Recently, researchers have been focusing on the benefits of a variety of sulfur-containing compounds in garlic instead of allicin. These are classified as oil- and water-soluble compounds. Oil-soluble compounds include sulfides, such as diallyl sulfide (DAS), diallyl disulfide (DADS), diallyl trisulfide and allyl methyl trisulfide, dithiins, and ajoene. Water-soluble compounds include cysteine derivatives, such as S-allyl cysteine (SAC), S-allyl mercaptocysteine (SAMC) and S-methyl cysteine, and gamma-glutamyl cysteine derivatives. Oil-soluble sulfur compounds are odorous, whereas water-soluble compounds are odorless. Moreover, water-soluble compounds are more stable and safer than oil-soluble compounds (1).