Study of optimum conditions for Polyhydroxybutyrate production from local isolate of Bacillus cereus

Abstract

The highest Polyhydroxybutyrate (PHB) production from Bacillus cereus B5 were 6.2 k/ L, biomass  8.4 g/ L and  73.8 % , the yield by the using optimum conditions , incubation temperature  35 C, for 48 hours aerobically by using  shaking incubator on 150 rpm / min , 2% inoculum volume, the pH value was 7, and the production media was content 1% glucose as carbon source and 0.25 % peptone as nitrogen source.