning reaction products,and the following was from the degrading products of hypoglycemia,but the opposite more direct influence was from the degrading products of cembratriendid,neopytodiene and some of aldehydes,yet the opposite direct influence from some of the degrading products of hypoglycemia,carotene and browning reaction products was less.When the new cigarette blending would be developed,the degrading products of carotene and browning reaction products should be taken into consideration first,then to comprehensively consider the rest of neutral aroma constituents.