Li, L., Zhou, S., Ji, H. et al. Optimization of fermentation conditions for 1,3-propanediol production by marine Klebsiella pneumonia HSL4 using response surface methodology., Chin. J. Ocean. Limnol. 32, 1036–1045 (2014). https://doi.org/10.1007/s00343-014-3267-3
DOI:
Li, L., Zhou, S., Ji, H. et al. Optimization of fermentation conditions for 1,3-propanediol production by marine Klebsiella pneumonia HSL4 using response surface methodology., Chin. J. Ocean. Limnol. 32, 1036–1045 (2014). https://doi.org/10.1007/s00343-014-3267-3DOI:
Optimization of fermentation conditions for 1,3-propanediol production by marine Klebsiella pneumonia HSL4 using response surface methodology
摘要
Abstract
The industrially important organic compound 1
3-propanediol (1
3-PDO) is mainly used as a building block for the production of various polymers. In the present study
response surface methodology protocol was followed to determine and optimize fermentation conditions for the maximum production of 1
3-PDO using marine-derived Klebsiella pneumoniae HSL4. Four nutritional supplements together with three independent culture conditions were optimized as follows: 29.3 g/L glycerol
8.0 g/L K2 HPO4
7.6 g/L (NH4)2 SO4
3.0 g/L KH2 PO4
pH 7.1
cultivation at 35°C for 12 h. Under the optimal conditions
a maximum 1
3-PDO concentration of 14.5 g/L
a productivity of 1.21 g/(L·h) and a conversion of glycerol of 0.49 g/g were obtained. In comparison with the control conditions
fermentation under the optimized conditions achieved an increase of 38.8% in 1
3-PDO concentration
39.0% in productivity and 25.7% in glycerol conversion in flask. This enhancement trend was further confirmed when the fermentation was conducted in a 5-L fermentor. The optimized fermentation conditions could be an important basis for developing lowcost
large-scale methods for industrial production of 1
3-PDO in the future.
关键词
Keywords
references
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