Abstract: Extracts of garlic(Allium sativum) were analyzed by GC-MS using wide-bore capillary columns(0.53 mm i.d.) with cryogenic injection and slow column heating rates(5℃/min),and GC-MS transfer line temperatures of 100℃.Authentic samples of suspected components were used to verify identities.Under these conditions,nine thiosulfinates in garlic were all identified.