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| Regalado, E.L.; Laguna, A.; Torres, M.; Sabatier, J.D.; Hernández, M.; Ferrer, A.E.; Nogueiras, C.. |
| 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. |
| Tipo: Journal Contribution |
Palavras-chave: Bleaching; Bleaching; Http://aims.fao.org/aos/agrovoc/c_953. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/3855 |
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