Abstract: This method is suitable to determine the starch content of cane raw sugar at levels below 300 mg/kg.
Any starch in the sugar solution is solubilised and iodide/iodate added to form a blue starch-iodine complex.
The absorbance of the solution is then measured by spectrophotometry at 700 nm.
The absolute difference between two results obtained under repeatability conditions should not be greater than 12.6 mg/kg and under reproducibility conditions not greater than 26.3 mg/kg.
Online Access to ICUMSA Method GS1-16 (2013)
Access to the online Version of ICUMSA Method GS1-16 (2013) can be obtained from the Sugar Industry Website, operated by Bartens. The online access for two years costs EUR35 (+ 19 % VAT for German and EU citizens without EU VAT No.).