Complexation of Amylosucrase‐Modified Waxy Corn Starch with Fatty Acids: Determination of Their Physicochemical Properties and Digestibilities
In this study, starch–lipid complexes were prepared using normal corn starch (NC) and amylosucrase‐modified waxy corn starch (ASWC) with myristic acid (C14:0) and palmitic acid (C16:0). The amylosucrase modification elongated branch chains in waxy corn starch leading to an increase of apparent amylo...
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Published in | Journal of food science Vol. 84; no. 6; pp. 1362 - 1370 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Wiley Subscription Services, Inc
01.06.2019
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Subjects | |
Online Access | Get full text |
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Summary: | In this study, starch–lipid complexes were prepared using normal corn starch (NC) and amylosucrase‐modified waxy corn starch (ASWC) with myristic acid (C14:0) and palmitic acid (C16:0). The amylosucrase modification elongated branch chains in waxy corn starch leading to an increase of apparent amylose content (29.7%) similar to that of NC (29.0%). The X‐ray diffraction of starch–lipid complexes revealed a V‐type pattern, a clear indication of complex formation. The ability of the ASWC to complex with fatty acids was greater than that of NC. Interestingly, the changes in relative crystallinity, thermal parameters, and digestion properties according to the complexation showed opposite patterns in NC and ASWC. This study found that the structure of ASWC contributes to the formation of starch–fatty acid complexes and suggested that the ASWC can be preferred over NC in a delivery system.
Practical Application
Amylopectin has been considered to be incapable of forming complexes with fatty acids due to its short chain length and steric hindrance. Through this study, an appropriate enzymatic modification of the molecular structures of waxy starches could make a complexation of waxy starches with fatty acids possible. The findings of this study suggest a promising perspective for utilization of waxy starch as a carrier material of lipophilic molecules. |
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Bibliography: | Authors Joo Hee Lim and Ha Ram Kim equally contributed to this work as first authors. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0022-1147 1750-3841 |
DOI: | 10.1111/1750-3841.14647 |