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Chemical composition of mate tea leaves ( Ilex paraguariensis ): A study of extraction methods
Author(s) -
Assis Jacques Rosângela,
dos Santos Freitas Lisiane,
Peres Valéria Flores,
Dariva Cláudio,
de Oliveira José Vladimir,
Bastos Caramão Elina
Publication year - 2006
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/jssc.200600024
Subject(s) - maceration (sewage) , chromatography , chemistry , extraction (chemistry) , ethyl acetate , decoction , sample preparation , solvent , phytol , botany , organic chemistry , biochemistry , materials science , composite material , biology
The objective of this work was to investigate the extraction of Ilex paraguariensis leaves by means of three extraction techniques: pressurized liquid extraction (PLE, also called accelerated solvent extraction – ASE), maceration, and sonication. Samples of mate tea leaves were collected from an experiment conducted under agronomic control at Indústria e Comércio de Erva‐Mate Baro LTDA, Brazil. Six solvents with increasing polarities ( n ‐hexane, toluene, dichloromethane, ethyl acetate, acetone, and methanol) were used in this investigation. Chemical analysis of the extracts was performed by GC coupled with a mass spectrometer detector. The identification and quantification were accomplished by coinjections of certified standards. The results showed that no significant differences in the qualities of the extracts were noticed regarding the extraction methods. On the other hand, the PLE technique was found to be more effective for the extractions of caffeine, phytol, palmitic, and stearic acid. The use of PLE led to a significant decrease in the total extraction time, amount of solvent consumption, and manipulation of samples compared to maceration and ultrasound‐assisted extraction methods.