Analysis of Variation of the Contents of Main Volatile Aroma Components in Different Flue-Cured Tobacco Genotypes

The variation of the contents of main volatile aroma components in 52 flue-cured tobacco genotypes was studied.The result indicated that:There existed widely variation for main volatile aroma components among different genotypes.The total content of volatile aroma components was(1 072.06±214.69)μg·g-1.The contents of products of aromatic amino acid metabolism,products of maillard reaction,products degraded by cembrane,products degraded by carotene and neoplytadiene were(21.65±4.85),(32.56±6.13),(34.13±15.44),(62.01±8.56) and(919.04±207.25)μg·g-1,respectively.The genotypes studied were classified into 3 groups.Group Ⅰincluded 28 genotypes,with the medium content of total aroma matters,and highest contents of products of aromatic amino acid metabolism,products of maillard reaction and products degraded by cembrane.Group Ⅱ consisted of 19 genotypes,with the lowest contents of both total aroma matters and kinds of products of degraded aroma matters except products degraded by cembrane.Group Ⅲ consisting of 5 genotypes had the highest contents of total aroma matters,products degraded by carotene and neoplytadiene,but the lowest content of products degraded by cembrane.