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Please use this identifier to cite or link to this item: http://hdl.handle.net/1834/3855

Title: Decoloración de alginato de sodio extraído de las algas pardas marinas del género sargassum con el uso de peróxido de hidrógeno
Other Titles: Bleaching of sodium alginate from the brown seaweeds sargassum with hydrogen peroxide.
Authors: Regalado, E.L.
Laguna, A.
Torres, M.
Sabatier, J.D.
Hernández, M.
Ferrer, A.E.
Nogueiras, C.
ASFA Terms: Bleaching
Issue Date: 2007
Citation: Quim. Nova, 30(1). p. 5-8
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.
URI: http://hdl.handle.net/1834/3855
Related document: http://www.scielo.br/pdf/qn/v30n1/01.pdf
Appears in Collections:1. Articulos científicos

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