Production of poly(3-hydroxybutyrate) from waste potato starch.

摘要

Saccharified waste potato starch was used as an alternative low-cost C source in high cell density production of the polymer, poly(3-hydroxybutyrate) (PHB). Using Ralstonia eutropha NCIMB 11599 with phosphate limitation, 179 g/l biomass, 94 g/l PHB, Ybiomass/starch = 0.46 g/g, YPHB/starch = 0.22 g/g and PHB productivity = 1.47 g/(l*h) were achieved. Residual maltose accumulated in the fed-batch reactor but caused no noticeable inhibition. Performance with saccharified starch was virtually identical to that with glucose.