Zein recovery using non-porous membranes

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Plant proteins – e.g. – derived from legumes – algae or...

Reexamination Certificate

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Reexamination Certificate

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06846909

ABSTRACT:
A membrane process for treating zein solutions to increase the zein concentration in the solution. The process uses a non-porous membrane that preferentially permeates the solvent and rejects the zein. Optionally, the process can be operated as a diafiltration process to yield a concentrate of high zein purity.

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S. Nunes et al., “Dense hydrophilic composite membranes for ultrafiltration.” Journal of Membrane Science, 1995, vol. 106, p. 49-56.

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