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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Desenvolvimento e valida??o de m?todo anal?tico para determina??o de teor de ?cido g?lico e catequina no fitoter?pico sanativo? por cromatografia l?quida de alta efici?ncia

Bezerra, Beatriz Pinheiro 27 February 2012 (has links)
Made available in DSpace on 2014-12-17T14:16:30Z (GMT). No. of bitstreams: 1 BeatrizPB_DISSERT.pdf: 1734874 bytes, checksum: 6c9183abd4605927f73899354ef306e2 (MD5) Previous issue date: 2012-02-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The herbal medicine Sanativo? is produced by the Pernambucano Laboratory since 1888 with indications of healing and hemostasis. It is composed of a fluid extract about Piptadenia colubrina, Schinus terebinthifolius, Cereus peruvianus and Physalis angulata. Among the plants in their composition, S. terebinthifolius and P. colubrina have in common phenolic compounds which are assigned most of its pharmacological effects. The tannins, gallic acid and catechin were selected as markers for quality control. The aim of this study was the development and validation of analytical method by HPLC/UV/DAD for the separation and simultaneous quantification of gallic acid (GAC) and catechin (CTQ) in Sanativo?. The chromatographic system was to stationary phase, C-18 RP column, 4,6 x 150 mm (5 mm) under a temperature of 35 ? C, detection at 270 and 210 nm. The mobile phase consisted of 0.05% trifluoroacetic acid and methanol in the proportions 88:12 (v/v), a flow rate of 1 ml/min. The analytical method presented a retention factor of 0.30 and 1.36, tail factor of 1.8 and 1.63 for gallic acid and catechin, respectively, resolution of 18.2, and theoretical plates above 2000. The method validation parameters met the requirements of Resolution n ? 899 of May 29, 2003, ANVISA. The correlation coefficient of linear regression analysis for GAC and CTQ from the standard solution was 0.9958 and 0.9973 and when performed from the Sanativo? 0.9973 and 0.9936, the matrix does not interfere in the range 70 to 110 %. The limits of detection and quantification for GAC and CQT were 3.25 and 0.863, and 9.57 and 2.55 mg/mL, respectively. The markers, GAC and CQT, showed repetibility (coefficient of variation of 0.94 % and 2.36 %) and satisfactory recovery (100.02 ? 1.11 % and 101.32 ? 1.36 %). The method has been characterized selective and robust quantification of GAC and CTQ in the Sanativo? and was considered validated / O medicamento fitoter?pico Sanativo? ? produzido pelo Laborat?rio Pernambucano desde 1888 com indica??es de cicatrizante e hemost?tico. Trata-se de um extrato fluido composto por Piptadenia colubrina, Schinus terebinthifolius, Cereus peruvianus e Physalis angulata. Dentre as plantas de sua composi??o, S. terebinthifolius e P. colubrina possuem em comum compostos fen?licos aos quais ? atribu?da a maior parte de seus efeitos farmacol?gicos. Os taninos, ?cido g?lico e catequina foram selecionados como marcadores para controle de qualidade desse medicamento. O objetivo do presente trabalho foi o desenvolvimento e valida??o de m?todo anal?tico por CLAE/UV/DAD para separa??o e quantifica??o simult?nea de ?cido g?lico (ACG) e catequina (CQT) no fitoter?pico Sanativo?. O sistema cromatogr?fico teve como fase estacion?ria, coluna RP C-18, 4,6 x 150 mm (5 μm), sob a temperatura de 35 ?C, detec??o em 270 e 210 nm. A fase m?vel foi composta por ?cido trifluoroac?tico 0,05 % e metanol nas propor??es 88:12 (v/v), sob vaz?o de 1 ml/min. O m?todo anal?tico desenvolvido apresentou um fator de reten??o de 0,30 e 1,36, fator de cauda de 1,8 e 1,63, para ?cido g?lico e catequina, respectivamente, resolu??o de 18,2, al?m de pratos te?ricos acima de 2000. O m?todo atendeu os par?metros de valida??o exigidos na Resolu??o RE n? 899, de 29 de maio de 2003, da ANVISA. O coeficiente de correla??o da an?lise de regress?o linear para ACG e CQT a partir da solu??o padr?o foi de 0,9958 e 0,9973 e a partir do Sanativo? foi de 0,9973 e 0,9936, a matriz do fitoter?pico n?o interfere no intervalo de 70 a 110%. Os limites de detec??o e de quantifica??o para ACG e CTQ foram de 3,25 e 0,863, e 9,57 e 2,55 μg/mL, respectivamente. Os marcadores, ACG e CTQ, apresentaram repetibilidade (coeficientes de varia??o de 0,94 % e 2,36 %) e recupera??o satisfat?ria (100,02 ? 1,11 % e 101,32 ? 1,36 %). O m?todo ainda se caracterizou seletivo e robusto para quantifica??o de ACG e CQT no Sanativo? e foi considerado validado

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