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Acetate production byClostridium thermoaceticum in corn steep liquor media

1995; Springer Science+Business Media; Volume: 15; Issue: 5 Linguagem: Inglês

10.1007/bf01569969

0169-4146

M.M. Shah, Munir Cheryan,

Enzyme Production and Characterization

A low-cost nutrient medium based on corn steep liquor (CSL) was developed for the production of acetates byClostridium thermoaceticum. Pre-treatment of CSL with dolime and vitamin supplementation increased the rate of acetate production. Adding excess nutrients in a fed-batch mode minimized by-product formation and increased final acetate concentration from 19 g L−1 to 40 g L−1 acetic acid. High yields of acetic acid (0.95 g g−1 glucose in fed-batch mode) was probably due to the conversion of the lactic acid in CSL into acetic acid by the organism.