Partitioning of amylase produced by Aspergillus niger in solid state fermentation using aqueous two-phase systems

•Exclusion volume increased in systems with higher molar mass polymer.•The parameters of interaction between groups can be estimated by the UNIFAC model.•The enzymatic kinetics are higher after 36 h of fermentation.•There was greater migration of enzyme to the upper phase of the partition systems.•I...

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