CROSS-FLOW FILTRATION OF YEAST EXTRACT WITH MULTI-TUBULAR MEMBRANE MODULE AND ROTATING-DISK MEMBRANE MODULE

Recovery of nucleic acids and related compounds from yeast extract with two types of ceramic membrane module, multi-tubular membrane module (MTM) and rotating-disk membrane module (RDM) was examined. RDM recovered 56.5% of the nucleic acids and related compounds, while MTM recoverced 35.2%. This was due to differences in concentration and permeation ability of the modules. RDM exhibited 1.43 times larger concentration ability and 1.16 times larger permeatation ability than did MTM. The concentration ability of RDM had superior characteristics, as compared to the reported values.