Abstract

ANTIOXIDANT POTENTIALS OF METHANOLIC ROOT FRACTIONS OF THREE VIBURNUM LINN. SPECIES

M. Srinivasa Murthy, K. Ponnudurai*, K. Prabhu and S. Shobha Rani

Abstract

The roots of Viburnum punctatum, Viburnum coriaceum and Viburnum erubescens were collected from Nilgiri Hills and Coimbatore, Tamilnadu and taxonomically authenticated. Herbarium of the species was submitted to the museum of the place of research studies. The samples were shade dried for a week. About 500 g of powdered samples were extracted with petroleum ether (40 - 60º C), chloroform and 80 % v/v methanol successively in a soxhlator one by one and followed by determination of percentage extractives. The extracts were qualitatively tested for different chemical constituents. The methanolic extracts were selected for further investigations such as total phenolic content and in vitro anti-oxidant potential. It was revealed that all three species exhibited an appreciable anti-oxidant potential against reference compound subjected, and anti-oxidant potential among three species was ascending in series V. Erubescens>V. Coriaceum>V. punctatum.

Keywords: Viburnum; Phenolic compounds; Anti-oxidant; In vitro; Nitric oxide; DPPH.