Summary
Ethanol concentrations and fermentor productivities were increased 20.2 and 15.5% at 90 and 95% recycle, respectively, when whole soy flour was added to the feed (2 g/ℓ at 90% recycle, and 1 g/ℓ at 95% recycle) of a continuous yeast fermentation system with recycle of cells and soy flour (soy flour concentrations were 2% at steady state in the fermentor) by UF membranes as compared to controls. The improvements were primarily due to increases in cell concentrations. Similar results were obtained for batch cultures.
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Damiano, D., Wang, S.S. Improvements in ethanol concentration and fermentor ethanol productivity in yeast fermentations using whole soy flour in batch, and continuous recycle systems. Biotechnol Lett 7, 135–140 (1985). https://doi.org/10.1007/BF01026685
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DOI: https://doi.org/10.1007/BF01026685