Organic compounds of carbon and oxygen atoms. They are among the Organic acids with different, but compared to other groups such as alcohols or phenols relatively strong acidity. In the wine can be a bunch of carbonic acids happen, that is formic acid. malic acid. butyric. acetic acid. salicylic acid. sorbic acid. tartaric acid. cinnamic acid and citric acid, Other groups of carboxylic acids are the amino acids and (to which lactic acid counts) hydroxycarboxylic acids.