1. Dept. of Food Technology; Fluminense Federal Univ. (UFF) 24.230-340; Niteroi RJ Brazil
2. Dept. of Epidemiology and Public Health; Federal Rural Univ. of Rio de Janeiro (UFRRJ), 23.897-000; Seropédica RJ Brazil
3. Dept. of Food Science; Federal Univ. of the State of Rio de Janeiro (UNIRIO), 22.290-255; Rio de Janeiro RJ Brazil
4. Natl. Inst. for Health Quality Control; Oswaldo Cruz Foundation (FIOCRUZ), 21.040-900; Rio de Janeiro RJ Brazil