Active Compounds Variation in Grapevine Varieties Leaves Using GC-MS

This study aimed to recognize the major bioactive compounds in the leaves of seven grape (Vitis vinifera L.) cultivars viz., Black Prince, Red Globe, Taifi, Baitamoon, Tahlak, Rush Meow, and Zark, grown in the Duhok province (Kurdistan Region, Iraq) during the 2023 season. GC-MS analysis illustrates a total of 24 compounds in Black Prince, followed by Taifi (17), Red Globe (14), Baitamoon (13), and 10 each in Tahlak, Rush Meow, and Zark. The amplest compounds involved methyl palmitate in Tahlak (49.44%), Red Globe (24.56%), and Black Prince (24.39%); 16-hentriacontanone in Taifi (16.76%); dihydro-pseudokubisine in Baitamoon (27.08%); α-tocospiro A in Rush Meow (30.51%); and α-tocospiro B in Zark (32.71%). These findings highlight the chemodiversity among varieties and advocate that predominant constituents can compose as variant markers. Further research on limits of detection (LoD) and quantification (LoQ) is recommended to validate the analytically precisions of GC-MS profilings.