Structural studies of Melicocca bijuga gum exudate
1993; Elsevier BV; Volume: 239; Linguagem: Inglês
10.1016/0008-6215(93)84221-q
ISSN1873-426X
AutoresGladys León de Pinto, Sofía Alvárez, Maritza Martı́nez, Aníbal Rojas, Edgardo Leal,
Tópico(s)Enzyme Production and Characterization
ResumoSpondias purpurea L., popularly known as ciriguela, is native and widespread tree from Mexico through Northern Peru and Brazil, particularly in semi-arid zones. This tree exudes a water soluble polysaccharide, constituted of a (1→3) linked galactan backbone substituted at C6 with d-galactose, d-xylose, l-arabinose, l-rhamnose and glucuronic acid units. Brazilian polysaccharide differs from Venezuelan on the amount of acid and arabinose as well as the presence of fucose and glucose as minor sugar. The d-galactose substitution (1→6) confers to the polysaccharide the peculiar capacity of binding α-d-galactose specific lectins after cross-linking with epichlorohydrin. The gel obtained was able to specifically retain d-galactose-binding-lectins, among with those from Artocarpus incisa, Artocarpus integrifolia, Erythrina velutina and Ricinus communis. On the other hand, no glucose-binding-lectins were retained.
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