Antioxidant activity, total phenol and flavonoids estimation of the aqueous extract of the tuberous root of Decalepis hamiltonii was evaluated by free radical scavenging activity using 2,2-diphenylpicryl-1-picrylhydrazyl (DPPH), metal chelating activity, superoxide scavenging activity, ferric reducing antioxidant power assay (FRAP) and 2,2'azinobis (3-ethylbenzothiozoline-6-sulfonic acid) disodium salt (ABTS•+) assay. The content of polyphenols in the extract was determined by spectrophotometrically, calculated as gallic acid and catechin equivalent. The present investigation revealed that this plant has rich source of antioxidant properties. Naturally, tuber of this plant has been traditionally used as food by the tribal communities. Hence it is inferred that this plant is not only being as food and it can also be a good source of health tonic.Key Words: Decalepis hamiltonii; free radical scavenging activity; gallic acid; catechinDOI: http://dx.doi.org/10.3329/icpj.v1i4.10061International Current Pharmaceutical Journal 2012, 1(4): 71-76

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The present study deal with identification of rare, endanger and threatened plants in Maruthamalai Hills, part of Southern Western Ghats of Coimbatore District, Tamilnadu. In this investigation 30 rare, endangered and threatened (RET) plant species belongs to 15 families were identified and documented. Names of plants and RET category was gathered from IUCN annual reports and standard research articles. Enumerated plants were categorized in rare, endangered, endemic and threatened, species such as Caralluma bicolor, Terminalia arjuna, Ceropegia juncea, Rubia cordifolia, Celastrus paniculatus, Gloriosa suberpa, Gymnema sylvestres and so on. Finally it has been suggested that the RET medicinal plants are need to be proper conservation and management plans before it lost forever.