| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
Spectrophotometric determination of tannins and caffeine in preparations from Paullinia cupana var. sorbilis
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| Autores: |
Pelozo,Maria Inez de Godoy
Cardoso,Mara Lane Carvalho
Mello,João Carlos Palazzo de
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| Data: |
2008-06-01
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| Ano: |
2008
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| Palavras-chave: |
Caffeine
Paullinia cupana
Total polyphenols
Spectrophotometric quantification assay
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| Resumo: |
The present work was designed to quantify the caffeine and total polyphenols in the extractive solution and the granulated form from the seeds of Paullinia cupana var. sorbilis, by the spectrophotometric method. The method showed linearity for the caffeine and polyphenols in the range of 5-25 µg/ml and 2.4-5.6 µg/ml respectively. The solutions of the semipurified fraction (EPA) and granulated form (GRA) showed linear responses in the range of 0.288-0.672 and 0.4-1.2 µg/ml, respectively. The precision and accuracy were determined for the EPA solution at a concentration of 100 µg/ml. The spectrophotometric method performed well in quantifying the caffeine and total polyphenols.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300002
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/S1516-89132008000300002
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.51 n.3 2008
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| Direitos: |
info:eu-repo/semantics/openAccess
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