2014 Fiscal Year Final Research Report
Design of Molecular Structure of Starch for Bread Baking by Considering Correspondences to Polymer Structure of Plastic Material
| Project/Area Number |
25660098
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Food science
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KODA Tomonori 山形大学, 大学院理工学研究科, 准教授 (60261715)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 高分子鎖構造 / レオロジー / 製パン性 / 澱粉 |
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| Outline of Final Research Achievements |
We have recently demonstrated a possibility of pure rice bread excluding wheat flour from the composition. Viscoelastic property of rice batter is a key factor for baking of the pure rice bread. Our purpose was to propose a suitable molecular structure of rice starch for baking for pure rice bread. For this purpose, we examined viscoelastic property of solution of starch in an ionic liquid. We prepared starches with various types of molecular structures. Effect of molecular structure of starch on rheology of ionic liquid with starch was investigated. Molecular behavior of starch including water was also studied by using molecular dynamics simulation. Our results indicate that branch length of amylopectin does not have significant effects on the rheology of rice batter and amylose as a linear macromolecule introduces molecular entanglements in the system contributing to elasticity. We conclude that inclusion of amylose molecules is important for species of rice for bread baking.
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| Free Research Field |
高分子物性工学
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