FIG. 4.

GC-MS total ion chromatographs of the alditol acetates derived from the O-chain polysaccharides from strains CE367 and CE3. Peak 1, 2,3,4-tri-O-methylfucose; peak 2, 2,3-di-O-methylfucose; peak 3, 2-O-methylfucose; peak 4, 3-O-methyl-6-deoxytalose; peak 5, fucose; peak 6, mannose. The rest of the two chromatographs were very similar, including the QuiNAc peak, which emerged at a much later retention time (not shown). The very small signal at the position of peak 1 in the case of CE367 did not have the MS of TOM-Fuc, and by ion scanning of the chromatogram, TOM-Fuc was undetectable.