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Updated: Jan 25, 2026

IgY Technology: Extraction of Chicken Antibodies from Egg Yolk by Polyethylene Glycol PEG Precipitation
Published on: May 1, 2011
Improved strategy for large scale isolation of sialylglycopeptide (SGP) from egg yolk powder
Kathirvel Alagesan1,2,3, Daniel Kolarich1,3,4
1Department of Biomolecular Sciences, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany.
Abstract:
Chicken egg yolk is an easily available source for the isolation of sialylglycopeptides (SGP) carrying homogenous biantennary N-glycans. This approach has gained much attention in the last decade since these SGPs can easily be used for the semi-synthesis of glycoconjugates circumventing laborious full-synthetic methodologies. Here we report an optimised, significantly shorter (one day instead of five) and environmentally friendly procedure for the mg scale isolation of SGP using commercially available egg yolk powder. A single chromatographic step following chloroform/methanol precipitation of proteins and lipids yielded desired approximately 200 mg SGP from 250 g egg yolk powder within a day. •Environmentally friendly procedure for isolation of sialylglycopeptide from Egg yolk powder.•Reduced the protocol from five days down to one.
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