Ronald E. Wrolstad earned his B.S. in Food Technology at Oregon State University and his Ph.D. in Agricultural Chemistry at the University of California at Davis. He was a faculty member of Oregon State University's Food Science and Technology Department for 40 years before retiring in 2004. He is author or co-author of 169 research publications. He is a Fellow of both IFT and ACS's Division of Agricultural and Food Chemistry. Catherine A. Culver holds a Ph.D. in Food Science from North Carolina State University. She has seventeen years of experience in the food industry, including seven years as an applied enzymologist/biochemist with Kraft General Foods and seven years as a color specialist with Pepsi-Cola.