α-及びにβ-アミラーゼの分類と名稱

概要

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From measurements of optical rotation, KUHN classified amylases in two groups, namely, α-amylase and β-amylase, which apparently set free maltose in α- and β-forms, respectively. In the present paper, mutarotation of fission products was examined when corxnercial dextrin was degraded by the five following amylases. Fission products by crystalline Taka-amylase, crystalline bacte rial amyloclastic amylase, and crystalline bacterial saccharogenic amylase exhibited mutarotation in negative or α-sense, whereas those by purified sweet-potato β-amylase and purified black mold γ-amyl-ase exhibited mutarotation in positive or β-sense. Therefore, the authors propose to classify amylases in α-type and α-type according to direction of mutarotation of the fission products and also propose to suffix the sighn [α-type] or [β-type] to their original name, such as Taka-amylase [α-type], bacterial saccharogenic amylase [α-type], or black mold γ-amylase [β-type], etc.
社団法人日本農芸化学会の論文