The Determination of Starch in Raw Sugar by the SPRI Rapid Starch Test – Tentative

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ICUMSA Method GS1-17 (2013)

online version (2 years license)

Year of Publication: 2013


This method is suitable to determine the starch content of cane raw sugar at levels between 300 µg/g and 1000 µg/g.

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 600 nm and compared to a standard curve produced using soluble potato starch.

The absolute difference between two results obtained under repeatability conditions should not be greater than 7.4 µg/g and under reproducibility conditions not greater than 23 µg/g.

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Method Abstract


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ICUMSA Method GS1-17 (2013)


online version (2 years license)