... BODIES,PYRUVIC ACID, acetic acid, FATTY ACIDS, SUCCINICACID, citric acid, even the nucleic acids DNA and RNA. GLUTAMIC ACID and ASPARTIC ACID (two com-mon AMINO ACIDS) are classified as acidic aminoacids, ... deficiency of acetyl-choline in critical regions of the brain. (See alsoSENILITY.)acetylsalicylic acid The chemical name forASPIRIN.achlorhydria A condition resulting from the lack of STOMACH ACID. ... compounds in foods are weak acids, includ-ing CITRIC ACID, ACETIC ACID, and TARTARIC ACID.Several weak acids are used as FOOD ADDITIVES,including benzoic acid, CARBONIC ACID, and alginicacid....