1. Agricultural and Bioprocess Engineer, USDA, ARS, NGIRL, Crop and Entomology Research Unit, Brookings, SD, USA.
2. Corresponding author. Phone: (605) 693-3241. Fax: (605) 693-5240. E-mail: krosentr@ngirl.ars.usda.gov
3. Associate professor, and professor, Agricultural and Biosystems Engineering Department, Iowa State University, Ames, IA, USA.
4. Research food engineer, USDA, ARS, Eastern Regional Research Center, Wyndmoor, PA, USA.