DETERMINATION OF MONOSACCHARIDES IN BEET PULP DIGESTION LIQUIDS CLARIFIED WITH ALUMINUM SULFATE

By application of anion chromatography (HPAEC) the following mean mono saccharide contents in six beet pulp digerates clarified with aluminiu m sulphate were found (g/kg on beet): glucose 0.623, fructose 0.227, a rabinose 0.017, galactose 0.075 and ribose 0.076. With an enzymatic me thod lower values for glucose and fructose were found (0.554 and 0.210 g/kg on beet). The reduction value expressed as invert sugar (RW) ave raged to 0.898 applying the Berlin Institute method (BIM) and 0.920 g/ kg with the fluorimetric benzamidine method (related to beet weight). The reduction equivalents of Reinefeld et al. for the above monosaccha rides were examined and re-evaluated. Using the enzymatic results for glucose and fructose a RW of about 95 or 92.5 %, on base of BIM or ben zamidine method, can be calculated. More than 60 % of RW is formed by glucose.