Characterization of multiple forms of α-glucan phosphorylase from Musa paradisiaca fruits

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Three forms of α-glucan phosphorylase from mature banana fruit pulp separated by ammonium sulfate fractionation and DEAE-cellulose chromatography were anodic at pH 8·6 on starch gel electrophoresis. The three forms differed in sensitivity to the phenolics extracted from immature and mature banana fruit pulp. Only two forms of the enzyme were detected in immature banana fruit pulp.