1. Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, KY 40546, USA
2. Department of Biological and Agricultural Engineering, University of California Davis, Davis, CA 95616, USA
3. Agricultural Engineering Department, Mansoura University, El Mansoura, Egypt
4. Department of Chemistry, University of California, Davis, CA 95616, USA
5. Biochemistry, Molecular, Cellular and Developmental Biology Graduate Group, University of California, Davis, CA 95616, USA