Zhengzhou Kun Lee Food Additives Co., Ltd. Contact: Liu Mobile: 13598849000 Tel: 0371-86501522 400-613-3132 QQ: 961652653 Address: Zhengzhou Jingguang Road Logistics two long rows on the 25th http: //www.zzklgs. com / sour agent classified according to their composition introduced sour agent into two major categories of organic and inorganic acids. Food is the main naturally occurring organic acids, such as citric acid, tartaric acid, malic acid, fumaric acid, ascorbic acid, lactic acid, gluconic acid and the like; inorganic acids are phosphoric acid and the like. Sour agents can be divided into the following categories according to their sour: ① pleasant: citric acid, ascorbic acid, gluconic acid, L- malic acid; ② with bitterness: DL- malic acid; ③ with astringency: tartaric acid , lactic acid, fumaric acid, phosphoric acid; ④ irritating odor: acetic acid; ⑤ have umami: glutamate.