A survey of mangiferin and hydroxycinnamic acid ester accumulation in coffee (Coffea) leaves: biological implications and uses - Campa, C; Mondolot, L; Rakotondravao, A; Bidel, L PR; Gargadennec, A; Couturon, E; La Fisca, P; Rakotomalala, J J; Jay-Allemand, C; Davis, A P (Ann Bot, 2012)