3,4-dihydroxybenzoic acid, an organic compound that can be dissolved in hot water, ethanol, ether and acetone, also belongs to organic acids, exists in the leaves of Pteridophyte aconite and Holly Holly. The 3,4-dihydroxybenzoic acid we see in the market is 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, and has obvious effects on the inhibition of Bacillus pneumoniae, Escherichia coli, Staphylococcus aureus, Acinetobacter boschii, Pseudomonas aeruginosa, Streptococcus a and Haemophilus influenzae, etc. It has a stronger bacteriostatic effect than Rosin. 3,4-dihydroxybenzoic acid is not only widely used in the medical field, but also in the food industry, which can effectively inhibit food corruption and prevent bacteria from contaminating food.