Microbial utilization and biopolyester synthesis of bagasse hydrolysates.

摘要: Cellulosic biomass is a potentially inexpensive renewable feedstock for the biorefineries of fuels, chemicals and materials. Sugarcane bagasse was pretreated in dilute acid solution under moderately severe conditions, releasing sugars other hydrolysates including volatile organic acids, furfurals soluble lignin. Utilization by an aerobic bacterium, Ralstonia eutropha, investigated to determine if inhibitors can be removed potential recycling reuse process water. Simultaneous biosynthesis polyhydroxyalkanoates (PHAs) production value-added bioplastics also investigated. An inhibitory effect on microbial activity observed, but it could effectively relieved using (a) large inoculum, (b) diluted hydrolysate solution, (c) tolerant strain, or combination three. The major formic acid, acetic furfural lignin were utilized low concentration levels (less than 100ppm) while at same time, PHA biopolyesters synthesized accumulated 57wt% cell mass appropriate C/N ratios. Poly(3-hydroxybutyrate) predominant biopolyester formed hydrolysates, cells synthesize co-polyesters that exhibit high ductility.