Compounds (citric acid derivatives) represented by formulas (1) and (2) below are novel compounds having an inhibitory effect against liver disorder and can be used as liver disorder inhibitors and food additives (wherein R1 represents a C1 to C3 alkyl group optionally having a carboxyl group or a hydroxyl group, and R2 represents a hydrogen atom, or R1 and R2 optionally form a cyclic structure together to represent a C2 to C3 alkylene chain).
