Preeti Birwal, PhD, is a Scientist in Processing and Food Engineering at the College of Agricultural Engineering and Technology at Punjab Agricultural University, India, where she is working on nonthermal food preservation, fermented beverages, food packaging, and technology of millet-based beer. She has participated at national and international conferences and seminars and has delivered lectures as a resource person on doubling farmers' income through dairy technology. She has published research papers, edited books, book chapters, popular articles, conference papers, abstracts, and editorial opinions. She also serves as an external examiner for various Indian state agricultural universities and as an editor and reviewer for several journals.

Megh R. Goyal, PhD, PE, is a Retired Professor in Agricultural and Biomedical Engineering a the College of Engineering at the University of Puerto Rico-Mayaguez Campus. He was proclaimed as the "Father of Irrigation Engineering in Puerto Rico for the twentieth century" by the ASABE, Puerto Rico Section, for his pioneering work on micro irrigation, evapotranspiration, agroclimatology, and soil and water engineering. During his professional career of over 52 years, he has received many prestigious awards. A prolific author and editor, he has written more than 200 journal articles and several textbooks and has edited over 100 books.

Baldev Singh Kalsi, PhD, is involved in the field of food engineering research, currently working on ohmic heating-assisted extraction of valuable components from agricultural produce. He has participated in national and international conferences.