Attractive activities of different aroma components in tobacco leaves to Lasioderma serricorne

To explore the relationship between the selection behavior of Lasioderma serricorne and aroma components in tobacco leaves, the representative flavors in tobacco leaves such as dihydroactinidiolide, β-damascenone, isoprene, maltol, 2, 3, 5, 6-tetramethylpyrazine, 5-methylfurfural, isovaleric acid, β-methylvaleric acid, neophytadiene and nicotine were chosen in this study, and the influences of these odor compounds on the selection behavior of L. serricorne were determined by Y-tube olfactometer. The results showed that 2, 3, 5, 6-tetramethylpyrazine had the highest attractivity to L. serricorne with the attractive activity index up to 86.67%, and the selective percentage of 2, 3, 5, 6-tetramethylpyrazine was the highest at 1.0×10^-3 mol/L. In the subsequent selection experiments, it was concluded that compared with burley tobacco and cigar tobacco, L. serricorne tended to select flue-cured tobacco, oriental tobacco and dark sun-cured tobacco, among which flue-cured tobacco was its favorite.