Sugar cane, cane juice, and various products obtained therefrom frequently contain significant quantities of dextran and starch. Existing methods were not suitable for the rapid assay of these impurities in the presence of sucrose. A method is described for the rapid assay of mixtures of dextran and starch. Starch is determined colorimetrically and dextran turbidimetrically after enzymatic removal of the starch. Both of the impurities can affect technologic processes in cane sugar manufacture. Starch in raw sugar is associated with problems of filtration and in cane juice is related to the phosphorus content. The presence of dex.tran can indicate delay in harvesting cane or spoilage in juice. METHOD FOR THE RAPID ASSAY Of

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