Description
The polarimetric sucrose content in molasses is determined. It does not take into account the presence of raffinose, kestoses and other optically active substances. It is usually used to assess the value of molasses to fulfil a commercial requirement and does not purport to measure the exact sucrose content. The test sample is produced by first diluting, clarifying (with basic lead acetate solution) and then filtering the test solution. The polarimetric sucrose content is then determined by direct measurement and, after acid hydrolysis of the test sample, using a polarimeter or saccharimeter. The method has Accepted Status for molasses samples with polarimetric sucrose content between 30.1 and 49.5 g/100 g, the absolute difference between two results obtained under repeatability conditions should not be greater than 2.8 g/100 g and under reproducibility conditions should not be greater than 5.2 g/100 g.
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Method Abstract
Please click here to open ICUMSA Method GS4-1 (2026).
