1. Department of Food Engineering, Middle East Technical University, 06800 Ankara, Turkey
2. Department of Food Engineering, Cankiri Karatekin University, Uluyazi Campus, 18100 Cankiri, Turkey
3. Center of Physics and Engineering of Advanced Materials, Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal