The active ingredient of our Pure Natural Black Garlic Extract Powder are polyphenols and S-allylcysteine (SAC). S-allylcysteine (SAC) is only present in an aged garlic derived water soluble organosulfur compound and has been suggested to have anticarcinogenic activity against diverse types of cancer cells. From the selection of garlic raw materials to the packaging, storage and transportation of finished products, our factory strictly control each production link in strict accordance with HACCP, so that our SAC content can reach up to 5%. Free sample is available for your test, if you are interested in.