869568744

3, 4 and 5 and the control group (P = 0.0074, P = 0.0075, P = 0.00507, P = 0.00001 and P = 0.00001, respectively). The results of this study indicate tliat Echinacea improves body weight gain and resistance against challenge infection in fish.

Publication: Aquac. Nutr. 17, 695-700, 2011, tab. 6. In English, summary in English.

Anna Turska-Szewczuk, Leszek Guz, Buko Lindner, Hubert Pietras, Ryszard Russa. Otto Holst

STRUCTURAL CHARACTERIZATION OF THE O-SPECIFIC POLYSACCHARIDE FROM THE LIPOPOLYSACCHARIDE OF THE FISH PATHOGEN Aeromonas bestiarum STRAIN PIS

The O-specific polysaccharide obtained by mild-acid degradation of lipopolysaccharide of Aeromonas bestiarum PIS was studied by sugar and me-thylation analyses along with 'Hand ^l3C NMR spectroscopy.The seąuence of tlie sugar residues was detennined using ‘H/H NOESY and ‘H,^I3C HMBC experi-ments. The O-specific polysaccharide was found to be a high-molecular-mass polysaccharide composed of tetrasaccharide repeating units of the structure —»2)-P-D-Qui/>3NAcyl-( 1 ->2)-(3-D-Rib/-( 1 ^4)-(3-D-Gal/?-( 1 ^3 )-a-D-uc/?NAc-(1—►. Since smali amounts of a terminal Quip3N residue were identified in me-thylation analysis, it was assumed tliat the elucidated structure also represented the biological repeating unit of the O-specific polysaccharide.

Publication: Carbohyd. Res. 346, 815-821, 2011, fig. 5, tab. 1. In English, summary in English.

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