Chemical and spectroscopic studies of Cercidium praecox gum exudate

Characterizations and rheological study of the purified polysaccharide extracted from quince seeds

“…The spectrum of QSG contained signals corresponding to (1 → 4) → β ‐ d ‐Xyl p , (1 → 4)‐ β ‐ d ‐Xyl p ‐2‐ O ‐Glc p A, and 4‐ O ‐Me‐ α ‐ d ‐Glc p (Table ). The resonance for carbonyl groups of the terminal non‐reducing d ‐glucuronic acid was observed at 176.17 ppm . The anomeric region includes various glycoside linkages in the polysaccharide structure.…”

The effect ofCercidium praecoxandProsopis laevigataon vertical distribution of soil free‐living nematode communities in the Tehuacán Desert, Mexico

“…Gum exudates produced by P. praecox typically contain the sugars arabinose (9%) and xylose (59%), together with b-O-glucuronic acid and its 4-ortho-methyl analogue (32%) (dePinto et al 1993(dePinto et al , 1994. However, research on the gum properties of P. praecox has been limited, and there have been no studies on this plant species in the Tehuaca´n region.…”

Xylan and xylan derivatives - biopolymers with valuable properties, 1. Naturally occurring xylans structures, isolation procedures and properties

“…HX present in the leaves and barks of tropical dicots such as Litsea species 41,42) , bark of Cinnamomum cassia and other species 43) are heavily branched with Araf units and, in addition, contain b-LAraf units in terminal and internal positions. It is interesting that the gum exudate from the tree of Cercidium praecox (Leguminosae) comprises a HX with a 1,4-xylan core highly substituted with MeGA and GA side chains and containing also terminal b-GA and arabinosyl residues in a-L-furanose and b-L-pyranose form 44) . All these HXs are able to form highly viscous aqueous solutions and exhibit exudate gum properties.…”