Folic acid retention evaluation in preparations with wheat flour and corn submitted to different cooking methods by HPLC/DAD. - de Paiva Azevedo EP; Dos Santos Alves EM; Khan SS; Silva LDS; de Souza JRB; Santos BS; Rabelo CB; Dos Santos Costa AC; de Azevedo Filho CA; da Silva Vasconcelos MA (PloS one, 2020)