Abstract
The effects of furfural on the growth of the lactose-utilizing yeast Candida blankii 35 were investigated using the method of continuous cultivation under conditions of carbon limitation and at dilution rates of 0.1 and 0.25 h−1. The data obtained at dilution rate 0.1 h−1 and 0.04% furfural showed a decrease in the yield of biomass by 6% and in the RNA content, but the synthesis of cell protein increased with 11.6% compared to the control. Treatment with 0.08% furfural induced significant changes in growth and biosynthesizing ability. A strong inhibitory effect of furfural was observed: the biomass yield decreased by half at 48 h and the culture the reached the control level of protein content. The effect of 0.02% furfural at 0.25 h−1 dilution rate caused a significant reduction of biomass yield (34.4%) and the substrate utilization rate reached values higher by 52.4% at 48 h, but the protein-synthesizing ability of the cells slightly increased. The results showed that a treatment with 0.04 or 0.08% furfural caused significant disturbances of cell functions, the yields of biomass and protein drastically decreased and the culture was washed out. Data showed that the inhibitory effect of furfural on the growth and protein-synthesizing ability of Candida blankii 35 depends on the inhibitor concentration as well as the dilution rate.
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Tzvetkova, B., Hristozova, T., Angelov, A. et al. Effect of furfural on the growth of lactose-utilizing Candida Blankii 35. World Journal of Microbiology and Biotechnology 20, 219–223 (2004). https://doi.org/10.1023/B:WIBI.0000023823.06113.f0
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DOI: https://doi.org/10.1023/B:WIBI.0000023823.06113.f0