Identification of 2'-fucosyllactose in milk of the crabeater seal (Lobodon carcinophagus).

1. An oligosaccharide was isolated from extracts of crabeater seal milk by preparative paper chromatography. 2. The saccharide was identified as Fuc alpha 1-2Ga1 beta 1-4G1c by 1H-NMR spectroscopy. 3. This work represents the first identification of an oligosaccharide, other than lactose, in the milk of a pinniped.