Hexane, ethyl acetate and methanol extracts of Onopordum espinae leaves were investigated for their antibacterial activities against Bacillus cereus, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa and Salmonella enteritidis. The in vitro antibacterial activity of Onopordum espinae extracts was qualitatively assessed by the diameter of inhibition zones (IZ...

Accurate vapor-liquid equilibrium data have been obtained for ethyl acetate + 2-propanol and ethyl acetate + ethanol mixtures at 84.8 kPa, and the results are discussed thermodynamically. The vapor-liquid equilibrium data are correlated with redlich-Kister, Margules, Van-Laar and Ortega, equations the parameters and standard deviation of which are calculated and reported. The best correlati...

Reactive distillation is the combination of reaction and separation in a same column. It is an attractive option whenever liquid phase reactant is in large excess. The energy requirement of the conventional column is very high and requires large recycling costs. RD column works close to the stoichiometric feed conditions thereby eliminating recycling costs and increases the efficiency of the co...

The present study was carried out for preliminary phytochemical screening for ten principle bioactive compounds in Petroleum ether, chloroform, ethyl acetate and ethanol extracts of roots of Memecylon edule collected from potheri forest, Kattankulathur in Tamilnadu. Chloroform and ethyl acetate extracts of seeds of Memecylon edule were also investigated against ten bacteria using disc diffusion...

A diploid and a haploid strain of Pichia anomala were tested for their biocontrol ability against the spoilage mould Penicillium roqueforti in glass tubes filled with grain at two water activities (aw). At aw 0.98, the two yeast strains grew and inhibited mould growth equally well and showed similar patterns of ethyl acetate production, reaching maximum values of 10-14 microg ml(-1) headspace. ...

In the present study, ethyl acetate, butanol and aqueous fractions derived from total methanol extract of Butea monosperma flowers were evaluated for radical scavenging activities using different in vitro models like reducing power assay, scavenging of 2,2 diphenyl-1-picrylhydrazyl (DPPH) radical, nitric oxide radical, superoxide anion radical, hydroxyl radical and inhibition of erythrocyte hem...

The ethanol extract of Tephrosia purpurea Linn. (Family: Leguminosae) was found to significantly inhibit the carbon tetrachloride-induced lipid peroxidation in vivo and superoxide generation in vivo. The ethyl acetate fraction of the same extract was studied for free radical scavenging and antilipid peroxidation activity. The IC 50 values in both of these in vitro assays were found to be signif...

The antioxidant property of the 70% aqueous ethanol extract of Phyllanthus amarus roots and its ether-soluble, ethyl acetate-soluble, and aqueous fractions were investigated by various in vitro assays. The root extracts showed higher DPPH, hydroxyl, superoxide, and nitric oxide radical scavenging and reducing power activity. Among all the samples, the ethyl acetate-soluble fraction demonstrated...

The present study evaluated the free radical scavenging capacity and antioxidant potential of different solvent fractions (Petroleum ether, Ethyl acetate, Butanol and Water) of methanolic extract of Cissus quadrangularis stem. Ethyl acetate fraction of Cissus quadrangularis stem possessed a high amount of total phenolic and flavonoid contents as compared to other solvent fractions. Also Ethyl a...