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Oxygen solubility and permeability of carbohydrates
Michael J Whitcombe1, Roger Parker, Stephen G Ring
1Institute of Food Research, Norwich Research Park, Colney, UK. michael.whitcombe@bbsrc.ac.uk
Abstract:
The saturated oxygen concentration in a series of aqueous solutions of sorbitol (up to 35% w/w) and maltitol (up to 50% w/w) was measured using colorimetric reagent vials based on Rhodazine D. The results indicate that the solubility of oxygen in low-water carbohydrates is considerably lower than its solubility in pure water. It was concluded that the low-oxygen solubility is a major factor contributing to the barrier properties of low-water content carbohydrates used in the encapsulation of flavours, lipids, peptides and other oxidisable species.
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