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Register a new userSeparation and assay mixtures of vitamins using some analytical methods derivative spectrophotometric-chromatographic
فصل ومقايسة مزائج مكونة من عدة فيتامينات باستخدام طرائق تحليلية متنوعة طيفية اشتقاقية كروماتوغرافية
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Added by
Damascus University رسالة ماجستير
Publication date
2014
fields
Pharmacy
and research's language is
العربية
Created by
Shamra Editor
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تحدثنا في هذه الدراسة عن أهمية الفيتامينات كمتممات غذائية أو مواد دوائية و وظيفتها الحيوية في الجسم كتمامات إنزيمية لبعض التفاعلات الحيوية في الجسم والأمراض الناجمة عن عور فيتامين ما . وبسبب الاستخدام الشائع للأشكال الصيدلانية الحاوية على الفيتامينات و إنتاجها الضخم من قبل شركات تصنيع الدواء فقد هدفت الدراسة إلى إيجاد طريقة تحليلة لفصل ومقايسة أي فيتامين ضمن أمزجته دون استخدامات ضخمة للمحلات.
In this study, we talked about the importance of vitamins as nutritional supplements or medicinal substances and their vital function in the body as enzymatic complements of some vital reactions in the body and diseases caused by a vitamin deficiency
References used
jeremy B, stryer L, john L. Biochemistry . W.H. (2006) Freeman Company
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In this article, powerful approximate analytical
methods, called Adomian decomposition method and
variational iteration method are introduced and applied to
obtaining the approximate analytical solutions for an
important models of linear and non-
linear partial differential
equations such as ( nonlinear Klein Gordon equation -
nonlinear wave equation - linear telegraph equation -
nonlinear diffusion convection equation ) .
The studied examples are used to reveal that those methods are
very effective and convenient for solving linear and nonlinear
partial differential equations .
Numerical results and comparisons with the exact solution are
included to show validity, ability, accuracy, strength and
effectiveness of those techniques.
معادلة الموجة
wave equation
طريقة تفريق أدوميان
طريقة التكرار التغايري
حدودية أدوميان
معادلة كلاين غوردن
معادلة التلغراف
معادلة الانتشار الحراري
Adomian Decomposition Method
Variational Iteration Method
Adomian Polynomial
Klien Gordon equation
Telegraph equation
Diffusion Convection equation
المزيد..
Tylosin and Spiramycin are medium-spectrum macrolide antibiotic used exclusively in veterinary medicine for the treatment of a wide range of infections.This research deals with the determination of optimal conditions for simultaneous separation and d
etermination of two macrolides antibiotics (Tylosin and Spyramicine), using C8 and C18 Chromatographic separation columns and doing the comparison between them in order to develop a rapid and sensitive method which can be used to measure these two compounds using High Performance Liquid Chromatography – Diode array detector (HPLC-DAD).
This study has used the gradient elution for mobile phase and revealed that the best conditions for separation and determination are conjugated with the best retention times and best areas for both studied compounds using a mobile phase consisted of an aqueous solution of anhydrated disodium Hydrogen Phosphate at pH=2.4 and an organic solution of acetonitrile with a ratio of 80:20v/v (solution A) and acetonitrile (solution B) [Na2HPO4(0.04M) pH:2.4/CAN (80:20v/v)]/ ACN, temperature 40°C for both columns, flow ratio of 1ml/min. for the mobile phase and maximum absorption wave length 280 nm, 232nm for Tylosin and Spyramicine respectively. The best peak areas are recorded as 5.759, 5.927 for Tylosin and Spyramicine 0.10ppm respectively, using C8 Chromatographic separation column in comparison with the best peak areas 4.432, 4.212 respectively at the same concentration using C18 Chromatographic separation column. It was noticed that the best retention times for Tylosin and Spyramicine were 7.013, 4.214min. respectively at concentration of 0.10ppm using C8 Chromatographic separation column in comparison with the best retention times 7.641, 5.898min. respectively at the same concentration using C18 Chromatographic separation column. The calibration curves for both separated compounds on C8 Chromatographic separation column showed a good linearity within a concentration range of 0.0010-0.10 ppm ≈ 1-100ppb at the two wave lengths λmax. = 280, 232nm respectively.
The history of medicine using medicinal plants goes back thousands of years, and according to the reports of the World Health Organization, many of the world's people mainly use the plant to treat many diseases, and one of the plants that is famous for its widespread use is the leaves of Ginkgo biloba.
Most epeliptic patients undergo treatment with the
anticonvulsive drugs, the most important of which is
phonation. The treatment may last for their life time. So
it should be insured to get the right theraputic dose to
reach and keep the optimal
phenytoin concentration in
the circulating body fluid (١٥ -٢٠ ug/ml). Althought
this patient should be under control in order to avoid
liver damage or the incidence of toxicity of over dose of
phenytoin (as a result of long term treatment
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
of chromatographic separation were reached to the
vitamins with good resolution.
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