3,4-dihydroxybenzoic acid is a simple phenolic acid and a precursor for the synthesis of vanillin, cyananthine, 3-O-β -D-glucoside and other complex molecules, which can be found in tea, brown rice, fruits, vegetables, nuts, and some Chinese herbs. 3,4-dihydroxybenzoic acid has a variety of biological activities, can play anti-inflammatory, antiviral, antioxidant, nerve protection, chemical protection and other functions, it is commonly used in the pharmaceutical industry, clinical, it is also often used to treat children pneumonia, acute pyelonephritis, acute pancreatitis, bacterial dysentery, burns and some ulcer disease.
The application of 3,4-dihydroxybenzoic acid is not limited to the medical industry, it is also very popular in feed production. 3,4-dihydroxybenzoic acid can be used as feed additive in feed, which can improve feed conversion rate, promote growth and development, enhance immunity and disease prevention ability of livestock and poultry, as well as improve carcass quality and meat flavor. The use of 3,4-dihydroxybenzoic acid can avoid potential safety hazards and toxic and side effects of organic acids. Through the control of dosage and quality, its application prospect in livestock and poultry breeding is also very optimistic.