1. ; Department of Biochemistry; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
2. ; Department of Agri-Food Industry, Food and Nutrition; “Luiz de Queiroz” College of Agriculture, University of São Paulo; Av. Pádua Dias 11, P.O. Box 9 Piracicaba SP CEP 13418-900 Brazil