Radical-Scavenging activities of total extracts and identification of four anthocyanin isomers from two purple-fleshed varieties of Ipomoea batatas L. produced in Burkina Faso, by HPLC-MS/MS2) Dominique Saga Kaboré, Adama Héma, Elie Kabré, Raoul Bazié, Paul-André Koussao Somé, Eloi Palé, Issa Touridomon Somé, Pierre Duez, Mouhoussine Nacro |