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|Development and application of a capillary electrophoresis method for the determination of ellagic acid in E. globulus wood and in filtrates from E. globulus kraft pulp
|Costa, Elisabete V.
Lima, Diana L. D.
Evtyugin, Dmitry V.
Esteves, Valdemar I.
|A capillary zone electrophoresis (CZE) method for simple and rapid determination of ellagic acid (EA) in Eucalyptus globulus wood and in the filtrate from unbleached kraft pulp has been developed. This is the first application of CZE for the detection of EA in industrial streams from cellulosic pulp production. The EA determinations in wood extractives and in pulp filtrates were succeeded only after sample acidification. This new CZE analytical procedure allowed reliable determinations of EA in E. globulus wood (1.1 ± 0.6 g kg-1 of dry wood) and in the filtrates from unbleached kraft pulp (98 ± 0.7 mg L-1). Gas chromatography-mass spectrometry was used as a reference method for the quantification of EA in industrial samples.
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