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A comparative study of nine assay methods for dextransucrase and related enzymes has been made. A relatively widespread method for the reaction of dextransucrase with sucrose is the measurement of the reducing value of d-fructose by alkaline 3,5-dinitrosalicylate (DNS) and thereby the amount of d-glucose incorporated into dextran. Another method is the reaction with 14 C-sucrose with the addition...
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