3,4-dihydroxybenzoic acid is an organic compound soluble in hot water, ethanol, ether, and acetone. It is naturally found in the leaves of pteridaceae, Holly leaf, phylum Orientale, Orientin, Acanthopanax sessiliflorum and other common Chinese herbs. It is also an organic acid. 3,4-dihydroxybenzoic acid found on the market is usually a white to brown crystalline powder that changes color when exposed to air.
Because 3,4-dihydroxybenzoic acid has a variety of biological activities, it can play anti-inflammatory, antibacterial, antioxidant, chemical protection and other functions, it has a significant inhibitory effect on Bacillus pneumoniae, Escherichia coli, Staphylococcus aureus, Acinetobacter boschii, Pseudomonas aeruginosa, Streptococcus a, haemophilus influenzae, etc. The antibacterial action of 3,4-dihydroxybenzoic acid is stronger than that of roxb.
3,4-dihydroxybenzoic acid is not only widely used in the medical field, but also in the food processing industry, which can effectively inhibit food corruption and prevent food from bacterial contamination.