» Dr. Rosalee S. Hellberg
Assistant Professor

Schmid College of Science and Technology
Food Science
Dr. Rosalee S. Hellberg
Lewis and Clark College, Bachelor of Arts in Biochemistry
Oregon State University, Master of Science in Food Science
Oregon State University, Ph.D. in Food Science

Dr. Rosalee Hellberg is an Assistant Professor in the Food Science Program at Chapman University.  Prior to Chapman University, Dr. Hellberg completed a fellowship program at the U.S. FDA, where she contributed to the development of rapid, DNA-based test methods for organisms such as norovirus, Salmonella, and Listeria.  Dr. Hellberg completed an M.S. and Ph.D. in Food Science and Technology at Oregon State University, studying seafood safety and fish species misbranding.  She has published 20 peer-reviewed articles and book chapters and given 25 professional presentations.

The focus of Dr. Hellberg’s research is to investigate the effects of climate change on food safety, specifically with regard to food microbiology.  Numerous environmental factors, including temperature, acidity, oxygen availability, and rainfall can impact the transport, growth, and persistence of microorganisms.  However, few studies have examined the relationship between these factors and the microbial safety of food systems.  Dr. Hellberg’s current research is focused on determining these relationships through both historical studies of outbreaks in relation to climate change, as well as prospective studies examining the relationships between the microbial safety of foods and climatic factors, such as rainfall and temperature.

Recent Creative, Scholarly Work and Publications
Hellberg RS, Li F, Sampath R, Yasuda I, Carolan H, Wolfe J, Brown M, Alexander R, Williams-Hill DM, Martin WB. 2014. Rapid detection and differentiation of human noroviruses using RT-PCR coupled to electrospray ionization mass spectrometry. Food Microbiology 44: 71-80.
Hellberg RS, Kawalek MD, Van KT, Shen Y, Williams-Hill DM. 2014. Comparison of DNA extraction and PCR setup methods for use in high-throughput DNA barcoding of fish species. Food Analytical Methods Advance online publication.
Okuma TA, Hellberg RS. 2014. Identification of meat species in pet foods using a real-time polymerase chain reaction (PCR) assay. Food Control Advance online publication.
Hellberg RS, Martin KG, Keys AL, Haney CJ, Shen Y, and Smiley RD. 2013. 16S rRNA partial gene sequencing for the differentiation and molecular subtyping of Listeria species. Food Microbiology 36:231-240.
Hellberg RS, Haney CJ, Shen Y, Cheng C-M, Williams-Hill DM, Martin WB. 2012. Development of a custom 16S rRNA gene library for the detection and molecular subtyping of Salmonella enterica. Journal of Microbiological Methods 91: 448-458.
Pierce SE, Bell RL, Hellberg RS, Cheng C-M, Chen K-S, Williams-Hill DM, Martin WB, Allard MW. 2012. Detection and identification of Salmonella enterica, Escherichia coli, and Shigella spp. via PCR-ESI-MS: isolate testing and analysis of food samples. Applied and Environmental Microbiology 78(23): 8403-8411.
Hellberg RS, Mireles DeWitt CA, Morrissey MT. 2012. Risk-benefit analysis of seafood consumption: a review. Comprehensive Reviews in Food Science and Food Safety 11(5): 490-517.