Cellulase (beta-1,4-glucan-glucanohydrolase EC 3.2.1.4) activity increased during abscission and was localized in the cell separation layer of Phaseolus vulgaris L. cv. Red Kidney (bean), Gossypium hirsutum L. cv. Acala 4-42 (Cotton) and Coleus blumei Benth. Princeton strain (Coleus) abscission zone explants. Cellulase activity was optimum at pH 7, was reduced by one-half after heating to 55 de...

This study aimed to assess the chemical composition of essential oils Elsholtzia blanda (Benth.) Benth. in Lam Dong Province, Viet Nam, and evaluate their biological activities. Essential obtained by hydro-distillation aerial parts E. were analyzed gas chromatography-mass spectrometry (GC-MS). Thirty-one constituents identified oil, oil was predominantly monoterpenoid, with camphor (25.14%), ca...

Within the ongoing Ebola outbreak in West Africa, separate scenarios reflect old contexts with well-known strategies to face the epidemic on one side and completely new and unprecedented situations requiring new approaches on the other side. While Senegal and Nigeria represent success stories on the implementation of appropriate standard public health measures for containment, Liberia, Sierra L...

High-speed counter-current chromatography (HSCCC) with a two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water system (5:5:7:5, v/v) was applied to the isolation and purification of alkaloids from the Chinese medicinal plant Evodia rutaecarpa (Juss.) Benth. Five kinds of alkaloids were obtained and yielded 28 mg of evodiamine (I), 19 mg of rutaecarpine (II), 21 mg of evocar...