Posted by admin on Dec 1, 2011 in |
Ventilago calyculata (Rhamnaceae) commonly known as Pitti. Ventilago calyculata is present in hotter parts of India, Burma, Siam, China, in forest region. The plant is antimalarial, Antiviral, stomachic, skin disorder. Phytochemical studies had revealed the presence of flavonoids, triterpenoids, tannin, naphthoquinone, anthraquinone. Present study was carried out to determine, the morphological, microscopical and phytochemical profiles. Microscopy show thick unicellular covering trichomes, vein islet no.-3, vein termination no.-6, Anomocytic type stomata, lignifed, xylem, etc. The physical parameter such as moisture content, ash value and extractive value were...
Read More
Posted by admin on Dec 1, 2011 in |
Mosquitoes transmit serious human diseases causing millions of deaths every year. Phytochemistry has proven that there are potential mosquito control agents and also alternatives to synthetic insecticides. The present paper reports Ageratum conyzoides commonly known as Kubhi in Hindi of family Astereacae. The plant after proper identification was collected shade dried and powdered to the fine mesh size. 5 different concentrations were used against IInd and IVth instar of Anapheles stephensi. Larvicidal and growth inhibitory activity of Ageratum conyzoides exhibited in the II and IVth instar larvae of the Anapheles stephensi. After 24 hours, LC50 value was determined using probit analysis method. It was notice that the LC50 value for IInd and IVth instar larvae were 238.65 and 228.54 ppm respectively. The result indicate that fourth instar larvae are more susceptible then second instar larvae .the result obtained suggest that bioactive compound of Ageratum conyzoides could be used in the search for new larvicidal compound of plant...
Read More
Posted by admin on Dec 1, 2011 in |
The ethanolic extracts and its different partitioning fractions of roots of Leea macrophylla (Leeaceae) were evaluated for their analgesic and preliminary cytotoxic activities. The analgesic activity was evaluated using the acetic acid-induced writhing test in mice while the screening of cytotoxic activity was done using brine shrimp lethality bioassay. In acetic- acid induced writhing test, the ethanolic extract at the dose of 200 mg/kg body weight significantly (p<0.001) reduced the number of writhes with 62.37% of inhibition when compared to the control group which was comparable to that of the standard drug diclofenac sodium (61.85% inhibition, p<0.001). The petroleum ether, carbon tetrachloride and ethyl acetate soluble fractions of the ethanolic extract at the same dose exhibited moderate anti-nociceptive activities with 36.59, 30.92 and 27.83 % inhibition of writhing compared to control, respectively. In Brine shrimp lethality bioassay, the LC50 values of the ethanolic extract and carbon tetrachloride, chloroform and ethyl acetate soluble fractions were found to be 2.39, 0.049, 4.53 and 0.09 mg/ml, respectively which were comparable to the...
Read More
Posted by admin on Dec 1, 2011 in |
Studies have been demonstrating that Vismia guianensis (Aubl.) Choisy, popularly known as seal, a species native to South America has high anticancer and antimicrobial potential. The objective of this study was to evaluate the antimicrobial activity of the ethanolic extract obtained from the leaves of V. guianensis, and trace its chemical profile. The phytochemical screening showed the presence of different phenolic compounds in the extract. The high performance liquid chromatography performed on the sub-fractions A and B from the ethyl acetate fraction traced the chemical composition profile of the ethanol extract, composed by benzophenone, xanthones and anthraquinones. The antimicrobial activity of the extract evaluated by agar diffusion method showed inhibition against Gram-positive bacteria: Streptococcus mitis (ATCC 903), Streptococcus sanguis (ATCC 10557) and Staphylococcus aureus (ATCC 6538) and the fungi: Candida albicans (ATCC 40175), Candida krusei (ATCC 40147) and Candida parapsilosis (ATCC...
Read More
Posted by admin on Dec 1, 2011 in |
Crinum latifolium L. is a rosette-like herb showing promising results as rubefacient, tonic, for treatment of allergic disorders, benign prostatic hyperplasia, cancer and others. The present study deals with pharmacognostic and preliminary phytochemical evaluation of leaves of Crinum latifolium (Amaryllidaceae). The pharmacognostical studies were carried out as organoleptic, microscopic and physical parameters such as moisture content, ash value, fluorescence analysis and extractive value were determined. For phytochemical evaluation, Crinum latifolium leaves were subjected to successive solvent extraction using petroleum ether, chloroform, hydroalcoholic solution and water. These extracts were then screened for presence of different chemical constituents. Thin layer chromatography (TLC) of the tested extracts was also performed to determine the active principles. These studies are useful in identification and chemical characterization of Crinum latifolium and to explore its phytochemical and pharmacological...
Read More
