Volatile Constituents of Mold-Susceptible and Mold Resistant Sorghum [Sorghum bicolor (L.) Moench] Grains

Headspace volatile compounds of mold-susceptible and mold-resistant sorghum [Sorghum bicolor (L.) Moench] grains were determined. The concentrations of volatile compounds in mold-susceptible sorghum were higher than those of mold-resistant sorghum. Among the 10 compounds that were identified, 2-methylbutanal was severalfold higher in the mold-susceptible sorghum than in the mold-resistant sorghum. A comparison of volatile compounds of mold-susceptible grains obtained from greenhouse-grown sorghum (mold-free) with those of field-grown sorghum indicated the possibility of a large contribution of volatile compounds from fungal organism