STRUCTURAL STUDIES OF AN ARABINOGALACTAN——A WATER SOLUBLE POLYSACCHARIDE FROM THE POLLEN OF PAPAVER SOMNIFERUM

A polysaccharide,PS(1),has been isolated from the pollen of papaver somniferum.PS(1)is ahighly branched arabinogalactan,which,mainly contains α—L—arabinofuranosyl(1→)and(3,6→1)—β—D—galactopyranosyl residues.We also studied the circular dichroism and immunoactivity of PS(1).