International Sugar Journal

Comments on reducing sugar analysis in cane raw sugar by the Luff-Schoorl and Lane Eynon methods [Full subscriber]

Abstract Two ICUMSA methods were compared for determination of reducing sugars in cane raw sugar, viz. the Luff – Schoorl “Official” and Lane Eynon “Accepted” methods. The former one was validated on a limited number of samples in terms of repeatability and recovery. In the 0.1 to 1.0% reducing sugar range the Luff – Schoorl numbers were 14% higher than those by the Lane Eynon method. The reducing sugar recovery in the Luff – Schoorl procedure was on average 106%. A modification of the standardization procedure was proposed to correct for this apparent bias in the ICUMSA procedure. With this…

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