The phosphorus concentration in the culture medium affects the production of poly (3 hydroxybutyrate) (PHB) by Alcaligenes Eutrophus. This investigation shows that the phosphorus concentration in the initial culture m...The phosphorus concentration in the culture medium affects the production of poly (3 hydroxybutyrate) (PHB) by Alcaligenes Eutrophus. This investigation shows that the phosphorus concentration in the initial culture medium influences both the residual cell mass and the PHB production. A kinetic model is proposed for the production of PHB in a fedbatch culture of Alcaligenes Eutrophus. The kinetic model is compared with the experimental results and appears to provide an excellent description of the overall fermentation process. A phosphate mass concentration of 45 g/L produced the highest level of dry cell mass concentration (266 g/L), PHB mass concentration (214 g/L), PHB mass content (804%) and PHB productivity (351 g/L·h) so far obtained.展开更多
文摘The phosphorus concentration in the culture medium affects the production of poly (3 hydroxybutyrate) (PHB) by Alcaligenes Eutrophus. This investigation shows that the phosphorus concentration in the initial culture medium influences both the residual cell mass and the PHB production. A kinetic model is proposed for the production of PHB in a fedbatch culture of Alcaligenes Eutrophus. The kinetic model is compared with the experimental results and appears to provide an excellent description of the overall fermentation process. A phosphate mass concentration of 45 g/L produced the highest level of dry cell mass concentration (266 g/L), PHB mass concentration (214 g/L), PHB mass content (804%) and PHB productivity (351 g/L·h) so far obtained.
