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Figure 5 | Biotechnology for Biofuels

Figure 5

From: Radiation induces acid tolerance of Clostridium tyrobutyricum and enhances bioproduction of butyric acid through a metabolic switch

Figure 5

Comparison of acid production for the wild-type and irradiated C. tyrobutyricum cells. (A) The production of butyric acid and acetic acid were estimated from the slopes of the linear plots for the wild-type cells and the cells irradiated at 68 AMeV and doses of 30 and 40 Gy. (B) The production of butyric acid and acetic acid were estimated from the slopes of the linear plots for the wild-type cells and the cells irradiated at 114 AMeV and doses of 30 and 40 Gy. (C) Linearization (integration) of the kinetic growth profiles of biomass dry weight over time using a natural logarithm transformation. The maximal specific growth rates for the wild-type and the irradiated cells were calculated according to the example given for the cells irradiated at 114 AMeV and a dose of 40 Gy grown in Clostridium growth medium containing 60 g·L-1 of glucose. BDW, biomass dry weight.

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