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Growth kinetics and astaxanthin production of Phaffia rhodozyma on glycerol as a carbon source during batch fermentation

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Abstract

Glycerol was studied as a substrate for astaxanthin by Phaffia rhodozyma PR 190. With co-utilisation of yeast extract and peptone, the maximum specific growth rate was 0.24 ± 0.02 h−1. Astaxanthin percentage in total pigment is constant (0.78 mg/g) and its yield from glycerol is always 0.97 mg/g. The yield of biomass from glycerol alone is 0.50 ± 0.02 g/g. The specific rate of astaxanthin production versus the cell growth rate reached a maximum for an optimal specific growth rate of 0.075 h−1. For this optimal value, the maximum specific astaxanthin production rate is 0.09 ± 0.01 mg/g.h. The best astaxanthin results were : 33.7 mg/l, 0.2 mg/l.h and 1.8 mg/g yeast after a fermentation term of 168 hours. Our results suggest a strategy of astaxanthin production in fed batch culture or chemostat at a growth rate of 0.075 h−1. © Rapid Science Ltd. 1998

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Kusdiyantini, E., Gaudin, P., Goma, G. et al. Growth kinetics and astaxanthin production of Phaffia rhodozyma on glycerol as a carbon source during batch fermentation. Biotechnology Letters 20, 929–934 (1998). https://doi.org/10.1023/A:1005445808265

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  • DOI: https://doi.org/10.1023/A:1005445808265

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