The authors appreciate and acknowledge Dr. Danilo J. Mejía, Officer of Agricultural and Food Engineering Technologies Service (AGST, FAO, Rome), not only for the Table of Contents he proposed to the authors, but also for his invaluable help throughout the generation and editing of this manual. The authors also want to acknowledge the CYTED (Ibero-American Program to Promote Science and Technology), Subprogram XI for many years of support in developing and promoting the combined methods technology for fruits and vegetables, as well as other commodities.
