Disclosed here includes a method for purifying a biologic composition, comprising diafiltering the biologic composition into a composition comprising phosphate buffered saline (PBS) to obtain a purified composition. The method disclosed here can be particularly useful for removing one or more impurities from the biologic composition, such as bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane (Bis-tris).

This disclosure describes methods for purifying protein, and more particularly to methods for purifying protein that minimize the development of undesirable odors and flavors in the purified protein and increase protein yield.

The present disclosure relates to a non-invasive, non-gravitationally dependent, pressurized method for the rapid selective extraction, volume expansion, and reclamation of medication and medication metabolites (including but not limited to naturally occurring or engineered hormones, chemicals, antibodies, enzymes, lipids, proteins or pharmaceutical products) from urine. The disclosure further relates to methods for reclamation of medication from urine in a pressurized system and methods of using the medication reclaimed from that urine.

The invention relates to methods of production of a silica concentrate from geothermal fluids. More particularly, although not exclusively, the invention relates to the production of a colloidal silica concentrate, colloidal silica or precipitated silica from high temperature geothermal fluids by ultrafiltration to produce size-specific silica colloids and step-wise concentration of silica to avoid precipitation or gelling.

This disclosure describes methods for purifying protein, and more particularly to methods for purifying protein that minimize the development of undesirable odors and flavors in the purified protein and increase protein yield.

The present invention relates to methods for obtaining natural colorants from materials of plant origin. The method comprises a mixing step, a co-pigmentation step, an enzymatic hydrolysis step and various filtration steps carried out under specific conditions.

A process has the ability to produce polyalkenamer-containing compositions. Stages of the process include converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture, and working up the product mixture to remove at least one of a monomer and an oligomer of the at least one cycloalkene to obtain the polyalkenamer-containing composition. The working up stage is effected by a diafiltration.

Provided herein are materials and methods for the preparation of blood products. In one aspect, provided herein is a composition including platelets or platelet derivatives and an aqueous medium, wherein the aqueous medium has a protein concentration less than 50% of the protein concentration of donor apheresis plasma.

The present invention relates to modification to permeate channels and permeate materials in a cross-flow filtration system to improve performance in counter current filtration having both retentate channels and permeate channels wherein a solution is pumped through one of the channels and drawn through a membrane to one of the other channels to assist in positive pressure driven filtration by using the osmotic pressure, concentration, or preferential solubility difference between the retentate and permeate flow streams thereby increasing or altering the flux through the membrane separating the flow streams.

The present invention relates to a process for producing cycloalkenamer-containing compositions. The polymerization of cycloalkenamer is stopped by addition of alkyl vinyl ethers. This is followed by a membrane filtration. This type of production affords polyalkenamers that are thermally stable at 180 C.