In vitro: |
Biosci Biotechnol Biochem. 1998 Nov;62(11):2273-6. | Antimicrobial activity of 4-hydroxybenzoic acid and trans 4-hydroxycinnamic acid isolated and identified from rice hull.[Pubmed: 9972252 ] | METHODS AND RESULTS: Two antimicrobial substances in rice hull were isolated and identified as 4-hydroxybenzoic acid and trans 4-hydroxycinnamic acid by LC-MS, and 1H- and 13C-NMR. An evaluation of 50% inhibition of growth (IC50) revealed that the two substances had different inhibition profiles against various microorganisms. CONCLUSIONS: Most of the gram-positive and some gram-negative bacteria were sensitive to trans 4-hydroxycinnamic acid and 4-hydroxybenzoic acid at IC50 concentrations of 100-170 and 160 micrograms/ml, respectively. | Int. J.Pharmaceut. Sci. Rev. Res., 2013, 22(2): 109-15. | A Comprehensive Review on Biological activities of p-hydroxy benzoic acid and its derivatives.[Reference: WebLink] | p-hydroxy benzoic acid (PHBA) is an organic chemical which can be obtained naturally as well as synthetically. The literature survey reveals its various biological properties viz. antimicrobial, antialgal, antimutagenic, antiestrogenic, hypoglycemic, anti-inflammatory, anti-platelet aggregating, nematicidal, antiviral, antioxidant etc. It is also reported to be used as preservative in many drugs, cosmetic products, pharmaceuticals, food and beverages. Some derivatives of 4-Hydroxybenzoic acid are found to possess direct action on Hbs molecules, inhibit acetic acid induced oedema and used in management of sickle cell disease. CONCLUSIONS: The present study will give comprehensive information of the biological activities of this p-hydroxy benzoic acid and its derivatives. |
|