Decoloración de alginato de sodio extraído de las algas pardas marinas del género sargassum con el uso de peróxido de hidrógeno
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01-Bleaching of sodium alginate ...
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Date
2007
Metadatos
Mostrar el registro completo del ítemAlternative Title
Bleaching of sodium alginate from the brown seaweeds sargassum with hydrogen peroxide.Abstract
Hydrogen peroxide bleaching of sodium alginate from seaweeds oh the Sargassum genus was studied. The influence of H2O2 concentration (percentage of H2O2 on a dry weight alginate basis, w/w) and NaOH/H2O2 ratio (% NaOH/% H2O2, both referred to a dry weight alginate basis, w/w) on the molecular weight, color removal and content of Fe3+ ions of bleached alginate samples was investigated by UV and IR spectroscopies, colorimetric determination of Fe3+ ions and vapor pressure osmometry. Higher yield, purity and molecular weight of alginate were obtained using 3% (or less) of hydrogen peroxide and a NaOH/H2O2 ratio of 1.2 for bleaching.Journal
Quim. NovaVolume
30Issue/Article Nr
1Resource/Dataset Location
http://www.scielo.br/pdf/qn/v30n1/01.pdfColecciones