Fermentation of lactose to ethanol with recombinant yeast in an immobilized yeast membrane bioreactor.
A novel concept of membrane bioreactor in which living cells are sandwiched between ultrafiltration (UF) and reverse osmosis (RO) membranes was applied for lactose fermentation to ethanol by genetically engineered yeast cells. The productivity of the Lactophile 13B strains was higher than that of the Lactophile 13D strains. In both cases performance data similar to those for glucose fermentation to ethanol by Saccharomyces cerevisiae were obtained. However, the operational stability of recombinant yeast cells was improved in the new bioreactor in comparison to the stability of these cells in a shake flask.
Jeong
Y S
YS
Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, New Jersey 08855-0909, USA.
Vieth
W R
WR
Matsuura
T
T