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Characterization of sugar diffusion coefficients in alginate membranes



Characterization of sugar diffusion coefficients in alginate membranes



Biotechnology Techniques 11(3): 183-185



The diffusivity of several monosaccharides and disaccharides in calcium alginate gels was determined using a specially designed diaphragm cell. The diffusion coefficients of the tested sugars are 4 to 18% smaller in alginate gel than in water and, with the exception of fructose, this difference increases with increasing sugar molecular weight. Also the position of the carbonyl group seems to be determined in the value of the diffusion coefficient - ketoses have lower diffusion coefficients than aldoses.

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Accession: 002775988

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DOI: 10.1023/a:1018457631368


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