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Diffusion coefficients of glucose and ethanol in cell‐free and cell‐occupied calcium alginate membranes
Open accessAbstract
The diffusivities of glucose and ethanol in cell‐free and cell‐occupied membranes of calcium alginate were measured in a diffusion cell. The lag time analysis was used. Diffusivities decreased with increasing alginate concentration and were comparable with those in water for a 2% alginate membrane. Glucose and ethanol concentrations had no effect on the respective diffusion coefficients. The ratio of ethanol diffusivity to glucose diffusivity in 2 and 4% alginate agreed closely with the inverse ratio of the hydrodynamic raii for the two molecules in water, indicating that the hydrodynamic theory of diffusion in liquids may be applicable to diffusion in dilute alginate gels. Also, the presence of 20% dead yeast cells had no effect on the diffusivities. The data reported can be used to study reaction and diffusion in immobilized cell reactors and cell physiology under immobilized conditions.
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Cited by
Environmental applications of immobilized microbial cells: A review
Cassidy, M. B., Lee, H., & Trevors, J. T. (1996) · Journal of Industrial Microbiology · doi:10.1007/bf01570068 · Cited by 555
Chandramouli, V., Kailasapathy, K., Peiris, P., & Jones, M. (2004) · Journal of Microbiological Methods · doi:10.1016/j.mimet.2003.09.002 · Cited by 475
Metadata
- Authors
- Hannoun, B. J. M., & Stephanopoulos, G.
- Venue
- Biotechnology and Bioengineering
- Publisher
- Wiley
- Published
- 1986-06
- Volume
- 28
- Issue
- 6
- Pages
- 829-835
- ISSN
- 0006-3592 (ISSN-L)
- 1097-0290
- OpenAlex
- W2161016084
- Cited by
- 217
- References
- 0
- FWCI
- 6.38
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Diffusion coefficients of glucose and ethanol in cell‐free and cell‐occupied calcium alginate membranes. https://app.cochat.ai/papers/10.1002/bit.260280609
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- Hannoun, B. J. M., & Stephanopoulos, G. (1986). Diffusion coefficients of glucose and ethanol in cell‐free and cell‐occupied calcium alginate membranes. Biotechnology and Bioengineering. https://doi.org/10.1002/bit.260280609
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