Detalhes bibliográficos
| Ano de defesa: |
2010 |
| Autor(a) principal: |
LEAL, Ana Flavia Vasconcelos Borges
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| Orientador(a): |
BARA, Maria Teresa Freitas
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| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
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| Programa de Pós-Graduação: |
Mestrado em Ciências Farmacêuticas
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| Departamento: |
Ciências da Saúde - Farmácia
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| País: |
BR
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| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tde/2101
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Resumo: |
Maytenus ilicifolia Mart ex Reiss (Celastraceae) popularly known in Brazil as espinheirasanta is used against gastric disorders and ulcers. Quality of herbal medicines is essential to ensure the safety and efficacy of the drug. The dissolution test is an essential tool to assess the quality of herbal medicines in the solid dosage form for oral use. This work aimed to evaluate the dissolution behavior of eleven herbal medicines containing Maytenus ilicifolia, produced with powder or dry extract, purchased in local shops (Goiânia-GO, Brazil). Assay of catechin and epicatechin by high-pressure liquid chromatography (HPLC) and dissolution methods were validated and obtained results allowed the quantification of these markers with precision, accuracy and selectivity. The dissolution profiles have been determined adopting the following conditions: paddle apparatus at 75 rpm and HCl 0.1 M (900 mL at 37°C ± 0.5°C) as dissolution medium. Through the dissolution profiles it has been determined the mathematical model of release (first order), the percentage of catechin and epicatechin dissolved at 45 minutes and the efficiency of dissolution. Capsule containing powder showed rapid release of the markers in the medium (Q>85% in 12 minutes). Tests conducted to verify the quality of herbal medicines were average weight, weight variation, dissolution, chromatographic profile and sensory analysis. It was found that only 45.5% of analyzed herbal medicines products provide satisfactory results. The dissolution test, sensory analysis, average weight, weight variation and chromatographic profile were responsible for noncompliance of, respectively, 18.2%, 18.2%, 18.2%, 9.1% and 36.4% of the samples. Obtained data demonstrated the need to implement these tests in quality control of herbal medicines, so by investigating the release of the active ingredients of these medicines. |
