Physico-chemical evaluation of guarana seeds dried by different methods

Revista Brasileira de Farmacognosia

Audi, E. A.¹  Melo, J. C. P. de¹  Yamaguti, E.¹  Ushirobira, T.M.A.¹  Universidade Estadual de Maringá, Maringá¹  Uemura, L.M.¹ 

关键词: Paullinia cupana;    guarana;    Sapindaceae;    pharmacopoeial assays;    quality contrai;    HPLC.;   

DOI  :  10.1590/S0102-695X2004000100003

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

Contrai quality of the vegetable drug "guaraná", with samples of seeds obtained from Amazonian area, were carried out by pharmacopoeial assays, and the extract were analysed by HPLC. The determination of methylxantines (MX) and total tannins (TI) was performed by spectrophotometric methods. The most yield of MX were showed by the sample GTIB and for TI the best result were obtained by the sample GTIM4s. The analysis by HPLC showed retention times for catechin, epicatechin and cafteine of 6.17,8.85 and 11.91 min, respectively.

【 授权许可】

Unknown