%0 Journal Article
%T Flavonoids extraction from Alpinia zerumbet (Pers.) Burtt et Smith leaves using different procedures
%A Vict¨®rio
%A Cristiane P.
%A Lage
%A Celso Luiz S.
%A Kuster
%A Ricardo M.
%J Ecl¨¦tica Qu¨ªmica
%D 2010
%I Scientific Electronic Library Online
%R 10.1590/S0100-46702010000100004
%X the current study aims to verify the best method for a rapid and efficient extraction of flavonoids from alpinia zerumbet. dried leaves were extracted using distillated water and ethanol 70% by extraction methods of shaking maceration, ultrasonic, microwave and stirring. by the application of tlc and reversed-phase hplc techniques the rutin and kaempferol-3-o-glucuronide were detected. ethanol 70% was more efficient for flavonoids extraction than water. no significant yielding variation was verified for ultrasonic, microwave and stirring methods using ethanol 70% (11 to 14%). relative concentration of rutin and kaempferol-3-o-glucuronide, respectively, was higher by ultrasonic (1.5 and 5.62 mg g-1 dried leaves) and by microwave (1.0 and 6.64 mg g-1 dried leaves) methods using 70% ethanol. rapid and simplified extraction proceeding optimize phytochemical work and acquisition of secondary metabolites.
%K high performance liquid chromatography
%K maceration
%K microwave
%K ultrasonic
%K zingiberaceae.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-46702010000100004&lng=en&nrm=iso&tlng=en