ACKNOWLEDGEMENTS
The study was supported by the Directorate of Ayurveda under the Health & Family Welfare department, Government of West Bengal by providing the sophisticated HPLC instrument. A part of the research was also funded by the University Grants Commission and the Department of Science & Technology, Government of West Bengal by way of provision of the standard phenolic compounds for research in the laboratory of department of Dravyaguna Vigyan (Medicinal plant Pharmacology) of I.P.G.A.E.R. Kolkata.