19沼津工業高等専門学校研究報告
第 57 号，2023 年 2 月

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The Structure and Hydrolysis by Enzyme of Acorn Starch

OOKAWA Masashi*, ITOU Mai*
Abstract: We investigated the crystal structure and hydrolysis by enzyme of acorn starch. As aresult of the crystal structural analysis by powder X-ray diffraction method, it was found thatthe starch of acrons (kunugi, arakashi and konara) have structure of C-type. The konara starch
was conversed to monosaccharide or oligosaccharide by hydrolysis using enzyme. It was assumed
that the crystal structure of starch affects hydrolysis reaction of it.

Key Words: Acorn starch, Crystal structure, Hydrolysis

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22

沼津工業高等専門学校研究報告

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[1] vQbF,}&Ålg9 47,

kE{3O, 1982, pp.371.

[2] RSµÛ¡Ák &½{h­~Û.¤*  ª  M u https://www.alic.go.jp/joho-- %d/joho08_000037.html, 7 2022-11-24.

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hc.co.jp/products/details/takadia/, 7 2022-11-24.
[7] Chemical Book. MALTOSE(69-79-4)

13C

NMR Ûhttps://www.chemicalbook.com/SpectrumEN_69-79-

4_13CNMR.htm, 7 2022-11-24.



第 57 号