A rapid, sensitive method for accurate analysis of individual bile acids in biological fluids by high performance thin-layer chromatography and densitometry

1978 ◽  
Vol 11 (3) ◽  
pp. 106-111 ◽  
Author(s):  
R.W. Shepherd ◽  
P.S. Bunting ◽  
M. Khan ◽  
J.G. Hill ◽  
S.J. Soldin ◽  
...  
Keyword(s):  
Thin Layer ◽  
Bile Acids ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Biological Fluids ◽  
Accurate Analysis ◽  
Layer Chromatography ◽  
Sensitive Method

Determination of Ibuprofen and Phenylephrine in Tablets by High-Performance Thin Layer Chromatography and in Plasma by High-Performance Liquid Chromatography with Diode Array Detection

2019 ◽  
Vol 57 (7) ◽  
pp. 592-599
Author(s):  
Marwa A A Ragab ◽  
Mohamed H Abdel-Hay ◽  
Hytham M Ahmed ◽  
Sara M Mohyeldin
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Biological Fluids ◽  
Array Detector ◽  
Diode Array ◽  
Simultaneous Extraction ◽  
Layer Chromatography

Abstract Two chromatographic methods (high performance thin layer chromatography (HPTLC) and high performance liquid chromatography–diode array detector (HPLC-DAD)), were addressed for the analysis of a mixture consisted of phenylephrine hydrochloride and ibuprofen in two forms bulk and their combined dosage form. This binary mixture is considered to be a challenging one as the two drugs differ greatly in their chemical and physical properties. Not only this affects their simultaneous analysis, but also hinders their simultaneous extraction from biological fluids as plasma. That is the reason the literature lacks any report for the simultaneous extraction and analysis of these drugs from biological fluids. The concentration ranges of both drugs were 0.1–2.5 μg/spot and 0.1–100 μg/mL by HPTLC and HPLC, respectively. Not only was the HPLC-DAD method applied to the investigated drugs determination in pharmaceutical preparations, but also in spiked human plasma. Extensive study was conducted to optimize their simultaneous extraction from plasma as it was a crucial step for the in vivo analysis. The results obtained by proposed methods and a reference one were statistically comparable by analysis of variance test. No significant difference was recorded between the mean percent levels determined by the proposed methods and the reference one.

A Direct Enzymic Assay for 7α-Hydroxy Bile Acids and Their Conjugates

1973 ◽  
Vol 44 (1) ◽  
pp. 95-98 ◽  
Author(s):  
G. A. D. Haslewood ◽  
G. M. Murphy ◽  
Judith M. Richardson
Keyword(s):  
Thin Layer ◽  
Bile Acids ◽  
Thin Layer Chromatography ◽  
Biological Fluids ◽  
Hydroxysteroid Dehydrogenase ◽  
Layer Chromatography ◽  
Enzymic Assay ◽  
Bile Acids And Salts ◽  
Secondary Bile Acids

1. A 7α-hydroxysteroid dehydrogenase preparation isolated from a strain of Escherichia coli provides a specific and rapid means for the determination of 7α-hydroxy bile acids and their conjugates. 2. When used in conjunction with 3α-hydroxysteroid dehydrogenase the method enables the concentrations of primary and secondary bile acids and salts in biological fluids to be determined directly without the use of thin-layer chromatography. 3. When used with thin-layer chromatography the method allows the specific quantitative determination of chenodeoxycholic acid or its conjugates in the presence of deoxycholic acid and its derivatives.

scholarly journals Determination of individual bile acids in biological fluids by thin-layer chromatography and fluorimetry

1970 ◽  
Vol 23 (4) ◽  
pp. 309-314 ◽  
Author(s):  
D. Panveliwalla ◽  
B. Lewis ◽  
I. D. P. Wootton ◽  
S. Tabaqchali
Keyword(s):  
Thin Layer ◽  
Bile Acids ◽  
Thin Layer Chromatography ◽  
Biological Fluids ◽  
Layer Chromatography
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