Comparative study of two spectrophotometric reagents for catechol analysis in guaraná seeds powder
In this article are described and compared two spectrophotometric methods for the analysis of catechol (o-hydroxyphenol) in Paullinea cupana var. sorbilis, popularly known as guaraná. The pounded seed samples were extracted with ethanol 97% v/v and the solutions were treated with p-aminophenol in al...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2003-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100021 |