نتایج جستجو برای: hyoscyamus niger l
تعداد نتایج: 628134 فیلتر نتایج به سال:
There is no report on the antimicrobial effects of evening primrose (Oenothera biennis L.) and borage (Echium amoenum Fisch. & C.A.Mey.). In this research, the seeds of these plants were milled and extracted by chloroform:methanol (2:1). Then, the solvents were evaporated under reduced pressure and temperature to extract the oils. Antimicrobial effects of various concentrations of the oils (10-...
Two new diketopiperazine derivatives, bacillusamides A (1) and B (2), have been isolated from the EtOAc extract of the sea urchin-derived Bacillus sp. along with the known cyclo(-L-pro-L-val-) (3), cyclo(-L-pro-L-tyr-) (4), cyclo(-L-pro-L-phe-) (5). These structures were elucidated by extensive spectroscopic methods. Furthermore, the absolute configurations of the amino acid residues were deter...
Four enzyme preparations produced by fungal species belonging to different genera (Aspergillus niger, Corynascus sp., Penicillium verruculosum, Trichoderma reesei) were used for synthesis of disaccharides by D-glucose (60% w/v) condensation catalyzed by -glucosidase. Effects of pH and temperature on the disaccharide synthesis were studied, and glycoside linkage patterns for enzymes from differe...
مقدمه و هدف: کولکس پشه غالب در بسیاری از کشورهای گرمسیری است که باعث تب فیلاریایی می شود. یکی از ساده ترین روش ها برای پیشگیری از این بیماری از بین بردن ناقل آن است. بدین منظور این مطالعه با هدف مقایسه اثر لاروکشی عصاره بخش های هوایی گیاه بنگ دانه و خرزهره بر لارو این حشره انجام گردید. مواد و روش ها: پس از جمع آوری و خشک شدن بخش های هوایی این دو گیاه، با استفاده از حلال متانول و دستگاه روتاری ...
The comparative effectiveness of remediating water polluted with crude oil, using environment-friendly bacteria (Pseudomonas aeruginosa) and fungi (Aspergillus niger) were investigated. samples separately treated Aspergillus niger Pseudomonas aeruginosa. bioremediation kinetic efficiency for these systems was studied. At the end periods, oil grease content decreased from 47.0 mg/L in untreated ...
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