Extension of Branched Chain of Amylopectin by Enzymatic Reaction and its Structural Characterization

  • Yuguchi Y
  • Hashimoto K
  • Yamamoto K
 et al. 
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Abstract

Abstract: Amylose can be synthesized with phosphorylase (EC 2.4.1.1) by using malto-oligosaccharides as primers. In this context, the glucose-1-phosphate (G-1-P) units are consumed through the polymerization process. In this study, we investigated the use of amylopectin as a primer for the synthesis of a novel starch. The obtained starch was characterized by dynamic light scattering, small-angle X-ray scattering (SAXS) and X-ray diffraction. The SAXS results were well represented by the star-polymer model scattering func- tion. According to these results, we think that the amylopectin chain elongation was implied, and the transformation of crysralline type of amylopectin was observed by X-ray diffraction

Author-supplied keywords

  • amylopectin
  • amylose
  • phosphorylase
  • small-angle x-ray scattering

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Authors

  • Yoshiaki Yuguchi

  • Kenji Hashimoto

  • Kyoko Yamamoto

  • Shiho Suzuki

  • Shinichi Kitamura

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