Chemical characterization of the polysaccharide of the hydatid membrane of Echinococcus granulosus.

Abstract An acetone powder of the hydatid membrane has been prepared, and the proteins were extracted with 0.5 N NaOH. Galactose, N -acetylgalactosamine, and N -acetylglucosamine were detected in the deproteinized acetone powder. The molar ratio of galactose to hexosamines was 1:1, and the ratio between both amino sugars was found to be 9–10 moles of N -acetylgalactosamine to 1 mole of N -acetylglucosamine. No sugars were found in the water and NaOH extracts.