First study on the fatty acids and their derived volatile profiles from six Chinese wild spine grape clones (Vitis davidii Foex)

Abstract Spine grapes (Vitis davidii Foex) native to China are an important wild grape species. To evaluate the differences in the fatty acids which may contribute to the aroma of spine grapes, four red and two white spine grape clones were used as materials. GC-MS analysis of spine grapes revealed ten fatty acids, and 9,12-octadecadieneoic acid and linolenic acid were the major UFAs in the six clones. The highest concentrations of C6 and C9 volatiles were detected in Gaoshan #4 and Baiputao #1, respectively. The concentrations of C6 compounds in spine grapes were closely related to linolenic acid and linoleic acid, and positively correlated with the expressions of VdLOXA, VdLOXC, VdLOXD and VdHPL1. These results would fill the gap knowledge of fatty acids in spine grapes and provide information for future research on the classification of spine grapes flavor type.