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SiebertPh scale

Karl J. Siebert – Professor Emeritus

Department of Food Science, 129 Food Research Laboratory,
Geneva, NY 14456-0462; e-mail:

Major Program Themes

Research Interests

One of Prof. Siebert’s major research interests was developing understanding of the relationships between a product’s composition, instrumental measurements of its properties and their sensory perception. Interactions between proteins and small molecules that affect haze, foam and other physical and sensory properties are also studied. The tools used for these investigations are chemical, physical and sensory analysis methods, the results of which are related by chemometric and multivariate modeling. Models can also be used to optimize analytical methods, to improve processing operations and to predict product shelf-life. The group’s research also encompassed theoretical aspects of microbiology, such as the application of simulation modeling to assess risk in microbiological sampling, pattern recognition to identify unknown microorganisms, and modeling the inhibitory effects of organic acids on microbial growth. Publications.

Bio Data

Karl Siebert spent 18 years with the Stroh Brewery Company, where he held positions from research associate to director of research and vice president of Strohtech, the biotechnology subsidiary. There he led a research program in which microbiologists, chemists, biochemists and chemical engineers carried out product and process R&D on beer, coolers, juice based drinks and soft drinks. In 1990 Dr. Siebert joined Cornell University as Professor of Biochemistry. He served as chairman of the Food Science & Technology Department and Associate Director of the Cornell Institute of Food Science from 1990-1995. After 25 years at Cornell, Prof. Siebert retired in 2015 and was granted emeritus status soon after. Prof. Siebert taught a graduate course in chemometrics applications in food science (FOOD 6080) in alternate years and the Science and Technology of Beer Food Sci 4300. He was also involved in research and extension. Resume.