Lipid Removal by Depth Filters in Plasma Fractionation

We herein describe a 3M Purification Inc. depth filter media – Zeta PlusTM DELI that exhibits selective adsorptive properties for plasma lipids. Lipids plug chromatographic columns and filters during plasma fractionation steps and cause solution instability for the final product. Several parameters which could affect the lipid removal efficiency on Zeta Plus DELI have been investigated: prefiltration, contact time, ionic strength, pH, and temperature. The maximum percentage of total lipids eliminated, in optimal operating conditions, was 68%. This method has proven to be efficient for the treatment of plasmatic lipids and can be easily incorporated in an industrial process.