Delta-tocopherol synthetic (E309) ndi antioxidant yomwe imateteza ma cell kuti asawonongeke pochepetsa makutidwe ndi okosijeni a lipids (mafuta) ndikupanga ma radicals aulere.
E309 (syntax delta-tocopherol) imaphatikizidwa pamndandanda wazowonjezera zakudya omwe alibe chilolezo chogwiritsa ntchito pamakampani azakudya mdziko lathu.