Figure 1

(a) Effect of different pH on dry cell mass and PHB production of two bacterial strains; (b) Effect of different temperatures on dry cell mass and PHB production of two bacterial strains; (c) Effect of different agitation speeds on dry cell mass and PHB production of two bacterial strains; (d) Comparison of Dry Cell Mass content and PHB production of Bacillus megaterium and Ralstonia eutropha as a function of incubation time.