Effect of Organic Acids Derived from Black Liquor on Growth of Selected Escherichia coli MG 1655

Abstract

Joon-Kwan Moon ABSTRACTIn this study, we selected an Escherichia coli strain (E. coli MG 1655) metabolizing arabinose derived from acid hydrolyzed black liquor as a carbon source and investigated effect of organic acids (acetic acid, formic acid, and lactic acid) presented in black liquor on growth of the E. coli MG 1655. We measured growth of E. coli MG 1655 under various concentration of each and combined three kinds of organic acids. The E. coli MG 1655 shows tolerance to acetic acid, lactic acid and formic acid at these concentrations (1.0 g/ℓ acetic acid, 1.2 g/ℓ lactic acid and 0.8 g/ℓ formic