MANNAN PRODUCED BY RHODOTORULA-RUBRA STRAIN-14

Some structural features and physicochemical properties of the mannan from Rhodotorula rubra strain 14 have been investigated. Chemical analysis indicated the mannan to have alternating β-(1→3) and β-(1→4) lingages. Wide-angle X-ray diffraction of the original mannan showed an intensive, amorphous halo, suggesting short-distance, macromolecular arrangement, as in other amorphous substances. The specimen underwent radical structural changes upon heating the polymer in phosphate buffer solution. © 1979.