Determination of Theaflavins Including Methylated Theaflavins in Black Tea Leaves by Solid-Phase Extraction and HPLC Analysis

2007 ◽  
Vol 55 (18) ◽  
pp. 7252-7257 ◽  
Author(s):  
Masami Nishimura ◽  
Kinuko Ishiyama ◽  
Akiko Watanabe ◽  
Setsuko Kawano ◽  
Toshio Miyase ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Hplc Analysis ◽  
Solid Phase ◽  
Black Tea ◽  
Phase Extraction ◽  
Tea Leaves

HPLC Analysis of 6-Mercaptopurine and Metabolites in Extracellular Body Fluids

1988 ◽  
Vol 25 (5) ◽  
pp. 504-509 ◽  
Author(s):  
J L Rudy ◽  
J C Argyle ◽  
N Winick ◽  
P Van Dreal
Keyword(s):  
Cerebrospinal Fluid ◽  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Individual Variation ◽  
Simultaneous Measurement ◽  
Hplc Analysis ◽  
Solid Phase ◽  
Phase Extraction ◽  
Hplc Assay

A convenient HPLC assay, which allows for the simultaneous measurement in extracellular fluids of 6-mercaptopurine and four of its metabolites, 6-thioguanine, 6-mercaptopurine riboside, 6-thioxanthine and 6-thiouric acid is described. Solid phase extraction allows for the clean isolation of analytes from plasma, urine or cerebrospinal fluid. The simultaneous determination of 6-mercaptopurine and some of its major metabolites in extracellular fluids may contribute to the monitoring of patient compliance, bioavailability, and individual variation in metabolism and absorption.

Determination of Ochratoxin A in Italian Red Wines by Molecularly Imprinted Solid Phase Extraction and HPLC Analysis

2014 ◽  
Vol 62 (22) ◽  
pp. 5220-5225 ◽  
Author(s):  
Cristina Giovannoli ◽  
Cinzia Passini ◽  
Fabio Di Nardo ◽  
Laura Anfossi ◽  
Claudio Baggiani
Keyword(s):  
Solid Phase Extraction ◽  
Ochratoxin A ◽  
Hplc Analysis ◽  
Solid Phase ◽  
Phase Extraction ◽  
Red Wines ◽  
Molecularly Imprinted
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