Black Garlic With twice the antioxidant levels of white garlic, It is toxic to 14 types of cancers, and has powerful healing benefits. Scientists found that each clove of garlic has an astonishing 400 plus beneficial compounds found within the oil. One of the key compounds is called allicin. Each bulb of garlic contains an enzyme called alliance which combines with alliin found in the garlic bulb to form the active compound allicin, which has health enhancing properties and gives garlic its distinctive odour even in some supplements.