Summary
Batch and continuous culture studies have been carried out on a strain ofZ.mobilis (ZM6306) which can convert lactose directly to ethanol. Previous strain development has established that thelac operon encoded on the transposon Tn951 can be expressed inZ.mobilis. Using a medium containing 80 g/l glucose and 40 g/l lactose, it was found that strain ZM6306 could convert about 13 g/l lactose to 4 g/l ethanol and 6 g/l galactose in continuous culture. Further lactose conversion is likely with increased cell concentration using a cell recycle system.
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Chun, U.H., Rogers, P.L. Kinetic studies on alac-containing strain ofZymomonas mobilis . Biotechnol Lett 8, 807–810 (1986). https://doi.org/10.1007/BF01020829
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DOI: https://doi.org/10.1007/BF01020829