تم في هذا البحث إيجاد طريقة كروماتوغرافية مطورة باستخدام تقنية الكروماتوغرافيا السائلة عالية الأداء High performance liquid chromatography) HPLC ) للتحديد الكمي للكولسترول في بعض الأغذية. تمت دراسة أفضل الشروط للتحليل بما فيها نسب مكونات الطور المتحرك و درجة الحرارة و تدفق الطور المتحرك, و طول موجة كاشف UV-VIS, إضافة إلى درجة حموضة الوسط. توصلنا إلى إمكانية تحديد الكولسترول بفصله على عمود كروماتوغرافي (C18(5μm,250x4.6mm بحجم محقون قدره 20μL, مستخدمين الميتانول % 100 كمذيب.
The purpose of this article is how to use HPLC technique for
quantitive analysis of cholesterol in some foods. The best conditions
are studied for this analysis including composition of mobile phase,
temperature, flow rate, the wavelength of detector UV-VIS, and
acidity of mobile phase. The column used for cholesterol
determination by this method was: C18(5μm,250x4.6mm) with
injection volume of 20μL. Methanol 100% was used as mobile
phase.
References used
DAVID.H, 2000- Modern Analytical Chemistry, Journal of International Edition-North America
UFFE Ravnskov. M. D, 2000- The Cholesterol Myths, New Trends –Washington
DENNIS. E, VANCE. H, VAN. D.B, 2000- Journal of Biochimica et BiophysicaActa (BBA),1529 (1-3), 1-8
spectrophotometric and chromatographic methods was used for
determination of five water-soluble vitamins, including : Thiamine
HCl (B1), Ascorbic acid (VC), Niacinamide (PP), Cyanocobalamin
(B12), Riboflavin (B2) in this research.
The conditions
The purpose of this article is how to determine simultaneously the content of
some Anti-Inflammatory (NSAIDS):, Ketoprofen, Flurbiprofen, Orphenadrine
Citrate (Muscle relaxant( and Clopidogrel Bisulfate (Anti-thrombocytopenia( in
pure and pharmace
The purpose of this article is how to use HPLC technique for analysis of
some vitamins. The studied vitamins are niacinamide (vit.PP), pyridoxine
hydrochloride (vit.B6), riboflavin (vit.B2) and thiamine hydrochloride (vit. B1),
which can be found
The possibility to develop a High-Performance Liquid
Chromatographic method was studied for simultaneous
determination of: Cu(II), Ni(II), Co(II), Hg(II) by using DTC as
reagent. The diethyldithiocorbamate Reagent was studied by
spectrophotometric Method, Unique Ionisation Constant was
determined and its value.
An HPLC separation of the geometric isomers of β-carotene was developed
to evaluate the Provitamin A content of Palm oil . Different stationary phases
were studied, the best separation of all-trans-, 9-cis- and 13-cis-β-carotene were
obtained with