Development of a novel integrated process for co-production of β-galactosidase and ethanol using lactose as substrate

[Display omitted] •A novel integrated process for co-production of β-galactosidase and ethanol was built.•A new mathematic model for a new recycling permeabilization was established.•β-Galactosidase product was at 2.61U/mg and ethanol product was at 33.8% (v/v).•The novel integrated process might be...

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