3,5-Dihydroxybenzoic acid a potential biomarker for the consumption of many food products, including beer, nuts, peanut, and pulses. 3,5-Dihydroxybenzoic acid is the agonist for hydroxycarboxylic acid receptor 1 (HCA1, also known as GPR81) that inhibits lipolysis in adipocytes. 3,5-Dihydroxybenzoic acid is the competitive inhibitor for tyrosine phenol-lyase (TPL), exhibits an affinity of Ki=25.7 µM. 3,5-Dihydroxybenzoic acid is orally active[1][2].
