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In Vitro Action of Human and Porcine α-Amylases on Cyclomalto-oligosaccharides by Hitoshi Kondo; Hiroshi Nakatani; Keitaro Hiromi is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The vitro action of human and porcine pancreatic alpha-amylases on cyclomalto-oligosaccharides (cyclodextrins) was investigated both by a high-performance liquid chromatographic analysis and a quantitative analysis of the reducing power of cyclodextrin hydrolyzates. Cyclomalto-octaose (gamma-cyclodextrin) was hydrolyzed to produce mainly maltose, but cyclomalto-hexaose and -heptaose were little affected both by human and porcine alpha-amylases. Quantitative analysis of reducing power revealed that the ring-opening rate of gamma-cyclodextrin catalyzed by human pancreatic alpha-amylase was 2.8 times slower than that catalyzed by the porcine enzyme. The number of multiple attacks on gamma-cyclodextrin and its inhibitor constants for human pancreatic alpha-amylase and porcine pancreatic alpha-amylase were almost the same.

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Author

Hitoshi Kondo; Hiroshi Nakatani; Keitaro Hiromi

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0008-6215)

Published

1990

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)