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Characterization of non-solvent precipitated starch using asymmetrical flow field-flow fractionation coupled with multiple detectors



Characterization of non-solvent precipitated starch using asymmetrical flow field-flow fractionation coupled with multiple detectors



Carbohydrate Polymers 206: 21-28



Non-solvent precipitated starch (non-SPS) is a novel component for starch-based emulsions. Herein, three non-SPS materials were prepared using ethanol as a precipitant of waxy maize starch granules (WMs). The WMs were either untreated (SP) or pre-treated via acid-hydrolysis (AHSP). In addition, SP was modified using n-octenyl succinic anhydride (OSA), yielding OSASP. This study aimed to investigate the influence of the non-SPS preparation method on the size, molar mass (M), and apparent density (ρapp) of the materials when subjected to different dissolution/dispersion procedures using asymmetrical flow field-flow fractionation (AF4). The results showed that the molar mass, size, and apparent density depended on the type of non-SPS with a decrease in Mw (1.8-9.4 g/mol) and rrms (60-148 nm) upon re-dispersion in different media in the order: SP > OSASP > AHSP. Moreover, different types of non-SPS materials displayed different conformational properties and were stable in aqueous solution at room temperature in the investigated time (24 h).

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Accession: 066010040

Download citation: RISBibTeXText

PMID: 30553314

DOI: 10.1016/j.carbpol.2018.10.100


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