C.halicacabum  is wide spread in tropical and sub-tropical Asia and Africa. Our laboratory results showed crude ethanolic extract of this plant exerted anti-inflammatory activity in chronic inflammatory models. In this present study, we tried to investigate the presence of anti-inflammatory compound in this extract.

The antibacterial activity of Bulbophyllum neilgherrense was tested against five species of bacteria, viz., Escherichia coli, Staphylococcus aureus, Bacillus pumilus, Pseudomonas aeruginosa and Pseudomonas putida Aqueous, ethanolic and chloroform soluble extracts of leaf and pseudobulb (5.50 w/v) were screened for their antibacterial potential. The zone of inhibition was seen to be largest when alcoholic extract was used.

Ethanolic extract of Naringi crenulata  or liminonia crenulata  leaves was investigated for Phytochemical and Antimicrobial activities. The macroscopic characteristics of leaves, physical constant values, extractive values, behavior on treatment with different chemical reagents of the powdered leaves. Naringi crenulata  were studied to fix some pharmacognostical parameters and preliminary phytochemical studies on ethanolic extracts of the leaves were also performed. Antimicrobial activities against two bacterial strains - Bacillus subtilis , Klebsilla pnemoniae  and two fungal strains Aspergillus niger, Mucor sp.  among the various leaf extracts maximum antimicrobial activity was exhibited by standard antibiotic.

The preliminary phytochemical analysis of Limonia acidissima  plant parts such as bark, leaf, rind, pulp and seed showed the presence of alkaloids, flavonoids, steroids, saponins, glycosides, phenols, gum and mucilage, fixed oils and fats, resins and tannins. Among the five plant parts, pulp possessed high amount of protein and the carbohydrate content was more in seeds and rind is rich was amino acid. The methanolic extracts of L. acidissima  plant parts were tested against Escherichia coli  and Staphylococcus aureus  using disc diffusion method. The extracts from different parts showed varying degrees of antimicrobial activity.

Antibacterial properties of hexane, chloroform and aqueous extracts of roots of Acorus calamus,Aristolochia indica,Cyperus rotundus, Desmodium gangeticum, Holostemma ada- kodien  and Kaempferia galanga , used in the traditional medicine were studied on Bacillus pumilis  and Eschericia coli  by disc diffusion method.

The diuretic activity of concentrated ethanolic extract of Aerva lanata  (Linn) & Aerva tomentosa  Forsk on healthy albino rats were studied with frusemide as reference drug. The urine output increased with concentrated ethanolic extract of Aerva lanata  only. In this case the level of electrolytes in urine also increased. But the diuretic activity was mild as compared to frusemide.

The present paper deals with the results of a preliminary survey of the wild edible plants used by different ethnic groups in the Anaimalai hills of the Western Ghats in Coimbatore district. Tribals of various ethnic groups dominate the wooded habitat of this hilly region. About 53 plants species belonging to 32 families are used as edible by the tribes. Of these, the leaves of 25 plant species are consumed as green and about 20 wild fruits are consumed raw. The rest of the plant species are used for their tubers, seeds and roots. The plant species, their families, vernacular names, parts used and their mode of usage were also reported.

The leaves and seeds of Cassia tora  (Family Caesalpinaceae) are used in the treatment of leprosy, ring worm, flatulence, colic, dyspepsia, constipation, cough, bronchitis and cardiac disorders in the Ayurvedic systems of medicine. The present study deals with the study of macroscopic characters of the leaves, ash values, extractive values, behavior on treatment with different chemical reagents and fluorescence characters under ultraviolet light. Preliminary phytochemical studies on different extractives of the leaves were also performed. These studies will help in the identification of the plant for further research.

Pharmacognostical investigations were carried out on the Erythrina indica  leaves, followed by phytochemical investigation. On the methanolic extract of leaves, TLC was performed and indole alkaloids were identified with selected solvent system. The UV analysis was also performed on the components confirming the presence of the indole nucleus. Anti-inflammatory activity was carried out on albino rats. Further, anti-inflammatory activity was compared to that of the standard drug indomethacin and percent inhibition of oedema was determined. Sedative hypnotic activity was also evaluated using pentobarbital which showed mild sedation.