| Revista: | Brazilian archives of biology and technology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000392658 |
| ISSN: | 1516-8913 |
| Autors: | Molin, Rochele Fernanda1 Dartora, Nessana2 Borges, Ana Claudia Piovezan1 Goncalves, Itamar Luis3 Di Luccio, Marco1 Valduga, Alice Teresa1 |
| Institucions: | 1Universidade Regional Integrada do Alto Uruguai e das Missoes, Programa de Pos-Graduacao em Ecologia, Erechim, Rio Grande do Sul. Brasil 2Universidade Federal do Parana, Programa de Pos-graduacao em Bioquimica, Curitiba, Parana. Brasil 3Universidade Regional Integrada do Alto Uruguai e das Missoes, Departamento de Ciencias da Saude, Erechim, Rio Grande do Sul. Brasil |
| Any: | 2014 |
| Període: | Nov-Dic |
| Volum: | 57 |
| Número: | 6 |
| Paginació: | 997-1003 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | Ilex paraguariensis is a native species to South America. Its economic importance is in the use of its leaves and twigs in the processing of a product popularly known as “ chimarrão”. The aim of this study was to evaluate the correlations between some physicochemical process parameters in the oxidation of I. paraguariensis leaves oxidation. The leaves of Maté with age 1.0, 6.5 and 12.0 months were subjected to an oxidation process for 3 h under different relative humidity conditions (80, 9 0 and 99%) at 26°C. The extracts were evaluated usi ng the experimental design techniques to maximize the oxidation conditions for the total polyphenols, antioxidant capacity, water activity and color. The condition of 90% humidity and leaf age 6.5 months resulted in lower ligh tness and yellow color of the product. Green color was not significantly influenced by the studied parameters. The highest levels of total phenols and antioxidant potential were found when the leaf age was one month and humid ity was 90%. Thus, it could be concluded that the air humid ity of the chamber and leaf age influenced the oxidation process of the leaves of Maté as well as the antioxidant capacity of the extract obtained |
| Disciplines | Química |
| Paraules clau: | Fitoquímica, Ilex paraguariensis, Yerba mate, Fenoles, Propiedades fisicoquímicas, Actividad antioxidante |
| Keyword: | Chemistry, Phytochemistry, Ilex paraguariensis, Yerba mate, Phenols, Physicochemical properties, Antioxidant activity |
| Text complet: | Texto completo (Ver PDF) |
