نتایج جستجو برای: high performance liquid chromatography hplc

تعداد نتایج: 3053299  

Journal: :iranian journal of pharmaceutical research 0
effat souri department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran, iran. ali hatami department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran, iran. nazanin shabani ravari department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran, iran. farhad alvandifar department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran, iran.

a stability indicating high-performance liquid chromatography (hplc) method wasvalidated and used to study the degradation of cetirizine dihydrochloride in acidic and oxidativeconditions. the separation was carried out on a symmetry c18 column and a mixture of 50 mmkh2po4 and acetonitrile (60:40 v/v, ph = 3.5) was used as the mobile phase. the method waslinear over the range of 1-20 μg/ml of ce...

Journal: :research journal of pharmacognosy 0
m. bozorgi department of traditional pharmacy, faculty of traditional medicine, tehran university of medical sciences, tehran, iran. gh. amin department of pharmacognosy, faculty of pharmacy, tehran university of medical sciences, tehran, iran. s. kasebzade pharmaceutical sciences branch, islamic azad university, tehran, iran. m. shekarchi food and drug laboratory research center, food and drug control laboratories, moh and me, tehran, iran.

background and objectives:drimia maritima (l.) stearn also known as squill is a medicinally important plant that has been used for various ailments such as dropsy, respiratory disorders, jaundice and epilepsy from ancient times. proscillaridin a is identified as one of the most effective compounds in the plant with remarkable pharmacological features including efficacy against congestive heart ...

Journal: :iranian journal of pharmaceutical research 0
parvin parsaei department of chemistry, islamic azad university, north tehran branch, tehran, iran manouchehr bahmaei department of chemistry, islamic azad university, north tehran branch, tehran, iran. alireza ghannadi school of pharmacy and pharmaceutical sciences and isfahan pharmaceutical research center, isfahan university of medical sciences, isfahan, iran.

dispersive liquid-liquid microextraction method (dllme) combined with high-performance liquid chromatography-ultraviolet detection (hplc-uv) was used to determine thiamine (b1), nicotinamide (b3) and pyridoxine (b6) in sour cherry juice. this method was rapid, simple and sensitive. separation was accomplished using a c18 column. the optimum chromatographic conditions were found to be: mobile ph...

Journal: :تحقیقات نظام سلامت 0
رویا السادات مدنی دانشجوی کارشناس ارشد، گروه علوم و صنایع غذایی، واحد شهرضا، دانشگاه آزاد اسلامی، شهرضا، ایران زهرا اسفندیاری دکتری تخصصی علوم و صنایع غذایی، واحد تحقیق و توسعه، معاونت غذا و دارو، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران محمد سراجی استاد، گروه شیمی، دانشکده شیمی، دانشگاه صنعتی اصفهان، اصفهان، ایران

background : doogh is a fermented beverage in which microbial spoilage is possible. benzoic acid and its salt (sodium benzoate) are added to doogh as antimicrobial preservative to control microbial spoilage. however, the use of this preservative has been prohibited in milk and dairy products such as food and drug administrationand institute of standards and industrial research of iran. thus, th...

Journal: :iranian journal of pharmaceutical research 0
s esmaeili f naghibi m mosaddegh n nader

a high performance liquid chromatography method was studied for determination of 18 ?-glycyrrhetinic acid in glycyrrhiza glabra l. (licorice) extract. the operating condition were c-18 reversed phase column (vp-ods, (250×4.6 mm, 5 mm)) at room temperature, acetonitril/phosphoric acid (3/1) as mobile phase, at flow rate of 0.6ml/min (0-8min), 0.4ml/min (8-20min) and uv detection at 230 nm. the r...

Journal: :nutrition and food sciences research 0
mohammad faraji faculty of food industry and agriculture, department of food science & technology, standard research institute (sri), karaj p.o. box 31745-139, iran farzaneh rahbarzare bdepartment of food science and technology, faculty of science and innovative technology, islamic azad university of pharmaceutical sciences, tehran, iran

background and objectives:  high concentration of preservatives in food may result in gastrointestinal disturbances whereby some patients suffering from asthma, rhinitis, or urticaria. the aim of this study is the introduction and optimization a new method for simultaneous determination of four preservatives (sb, ps, mp, pp) in foodstuff by high performance liquid chromatography. materials and ...

2017

Submit Manuscript | http://medcraveonline.com Abbreviations: NMR: Nuclear Magnetic Resonance; HPLC: High Performance Liquid Chromatography; RP-HPLC: Reverse Phase High Performance Liquid Chromatography; HPTLC: High Performance Thin Liquid Chromatography; TLC: Thin Liquid Chromatography; API’s: Active Pharmaceutical Ingredient’s; LOD: Limit of Detection; LOQ: Limit of Quantitation; FTIR: Fourier...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده دامپزشکی 1394

این مطالعه با هدف بررسی رخداد و غلظت باقیمانده‏ی برخی آنتی‏بیوتیک‏ها در تخم مرغ‏های اخذ شده از گله‏های مرغ تخمگذار مناطق مختلف جغرافیایی ایران (مرکز، شمال غرب، شمال و شرق)، انجام گرفت. رخداد تتراسایکلین‏ها، تایلوزین، نئومایسین و کلرامفنیکل در 137 نمونه تخم مرغ با استفاده از روش الایزا (elisa) بررسی شد و جهت آزمون تائیدی از روش کروماتوگرافی با کارآیی بالا (high performance liquid chromatography;...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1994
seyed abbas shojaosadaty andy lyddiatt

the efficacy of activation methods and coupling were studied in the context of performance in batch and fixed bed binding experiments utilizing cell culture fluids or blood plasma as feedstock. conclusions were drawn regarding selection of solid phase according to pore size, rigidity, ph stability, chemistry of derivation and activation, and gross concentration of immobilized ligand required fo...

Journal: :avicenna journal of medical biotechnology 0

background: a simple and sensitive high performance liquid chromatography-electrospray ionization mass spectrometry method has been evaluated for the assignment of clonidine hydrochloride in human plasma. methods: the mobile phase composed of acetonitrile-water 60:40 (v/v) and 0.2% formic acid 20 µl of sample was chromatographically analyzed using a repacked zorbax-xdb-ods c18 column (2.1 mmx30...

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