Abstract
Many plants used in Saurashtra folk medicine have been reported to exhibit high antibacterial and antioxidant activities. In the present study, some parts of five plants, Guazuma ulmifolia L., Manilkara zapota L., Melia azedarach L., Syzygium cumini L. and Wrightia tomentosa R.& S., were evaluated for their antibacterial activity, total phenol content, flavonoid content, 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity and phytochemical analysis, using successive extraction by cold percolation method with petroleum ether, ethyl acetate, methanol and water. In vitro antibacterial activity was evaluated against five bacterial strains viz. Bacillus subtilis, Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella typhimurium and Enterobacter aerogenes by agar well diffusion method. Among the plants screened, W. tomentosa leaf and fruit showed the best antibacterial activity. The Gram-positive bacteria were more susceptible than Gram-negative bacteria. Methanol extract of M. zapota showed the best 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity. Highest total phenol content was shown by M. zapota and S. cumini in methanol extract, while highest flavonoid content was shown by W. tomentosa stem in petroleum ether extract and ethyl acetate extract. In all the plants, cardiac glycosides and triterpenes were more as compared to other phytoconstituents.
Highlights
Many plants used in Saurashtra folk medicine have been reported to exhibit high antibacterial and antioxidant activities
Several medicinal plants have been evaluated for possible antimicrobial activity and to get remedy for a variety of ailments of microbial origin[5,6]
In this article, antibacterial and antioxidant activities of the extracts obtained from five plants from their different parts that have been traditionally used as general health supplements are examined
Summary
Many plants used in Saurashtra folk medicine have been reported to exhibit high antibacterial and antioxidant activities. Some parts of five plants, Guazuma ulmifolia L., Manilkara zapota L., Melia azedarach L., Syzygium cumini L. and Wrightia tomentosa R. & S., were evaluated for their antibacterial activity, total phenol content, flavonoid content, 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity and phytochemical analysis, using successive extraction by cold percolation method with petroleum ether, ethyl acetate, methanol and water. In this article, antibacterial and antioxidant activities of the extracts obtained from five plants from their different parts (leaf, stem and fruit) that have been traditionally used as general health supplements are examined. The aim of this current work was to evaluate the antibacterial and antioxidant potential of extracts in different solvents of all these plants, as well as their total phenol and flavonoid contents
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