Xanthan gum is an anionic heteropolysaccharide produced by the bacterium Xanthomonas campestris. Synergistic galactomannan – xanthan gum interactions are used for commercial and technological applications. Prosopis seed gum were mixed with xanthan gum (Sigma, U.S.A) at the following ratios 100/0, 80/20, 60/40, 40/60, 20/80, 0/100 (0.5 % ). Solutions (w/w) were prepared and heated for 1 h. After...

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BACKGROUND: A computerized statistical analysis of allergy skin test results correlating patient reactivities initiated our interest in the cross-reactive allergens of mesquite tree pollen. In-vitro testing with mesquite-sensitized rabbits and a variety of deciduous tree pollens revealed so many cross-reactivities that it became apparent there could be more allergens in mesquite than previously...

Two new species of Tetradiplosis inducing galls on Prosopis caldenia are described from Argentina: Tetradiplosis panghitruz Martínez n. sp. and Tetradiplosis rayen Martínez n. sp. Tetradiplosispanghitruz induces multilocular galls on vegetative stems, whereas T. rayen induces unilocular galls containing multiple larvae on the rachis of the developing inflorescences. The adult male, female, pupa...