Private family services were held Monday for George L. Marsh, a professor emeritus in the food science and technology department at the University of California, Davis, who died April 30 at the age of 92. An authority on the processing and preservation of fruits and vegetables, Professor Marsh researched the development of heat-processing methods for fruit and vegetable juices and investigated freezing, scalding, flash pasteurization and other related processes. The application of refrigeration in the fermentation and stabilization of wine was largely the result of his early work. He also developed the chemical techniques for recovering and storing tartrate deposits from wine vats and made important contributions to the engineering of blanching and dehydration of cut fruits. His later research focused on color retention of green vegetables, causes for changes in the consistency of tomato products and the role of nitrogen fertilizer in causing the lining of food cans to deteriorate. Born in San Francisco, Professor Marsh received a bachelor's degree in horticulture and a master's degree in agricultural technology from UC Berkeley in 1931 and 1934, respectively. He was employed in industry, for an orange juice concentrate producer and then for the California Walnut Growers Association, before joining the staff and later the faculty of the university. He worked first at UC Berkeley, coming to UC Davis in 1951 as one of the first academic staff members in the food technology department. Recognized as a meticulous researcher and educator, Marsh was a charter member of the Institute of Food Technology. He also served as president of the American Society of Enologists and was presented the society's merit award in 1963. His continued interest in the wine industry led him to serve as a wine judge at the California State Fair from 1937 to 1966. He retired from the university in 1968. Professor Marsh was preceded in death by his wife, Gertrude. He is survived by his daughters, Avonia M. Dondero of Orinda and Marilyn M. Wilson of Denver, Colo.; five grandchildren and eight great-grandchildren. Memorial contributions may be made to the UC Davis Foundation Students First Compaign for the George Marsh Scholarship Fund for Undergraduates in Food Science and Technology, in care of the Development Office, University of California, Davis, CA 95616. -