Hydrolysis and dpeciation of Al bound to pectin and plant cell wall material and its reaction with the dye chrome Azurol S

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dc.contributor.authorWehr, JBen_AU
dc.contributor.authorBlamey, FPCen_AU
dc.contributor.authorHanna, JVen_AU
dc.contributor.authorKopittke, PMen_AU
dc.contributor.authorKerven, GLen_AU
dc.contributor.authorMenzies, NWen_AU
dc.date.accessioned2010-07-05T06:15:55Zen_AU
dc.date.available2010-07-05T06:15:55Zen_AU
dc.date.issued2010-05-12en_AU
dc.date.statistics2010-04-12en_AU
dc.description.abstractHydrolysis of aluminum (Al) in solution increases at pH ≥ 4 and with an Al concentration. Pectin, an important anionic polysaccharide of plant cell walls, adsorbs Al, but this phenomenon is poorly understood. This study showed that Al3+ hydrolysis results in binding of Al to pectin in excess of the stoichiometric equivalent, leading to oversaturation of the pectin with Al. However, the degree of pectin methyl-esterification did not affect the extent of Al hydrolysis. Binding of Al to purified cell wall material also resulted in Al hydrolysis in a pH- and soluble Al concentration-dependent manner, but the source of cell wall material had no effect at fixed pH. Staining of Al-treated pectin and cell wall material from wheat (Triticum aestivum L.) and sunflower (Helianthus annuus L.) with the Al-specific dye, chrome azurol S (CAS), resulted in the formation of a purple color, with the intensity related to the extent of Al hydrolysis. © 2010, American Chemical Societyen_AU
dc.identifier.citationWehr, J. B., Blamey, F. P. C., Hanna, J. V., Kopittke, P. M., Kerven, G. L., & Menzies, N. W. (2010). Hydrolysis and dpeciation of Al bound to pectin and plant cell wall material and its reaction with the dye chrome Azurol S. Journal of Agricultural and Food Chemistry, 58(9), 5553-5560. doi:10.1021/jf100201xen_AU
dc.identifier.govdoc1862en_AU
dc.identifier.issn0021-8561en_AU
dc.identifier.issue9en_AU
dc.identifier.journaltitleJournal of Agricultural and Food Chemistryen_AU
dc.identifier.pagination5553-5560en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/jf100201xen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1762en_AU
dc.identifier.volume58en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectPectinsen_AU
dc.subjectCell wallen_AU
dc.subjectAluminiumen_AU
dc.subjectAdsorptionen_AU
dc.subjectHydrolysisen_AU
dc.subjectDyesen_AU
dc.titleHydrolysis and dpeciation of Al bound to pectin and plant cell wall material and its reaction with the dye chrome Azurol Sen_AU
dc.typeJournal Articleen_AU
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