1. Graduate Programme in Food Science and Technology, Department of Agroindustrial Science and Technology, Faculty of Agronomy Eliseu Maciel; Federal University of Pelotas; Caixa Postal 354, CEP 96010-900 Pelotas Brazil
2. Embrapa Clima Temperado; Caixa Postal 403, CEP 96001-970 Pelotas Brazil