1. Department of Food Industry, Agrarian School of Viseu , Viseu , Portugal
2. CERNAS-IPV Research Centre, Polytechnic Institute of Viseu, Campus Politécnico , Viseu , Portugal
3. Mechanical Engineering Department, ADAI-LAETA, University of Coimbra , Coimbra , Portugal
4. IPFN, Instituto Superior Técnico, University of Lisboa , 1049-001 Lisboa , Portugal