نتایج جستجو برای: acid hydrolyzation
تعداد نتایج: 747511 فیلتر نتایج به سال:
از آنجا که دانه ی گیاه خرفه منبع غنی ای از اسید های چرب ضروری میباشد لذا نیازمند روشی کارامد جهت استخراج بهینه این اسیدهای چرب میباشیم.با توجه به مزایای روش استخراج با سیال فوق بحرانی شامل سرعت استخراج,گزینش پذیری و کنترل حلالیت,اثر پیش تغلیظ کنندگی, کمی بودن استخراج,تمیزی و ایمنی, دمای پایین ,سادگی ,صرفه جویی در هزینه و قابلیت ادغام با تکنیک های دیگراین روش جدید استخراج برای استخراج اسیدهای چر...
چکیده در این پایان نامه، در ابتدا از واکنش بین پالادیم استات و آلیزارین زرد gg کمپلکس دو هسته ای ارتوپالادیت [pd{? 2(c,n) -{5-(3-nitrophenylazo) salicylic acid}}(µ-oac)]2 (1) ستنز شد. از واکنش این کمپلکس دو هسته ای ارتوپالادیت (1) با لیگاند های تک دندانه تری فنیل فسفین (pph3)، 6،4،2-تری متیل-پیریدین(me3py) کمپلکس های تک هسته ای (2)، (3) سنتز شدند. همچنین از واکنش بین پالادیم استات و آلیزارین ز...
introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...
As prodrugs series of new sartan-derived molecules were designed, synthesized, and evaluated. Most the synthesized compounds could decrease blood pressure efficiently in spontaneously hypertensive rats. It be ratiocinated that original drugs released from exactly at connecting position catalyzed by hydrolyzation enzymes. The maximal response mean (MBP) lowered 70.2 ± 5.0 mmHg (compound I1) 61.2...
As one of the most effective biosurfactants reported to date, lipopeptides exhibit attractive surface and biological activities have great potential serve as biocatalysts. Low yield, high cost production, purification hinder large-scale applications lipopeptides. Utilization waste materials low-cost substrates for growth biosurfactant producers has emerged a feasible solution economical product...
Alkaline and alkaline earth metal complexes of P,P'-diacetyl- (L1(2-)); new P,P'-dipropanoyl- (L2(2-)) and P,P'-dibenzoyl(dichloromethylene)bisphosphonates (L3(2-)) and their hydrolysis products were prepared and characterized using the single-crystal X-ray diffraction technique and spectroscopy, with the intention of studying the hydrolysis and coordinating properties of these potential prodru...
a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...
Due to their unique biochemical composition, sea cucumbers are highly prized marine echinoderm species. One of most important properties is that they contain a high amount collagen in body wall. In this study, the relationship between and pepsin-solubilized yields from Holothuria tubulosa poli morphometric parameters were investigated.
 Collagen range 10.63–16.04% for H. 7.12–13.10% poli. ...
In order to increasing of hydroxy functionality of HTPB an in-situ nitroxide mediated polymerization (NMP) of 1,3-butadiene was carried out in presence of TEPA as a polyfunctional nitroxide precursor. The multi-modal molar mass distribution of the product was elucidated by reductive hydrolyzation of the oligomeric product. The new polyfunctional hydroxyl-terminated polybutadiene (PFHTPB) was c...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید