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Three phase partitioning of starch and its structural consequences

Authors
Journal
Carbohydrate Polymers
0144-8617
Publisher
Elsevier
Publication Date
Volume
56
Issue
3
Identifiers
DOI: 10.1016/j.carbpol.2004.03.004
Keywords
  • Biodegradability Of Starch
  • Modified Starches
  • Three Phase Partitioning

Abstract

Abstract Three phase partitioning (TPP) of starch and its derivatives was carried out by adding tert-butanol to the aqueous solution of the polysaccharides in presence of ammonium sulfate. Starch and its modified forms could be recovered in more than 90% yield in the form of an interfacial layer between aqueous and organic phases. Quantitative FT-IR spectral analysis of TPP-treated potato starch revealed a clear change in the IR absorption band of the hydroxyl groups indicating a decrease in hydrogen bonding. TPP-treated starch showed lower biodegradability with wheat germ α-amylase.

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