Polyhydroxyalkanoates from pear (Pyrus communis L) waste by Bacillus subtilis

Objective: Analyze the production of polyhydroxyalkanoates (PHA) by Bacillus subtilis sp., in submerged culture using pear residues as a carbon source.
 Design/methodology/approach: The consisted residue flour concentrations 5 and 15 % for 72 h. Reducing sugars, biomass, pH, protein, pHA extraction quantification were analyzed during submerging cultivation subtilis
 Results: results showed that can grow generate PHA, having its maximum proportion PHA extract 0.094 g/L at 72h culture, substrate concentration 5%.
 Study limitations/implications: More studies related to optimization conditions are required prior treatment waste will be considered.
 Findings/Conclusions: synthesis these biopolymers is important promote their large-scale agro-industrial waste, thus contributing reduce environmental impact.