background: lipase is an enzyme with immense application potential. ester synthesis by lipase catalysis in organic media is an area of key industrial relevance. enzymatic preparations with traits that cater to the needs of this function are hence being intensely researched. objective: the objectives of the study were to immobilize the lipase from bacillus sp. ps35 by cross-linking and adsorptio...

Kanemite was readily prepared and used as solid base catalyst for transesterification of sunflower oil to fatty acid methyl ester (FAME). The catalyst was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 adsorption-desorption and field emission scanning electron microscopy (FESEM) techniques. Central Composite Design (CCD) coupled with Response Surfac...

Plants of the genus Taraxacum Wigg., have long been used as medicinal herbs. A phytochemical investigation of the aerial parts of Taraxacum bessarabicum (Hornem.) Hand.-Mazz. subsp. bessarabicum (Hornem.) Hand.-Mazz. (Asteraceae) yielded two coumarins [esculetin (1), cichoriin (2)], three flavonoids [ luteolin (3), luteolin 7-O-β-D-glucoside (4), gossypetin (5)] and six phenolic acids and their...

Ethanolic leaf extract of Hyptis capitata Jacq. showed a toxic effect on Artemia salina larvae1. The was simplified through fractionation using vacuum liquid chromatography to trace compounds with biological activity. F1, F2, F3 and F4 fractions were used in the acute toxicity test A. larvae. F1 highest value 196.77±2.7 µg/ml. As an initial screening for its anticancer potential, ethanolic frac...

Background: Lipase is an enzyme with immense application potential. Ester synthesis by lipase catalysis in organic media is an area of key industrial relevance. Enzymatic preparations with traits that cater to the needs of this function are hence being intensely researched. Objective: The objectives of the study were to immobilize the lipase from Bacillus sp. PS35 by cross-linking and adsorpti...

in order to compare the impact of vegetable oils to improve the efficacy of mesosulfuron-methyl + iodososulfuron - methyl + mefenpyr (atlantis)®, a greenhouse experiment of dose-response as factorial experiment in a completely randomized design including concentration 0, 3/75, 7/5, 15, 22/5, and second factor 30 g a.i. ha-1 of atlantis at 13 levels of with and without vegetable oils (each of tw...

N-Benzyloxycarbonyl derivatives of isoglutamine and isoasparagine were coupled with arginine methyl ester through the action of dicyclohexylcarbodiimide. The resulting benzyloxycarbonyl derivatives of isoglutaminylarginine methyl ester and isoasparaginylarginine methyl ester were treated with trypsin for removal of the ester groups and then with porcine pancreatic carboxypeptidase B for liberat...

The addition of co-solvent on in situ trans esterification was considered as one method to improve the extractive process and increase yield biodiesel from microalgae. In this study, with using microwave studied for improving performance produced compared without addition. optimal reaction conditions (ratio microalgae methanol 1:15 w /v; 30 ml % H2SO4) at 50 min time, Fatty Acid Methyl Ester (F...