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Authors
Affiliations
1 Department of Botany, St. Josephs College, Irinjalakuda-680121, Distt. Trichur, Kerala, IN
2 R & D Department, Kerala Ayurveda Limited, Aluva-683 585, Kerala, IN
3 Department of Botany, St. Teresa’s College, Ernakulam-682 035, Kerala, IN
Source
Nature Environment and Pollution Technology, Vol 10, No 3 (2011), Pagination: 427-429
Abstract
The medicinal plant Gymnema sylvestre R. Br. is known for its antidiabetic potential. Preliminary phytochemical screening of stem and leaf samples of the herb showed positive test for flavonoids, hydrolysable tannins, phenols, saponins, sterols and terpanoids. The ash value is below the prescribed limit according to Ayurvedic Pharmacopeia. Antimicrobial activity was checked using agar well diffusion method. Water, methanol and ethanol extracts showed activity against Staphylococcus aureus. Bacillus subtilis is sensitive to hydroalcoholic and ethanolic extracts. The gram negative bacteria were resistant to the extracts. The antioxidant potential was assessed by DPPH assay method. The results provide evidence that Gymnema sylvestre leaf extract might indeed be potential source of free radical scavenger.
Keywords
Gymnema sylvestre R. Br., Phytochemical Analysis, Antibacterial Activity, Antioxidant Activity.
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