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A quantitative method for the analysis of xanthine alkaloids in Paullinia cupana (guarana) by capillary column gas chromatography
Author(s) -
Pagliarussi Renata S.,
Freitas Luís A. P.,
Bastos Jairo K.
Publication year - 2002
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/1615-9314(20020401)25:5/6<371::aid-jssc371>3.0.co;2-9
Subject(s) - chromatography , xanthine , chemistry , caffeine , gas chromatography , quantitative analysis (chemistry) , capillary gas chromatography , capillary action , ethanol , biochemistry , materials science , medicine , enzyme , composite material , endocrinology
The aim of the present study was to develop a capillary gas chromatography method for the quantitative analysis of caffeine in Brazilian guarana as seed powder, dried crude ethanol extracts, and lyophilized water extracts with the addition of 7β‐Hydroxyethyltheophylline as the internal standard. The experimental protocol, the conditions, the analytical instrumentation, the recovery studies, as well as the analysis of seven different commercial batches of guarana, are presented and discussed.