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Mangiferin, a C-glucosyl xanthone, abundant in mango and honeybush, is increasingly targeted for its bioactive properties and thus to enhance functional properties of food. The thermal degradation kinetics of mangiferin at pH3, 4, 5, 6 and 7 were each modeled at five temperatures ranging between 60 and 140°C. First-order reaction models were fitted to the data using non-linear regression to determine...
Thermal stability of the benzophenones, 3-β-d-glucopyranosyl-4-β-d-glucopyranosyloxyiriflophenone (1), 3-β-d-glucopyranosylmaclurin (2) and 3-β-d-glucopyranosyliriflophenone (3), and the xanthones, mangiferin (4) and isomangiferin (5), was assessed separately in an aqueous model solution (pH 5) to delineate their major degradation products and mechanism(s). Degradation followed first-order reaction...
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