An improved folate stable isotope dilution assay of unexploited food sources from Brazil

Lisa Obermaier, Barbara Paes Miglioli da Mata, Caio Humberto Perego, Kátia Sivieri, Mateus Kawata Salgaço, André Gonzaga dos Santos, Ruth Boehni, Viola Groehn, Jean Pierre Knapp, Michael Rychlik