Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches
The objectives of this study were to determine the stability of cross-linked bonds of starch at different pH values and their effects on the pasting property of waxy maize starch cross-linked by 0.05% and 3% sodium trimetaphosphate/sodium tripolyphosphate. The cross-linked waxy maize starch (CLWMS)...
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my.upm.eprints.633172018-09-26T02:55:44Z http://psasir.upm.edu.my/id/eprint/63317/ Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches Shi, Yong-Cheng Shukri, Radhiah The objectives of this study were to determine the stability of cross-linked bonds of starch at different pH values and their effects on the pasting property of waxy maize starch cross-linked by 0.05% and 3% sodium trimetaphosphate/sodium tripolyphosphate. The cross-linked waxy maize starch (CLWMS) was slurried (40%, w/w) and subjected to alkali treatments of pH 9, 10, 11, and 12 at 40 °C for 4 h. The phosphorus in 3% CLWMS decreased with increasing pH and remained unchanged in 0.05% CLWMS for all pH treatments. Decreased settling volumes indicated the reduction of swelling power for the alkali-treated CLWMS at pH 11 and 12. The 31P NMR spectra of 3% CLWMS at pH 12 showed decreased cyclic monostarch phosphate, monostarch monophosphate, and monostarch diphosphate, but significantly increased distarch monophosphate. Alkali treatments of phosphorylated cross-linked starches offer a way to manipulate the rheological properties of cross-linked starch for desired food applications. Elsevier 2017-01-01 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/63317/1/Structure%20and%20pasting%20properties%20of%20alkaline-treated%20phosphorylated%20cross-linked%20waxy%20maize%20starches.pdf Shi, Yong-Cheng and Shukri, Radhiah (2017) Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches. Food Chemistry, 214. 90 - 95. ISSN 0308-8146 https://www.sciencedirect.com/science/article/pii/S0308814616310585 10.1016/j.foodchem.2016.07.036 |
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The objectives of this study were to determine the stability of cross-linked bonds of starch at different pH values and their effects on the pasting property of waxy maize starch cross-linked by 0.05% and 3% sodium trimetaphosphate/sodium tripolyphosphate. The cross-linked waxy maize starch (CLWMS) was slurried (40%, w/w) and subjected to alkali treatments of pH 9, 10, 11, and 12 at 40 °C for 4 h. The phosphorus in 3% CLWMS decreased with increasing pH and remained unchanged in 0.05% CLWMS for all pH treatments. Decreased settling volumes indicated the reduction of swelling power for the alkali-treated CLWMS at pH 11 and 12. The 31P NMR spectra of 3% CLWMS at pH 12 showed decreased cyclic monostarch phosphate, monostarch monophosphate, and monostarch diphosphate, but significantly increased distarch monophosphate. Alkali treatments of phosphorylated cross-linked starches offer a way to manipulate the rheological properties of cross-linked starch for desired food applications. |
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Article |
author |
Shi, Yong-Cheng Shukri, Radhiah |
spellingShingle |
Shi, Yong-Cheng Shukri, Radhiah Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches |
author_facet |
Shi, Yong-Cheng Shukri, Radhiah |
author_sort |
Shi, Yong-Cheng |
title |
Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches |
title_short |
Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches |
title_full |
Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches |
title_fullStr |
Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches |
title_full_unstemmed |
Structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches |
title_sort |
structure and pasting properties of alkaline-treated phosphorylated cross-linked waxy maize starches |
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Elsevier |
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2017 |
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http://psasir.upm.edu.my/id/eprint/63317/1/Structure%20and%20pasting%20properties%20of%20alkaline-treated%20phosphorylated%20cross-linked%20waxy%20maize%20starches.pdf http://psasir.upm.edu.my/id/eprint/63317/ https://www.sciencedirect.com/science/article/pii/S0308814616310585 |
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