Author/Authors :
Ana Flora D. Vasconcelos، نويسنده , , Nilson K. Monteiro، نويسنده , , Robert F.H Dekker، نويسنده , , Aneli M. Barbosa، نويسنده , , Elaine R. Carbonero، نويسنده , , Joana L.M. Silveira، نويسنده , , Guilherme L. Sassaki، نويسنده , , Roberto da Silva، نويسنده , , Maria de Lourdes Corradi da Silva، نويسنده ,
Abstract :
Four exopolysaccharides (EPS) obtained from Botryosphaeria rhodina strains isolated from rotting tropical fruit (graviola, mango, pinha, and orange) grown on sucrose were purified on Sepharose CL-4B. Total acid hydrolysis of each EPS yielded only glucose. Data from methylation analysis and 13C NMR spectroscopy indicated that the EPS from the graviola isolate consisted of a main chain of glucopyranosyl (1→3) linkages substituted at O-6 as shown in the putative structure below:
Keywords :
Triple-helix conformation , Botryosphaeria rhodina isolates , Exopolysaccharides , ?(1?6)-d-Glucans , ?(1?3 , 1?6)-d-Glucans
