Continuous flow isoelectric focusing for purification of proteins

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Abstract
To estimate the feasibility of isoelectric focusing in a continuous mode, the conditions for obtaining stable and linear pH gradients were first investigated, using a mixture of carrier ampholytes. Then the operating parameters allowing the isoelectric focusing of bovine serum albumin as model protein were determined. A theoretical approach was used to find conditions minimizing the electrohydrodynamic effect, mainly responsible for protein dispersion, for the separation of bovine serum albumin and α-lactalbumin from bovine milk.