Twenty three endophytic fungi from leaf, stem and root of 0cimum basilicum (Tulshi) were isolated and purified. One of the fungi (2L-5) isolated from the leaves was fermented in a large scale and extracted with ethyl acetate. The fungal extract was found to be active against two bacteria, Bacillus cereus and Staphylococcus aureus. From the ethyl acetate extract two steroids, ergosterol and cere...

The larvicidal activity of hexane, chloroform and ethyl acetate leaf extracts of Strychnos nuxvomica against the third instar larvae of Culex quinquefasciatus was studied. The ethyl acetate leaf extract was found to be the effective larvicide with LC value of 222.28 and 146.99 ppm after 24 and 48 hours. The results indicate 50 promising larvicidal activity against Culex quinquefasciatus. Furthe...

Antioxidant activity of Avicenni marina L and Avicennia officinalis L fruit extracts in ethyl acetate, acetone, methanol and ethanol were studied by ABTS, CrO5 and FRAP method. All the extracts possessed significant amount of the antioxidant activity, extracts in methanol and ethanol was demonstrated convincingly higher antioxidant activity by all the three methods. Whereas, the ethyl acetate e...

^TV-dimethylformamide (DMF, 37 ml) was added potassium carbonate (510mg, 3.69mmol) and benzyl bromide (170^1, 1.43mmol) at room temperature (r.t.). The mixture was stirred at r.t. for 2hours and extracted with ethyl acetate (200ml) after the addition of water (200 ml). The ethyl acetate layer was concentrated under reduced pressure and the residue was chromatographedon silica gel to obtain 1,1l...

Volatile aroma-active esters are responsible for the fruity character of fermented alcoholic beverages such as beer and wine. Esters are produced by fermenting yeast cells in an enzyme-catalyzed intracellular reaction. In order to investigate and compare the roles of the known Saccharomyces cerevisiae alcohol acetyltransferases, Atf1p, Atf2p and Lg-Atf1p, in volatile ester production, the respe...

Reactive distillation processes couple chemical reactions and physical separations into a single unit operation. The ethyl acetate production by esterification reaction is equilibrium limited and is suitable to be carried out in a distillation column. In the present work, a reactive distillation column for the production of ethyl acetate is simulated using Aspen Plus. The component compositions...

In this study, the antioxidant properties of 80 % ethanol extracts of 16 species of plants from Jeju Island in Korea were evaluated using various antioxidant assays, including the DPPH (1,1-Diphenyl-2-pricrylhydrazyl) radical scavenging, superoxide scavenging, xanthine oxidase inhibition and hydrogen peroxide scavenging activities. Among the 16 plant extracts tested, CN-13 showed strong antioxi...

Hepatoprotective activity of the ethyl acetate extract of Teucrium polium L. was investigated using rats with CCl4-induced liver damage. Specific biochemical parameters (glutathione peroxidase, superoxide dismutase, reduced glutathione and total antioxidative status) were estimated in blood and in liver homogenate. Lipid peroxidation in CCl4-intoxicated rats was evidenced by a marked increment ...

The antimicrobial efficacy of methanol, ethyl acetate, chloroform and butanol extracts of fungus Chaetomium cupreum was determined by employing well diffusion and broth micro-dilution techniques. Chaetomium species are the largest genus of saprophytic ascomycetous fungus, which belongs to the class Sordariomyetes and family Chaetomiaceae. Ethyl acetate and butanol extracts exhibited antibacteri...

Viburnum grandiflorum Wall. ex DC., is a plant of Himalaya and Hazara region of Pakistan which was screened for bioactive secondary metabolite and screen for biological activity. Preliminary phytochemical profiling indicated the presence of different classes of secondary plant metabolites such as alkaloids, terpenoids, saponins, anthraquinone. These secondary metabolites vary in types in differ...