Upload resources

Upload your works to SEDICI to increase its visibility and improve its impact

 

Show simple item record

dc.date.accessioned 2008-10-22T15:12:19Z
dc.date.available 2008-10-22T02:00:00Z
dc.date.issued 2004
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/6671
dc.description.abstract Sementes de guaraná [Paullinia cupana H.B.K. var. sorbilis (Mart.) Ducke], obtidas de lugares diferentes, foram analisadas quanto aos aspectos físico-químicos (perda por dessecação, teor de extrativos, teor de resíduo seco) e quanto ao teor de taninos totais e metilxantinas. A análise cromatográfica por CCD mostrou um valor de Rf = 0,43 para cafeína e 0,72 e 0,71 para catequina e epicatequina, respectivamente. A análise por CLAE apresentou, para uma fração semipurificada, tempos de retenção de catequina, epicatequina e cafeína de 6,17, 8,85 e 11,91 min, respectivamente. Assim, pode-se confirmar a qualidade e semelhança em teores químicos entre as diferentes matérias-primas vegetais. pt
dc.description.abstract Seeds of guaraná [Paullinia cupana H.B.K. var. sorbilis (Mart.) Ducke], obtained from different localities, were tested in regard to physicochemical aspects (loss on drying, determination of extracts, dry residue) and their total tannin and methylxanthine contents. TLC chromatographic analysis showed a Rf = 0.43 for caffeine and Rf = 0.72 and 0.71 for catechin and epicatechin respectively. Analysis of the semi-purified fraction by HPLC showed retention times for catechin, epicatechin and caffeine of 6.17, 8.85 and 11.91 min respectively. The quality and similarity of the chemical components of the raw material from different sources was confirmed. en
dc.format.extent 383-386 es
dc.language pt es
dc.subject Análisis Fisicoquímico es
dc.subject análises físico-químicas; controle de qualidade; paullinia cupana; sapindaceae pt
dc.subject paullinia cupana; sapindaceae; physicochemical analysis; quality control en
dc.subject Plantas Medicinales es
dc.title Controle de qualidade de amostras de Paullinia cupana H.B.K. var. sorbilis (Mart.) Ducke es
dc.title.alternative Quality control of samples of Paullinia cupana H.B.K. var. sorbilis (Mart.) Ducke en
dc.type Articulo es
sedici.identifier.uri http://www.latamjpharm.org/trabajos/23/3/LAJOP_23_3_3_1_PF6PGH71D7.pdf es
sedici.creator.person Antonelli-Ushirobira, Tânia Mara es
sedici.creator.person Yamaguti, Elza es
sedici.creator.person Uhemura, Leila Mariko es
sedici.creator.person Mello, João Carlos Palazzo de es
sedici.subject.materias Farmacia es
sedici.description.fulltext true es
mods.originInfo.place Colegio de Farmacéuticos de la Provincia de Buenos Aires es
sedici.subtype Articulo es
sedici2003.identifier ARG-FARM-ART-0000000157 es
sedici.relation.journalTitle Acta Farmacéutica Bonaerense es
sedici.relation.journalVolumeAndIssue vol. 23, no. 3 es


Download Files

This item appears in the following Collection(s)