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http://repositorio.ufla.br/jspui/handle/1/40014
Título: | Quantification of Tannins from Curupay Bark |
Palavras-chave: | Anadenanthera peregrina Stiasny index |
Data do documento: | 2019 |
Editor: | Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro |
Citação: | SOUSA, T. B. et al. Quantification of Tannins from Curupay Bark. Floresta e Ambiente, Seropédica, v. 26, n. 1, 2019. |
Resumo: | This study aimed to assess the influence of time and sodium sulfite concentration on tannin yield in Curupay bark and propose better extraction conditions. The extractions were performed using 100 g of dried bark and 1500 mL of water at 70 °C, with extraction times of 2, 3, and 4 h and amount of extractor salt at the concentrations of 0, 1, 2, 3, and 4%. The following parameters were evaluated: content of total solids, total yield of solids, Stiasny index, and gravimetric yield of condensed tannins and non-tannins. Results show that the higher the concentration of sodium sulfite, the higher the content and yield of solids, as well as the higher the extraction of non-tannin compounds. Three-hour extraction time at 3.0% sodium sulfite concentration was the best condition to extract tannins from Curupay bark, under which a condensed tannin yield of 20.46% was obtained. |
URI: | http://repositorio.ufla.br/jspui/handle/1/40014 |
Aparece nas coleções: | DCF - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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ARTIGO_Quantification of Tannins from Curupay Bark.pdf | 1,05 MB | Adobe PDF | Visualizar/Abrir |
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