Downstream Processing Whitepapers - BioPharm International

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Downstream Processing Whitepapers

Improving Aggregate Removal from Monoclonal Antibody Feed Using High Resolution Cation Exchange Chromatography

August 27, 2013

Nuvia™ HR-S media is a new cation exchanger designed for high resolution of closely related product impurities such as aggregates. It delivers excellent resolution with a final aggregate content of < 0.3% and a high recovery of > 80% from a heterogeneous feed of monoclonal antibody aggregates and monomer. Aggregate content and recovery in the eluate were shown to be a function of the target conductivity measured at the end of collection

Development of Robust Charge Heterogeneity Assays using DOE

August 27, 2013

Develop robust charge heterogeneity assays using Design of Experiment (DOE). Utilizing imaged cIEF and DOE provides efficient and rapid method development and reduces assay failure. This application note provides a step-by-step process for the successful application of DOE tools with the iCE3.

TOYOPEARL GigaCap DEAE-650M Performance Comparison to TOYOPEARL DEAE-650M

July 30, 2013

TOYOPEARL GigaCap DEAE-650M is a very high capacity anion exchange resin capable of delivering products of similar purity to that seen with the TOYOPEARL DEAE-650M resin with identical operating conditions yet is more tolerant of higher conductivities.

Purification of Oligonucleotides on TOYOPEARL GigaCap® Q-650S

May 28, 2013

TOYOPEARL GigaCap Q-650S is capable of delivering oligonucleotides of comparable purity to that seen with the TSKgel® SuperQ-5PW (20) resin and at slightly higher process yields under the same loading conditions but at lower pressures.

TOYOPEARL GigaCap® DEAE-650M Preserving Resolution at Increased Protein Loads

April 30, 2013

TOYOPEARL GigaCap DEAE-650M, a very high capacity anion exchange resin for process scale chromatography, offers chromatographers a combination of binding capacities greater than 150 g/L while maintaining peak resolution.

Liposome Characterization by FFF-MALS-QELS

April 30, 2013

Liposomes are made of lipid bilayers and are often used in drug delivery by encapsulating the core with therapeutic drugs. During liposome research, formulation, manufacturing and quality control, it is of great importance to monitor liposome size and encapsulation. Field flow fractionation (FFF) with the concomitant use of Multi-Angle Light Scattering (MALS) and Quasi-Elastic Light Scattering (QELS, aka dynamic light scattering) is an ideal tool for such characterization.

Tosoh - Hydrophobic Interaction Chromatography: Effects of Mixed Electrolytes on Protein Separations

January 27, 2014

Tosoh - Hydrophobic Interaction Chromatography: Effects of Mixed Electrolytes on Protein Separations

Does Tween 20 Affect Monoclonal Antibody Separation?

October 29, 2013

Tween 20 has various beneficial properties for biological analysis, such as stabilizing proteins, solubilizing protein membranes, and preventing nonspecific binding of primary and secondary antibodies. Therefore, Tween 20 is often present in samples of monoclonal antibodies that require analysis using techniques such as SEC. This app note investigates whether the presence of Tween 20 detergent directly in the sample and in the eluent during multiple injections of an IgG sample onto an Agilent Bio SEC column affects the analysis or the columns.

Separation of Impurities in a Single Step using a Mixed-Mode Chromatography Media

October 29, 2013

MPC™ media is a versatile mixed-mode chromatography media with unique separation properties for multiple polishing applications at process scale. Combined properties of hydroxyapatite and fluoroapatite provides superior clearance performance.

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