Capsicum annum L. (Family: Solanaceae) and Hemidesmus indicus (Linn.) R.Br. (Family: Asclepiadaceae) are commonly used in Tamilnadufor treating various ailments in the native system of medicine. The hydroalcoholic extracts of both plants at dose level of 100 mg/kg body weight showed demonstrable anti-inflammatory activity in the carrageenan-induced hind paw model in rats. Nevertheless, the overall anti-inflammatory activity exhibited by the extracts are found to be less as compared with that of standard drug Indometacin. Preliminary physico-phytochemical analysis of the plants in question were attempted. The results are highlighted and discussed.

The present study is based on the evaluation of antioxidant potential of a well known plant Lactuca sativa. Methanolic leaf extract was investigated for in vitro inhibition of oxidative damage induced by UV-radiations to the salmonella typhi bacteria and in vivo effect on the production of body enzymes i.e. catalase and superoxide dismutase. The lipid peroxidation masurement was also done in terms of thiobarbituric acid reactive substances (TBARS) in blood and brain of male albino wistar rats. The plant extract has shown significant antioxidant potential both in vitro and in vivo.

The present communication reports some medicinal plants which are used as Central Nervous System sedative agent in the traditional system of medicine.

Ethanolic extract of roots and aerial parts of Achyranthes aspera was investigated for its antibacterial activity against Bacillus subtilis, Bacillus pumilus, and Proteus vulgaris and anti fungal activity against Cryptococcus neoformans, Aspergillus flavus at 100 mg/disc using diffusion method. The comparative studies shown that ethanolic extract of roots and aerial parts of Achyranthes aspera have exhibited moderately equal action when compared to Cotrimoxazole (30 mg/disc) for antibacterial and Clotrimazole (30 mg/disc) for antifungal activity. Our findings confirm the traditional therapeutic claims for this herb.

The macroscopic characters of L. lavandulaefolia, physical constant values, behaviour on treatment with different chemical reagents, fluorescence characteristics after treatment with different chemical reagents of the powder of L. Lavandulaefolia were studied to fix some pharmacognostical parameters. Preliminary phytochemical studies and TLC characterization of different extractives has also been performed. These studies will help in future for identifying the plant for further research.

The Macroscopic character of the leaves ash values, extractive values, behaviors on treatment with different chemical reagents, fluorescence characters under ultra violet light after treatment with different chemical reagents of the powdered leaves of ficus racemosa Linn (fam. Moraceae) were studied to fix some pharmacognostical parameters. Preliminary phytochemical studies on different extractives of the leaves were also performed. These studies will help in future for identifying this plant for further research.

Tinctures of Ficus racemosa Linn leaves were prepared by maceration process. 70% alcohol of 21 days maceration showed maximum total solid 2.07% deep greenish brown colour and of 7.1 pH.

Various strength of alcohol were utilized for the preparation of tincture of asparagus racemosus roots by maceration for 7, 14 and 21 days. 50% (V/V) alcohol after 21 days of maceration showed maximum yield of total solid. The tinctures were evaluated by studying their different physico-chemical characteristics along with thin-Layer chromatography.

Nelumbo nucifera Gaertn (Family- Nymphaeaceae) is a well known plant in ancient medical sciences, Much research have been done on the leaves, flowers, seeds and rhizomes of the plant, Our present aim is to review all the work performed on the plant to get a clear idea to evaluate its various medicinal principles relating to phytochemical pharmacological microbiological and allied approaches.

The macroscopic character of the roots physical constant values, extractive values, behaviour on treatment with different chemical reagents, fluorescence characters under ultra violet light after treatment with different chemical reagents of the powdered roots of Asparagus racemosus Willd, (Fam. Liliaceae) were studied to fix some pharmacognostical parameters.

The macroscopic character of the leaflets ash values extractive values by different solvent extractive behavior on treatment with different chemical reagents fluorescence characters by treatment with different chemical reagents of the powdered leaves of Maoringa oleifera lam (fam moringaceae) were studied to fix some pharmacognostical parameters, chemical group test of different extracts of the leaves were also performed.

A fraction of leaf extract isolated from leaves of Azadirachta indica (Meliaceae) was tested for lowering of blood cholesterol level in rats. The extract at a dose of 200 mg/kg i.p. significantly lowered the blood cholesterol level in test animals.

The ethnolic extract of the leaves of Moringa oleifera Lam. (Fam. Moringaceae) was tested for antimicrobial activities against Gram Positive – Bacillus cereus, Bacillus subtilis Staphylococcus aureus, Sarcina lutea: Gram negative – Escherichia coli and Acid fast Mycobacterium phlei. Significant antimicrobial activity of the extract was found in this study.

The hepatoprotective activity of a fraction of the leaf extract of A.indica against carbon tetrachloride : liquid paraffin (1:1) induced liver damage in rats at doses of 100 mg/kg and 200 mg/kg was evaluated. A significant dose dependent hepatoprotective activity was evidenced by lowering of the elevated levels of glutamate oxaloacetate transaminase (GOT), glutamate pyruvate transaminase (GPT), acid phosphatase (ACP) and alkaline phosphatase (ALP) in the serum of CCl4 : liquid paraffin (1:1) treated rats.