ABSTRACT
Potency of activity and efficiency of polyphenols-rich plant extracts to exhibit several biological properties are highly influenced by the chemical interactions of the biomolecules and physicochemical conditions of itself system, and possibly it is more severe in tannin-rich plant extracts due their complexity and reactivity, for this reason is necessary to define the class of components with high influence in the bioactivity of the phytochemicals. The objective of this study was to analyze the composition of carbohydrates present in crude and fractionated extracts of these plants using gas chromatography-coupled mass spectrometry (GC-MS). A wide gamma of carbohydrates was found in extracts from Euphorbia antisyphilitica Zucc., Jatropha dioica Cerv., and Larrea tridentata Cov. Arabinose, rhamnose, fucose, xylems, glucoronic acid, galacturonic acid, mannose, galactose, 82and glucose were detected by GC-MS, but only arabinose, rhamnose, and glucose were consistently observed in all crude and fractionated samples, revealing the necessity for understanding their role, function, and structure sugar phenolic compounds in foods and medicinal plants.
