Abstract
Waste rapeseed oil is a useful substrate for polyhydroxyalkanoates (PHA) production employing Cupriavidus necator H16. In fed-batch mode, we obtained biomass and PHA yields of 138 and 105 g l−1, respectively. Yield coefficient and volumetric productivity were 0.83 g PHA per g oil and 1.46 g l−1 h−1, respectively. Propanol at 1% (v/v) enhanced both PHA and biomass formation significantly and, furthermore, resulted in incorporation of 3-hydroxyvalerate units into PHA structure. Thus, propanol can be used as an effective precursor of 3-hydroxyvalarete for production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer. During the fed-batch cultivation, propanol concentration was maintained at 1% which resulted in 8% content of 3-hydroxyvalerate in copolymer.
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This work was supported by projects MSM 0021630501 and CZ.1.05/2.1.00/01.0012 of the Czech Ministry of Education.
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Obruca, S., Marova, I., Snajdar, O. et al. Production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) by Cupriavidus necator from waste rapeseed oil using propanol as a precursor of 3-hydroxyvalerate. Biotechnol Lett 32, 1925–1932 (2010). https://doi.org/10.1007/s10529-010-0376-8
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DOI: https://doi.org/10.1007/s10529-010-0376-8