» Dr. Rosalee Hellberg
Assistant Professor

Schmid College of Science and Technology; Food Science
Dr. Rosalee Hellberg
Office Location:
Hashinger Science Center 204
(714) 628-2811
Lewis and Clark College, Bachelor of Arts
Oregon State University, Master of Science
Oregon State University, Ph.D.


Rosalee Hellberg is an Assistant Professor in the Food Science Program at Chapman University.  She teaches courses on Food Fraud, Food Microbiology, and General Microbiology.  Dr. Hellberg received an M.S. and Ph.D. in Food Science and Technology at Oregon State University, where she studied seafood safety and fish mislabeling.  She completed a post-doctoral fellowship at the FDA working on the development and optimization of DNA-based methods for the detection of food pathogens and food mislabeling.  Dr. Hellberg received the 2015-2017 Wang-Fradkin Assistant Professorship Award for exceptional merit in scholarly and creative activity at Chapman University.  In 2017, Dr. Hellberg was selected as a recipient of the Emerging Leaders Network Award by the Institute of Food Technologists.  She has published over 30 peer-reviewed articles and book chapters.  


Dr. Hellberg’s research program at Chapman University is focused on the development and application of rapid methods for the detection of food fraud and food contaminants. Her research on food fraud has been dedicated to the development and application of molecular techniques to identify meat and seafood species in food products.  Dr. Hellberg and her research team have published numerous studies that utilize methods such as DNA barcoding and real-time PCR to reveal undeclared species in food products, including pet foods, game meats, and seafood products. Dr. Hellberg’s research on food contaminants has been focused primarily on the development and application of rapid methods to concentrate, detect and differentiate foodborne pathogens, such as norovirus, Salmonella, and Listeria.    

Recent Creative, Scholarly Work and Publications
Perestam AT, Fujisaki KK, Nava O, Hellberg RS. 2017. Comparison of real-time PCR and ELISA-based methods for the detection of beef and pork in processed meat products. Food Control 71: 346–352.
Hellberg RS, Hernandez BC, Hernandez EL. 2017. Identification of meat and poultry species in food products using DNA barcoding. Food Control 80: 23-28.
Pollack SJ, Kawalek MD, Williams-Hill DM, Hellberg RS. 2017. Evaluation of DNA barcoding methodologies for the identification of fish species in cooked products, Food Control Available online 16 August 2017.
Hellberg RS, Pollack SJ, Hanner RH. 2016. Seafood species identification using DNA sequencing. In: Hanner RH, Nauum AM, editors. Seafood Authenticity and Traceability: A DNA-based Perspective. San Diego: Academic Press/Elsevier. p. 113-133.
Mitchell JK, Hellberg RS. 2016. Use of the mitochondrial control region as a potential DNA mini-barcoding target for the identification of canned tuna species. Food Analytical Methods 9(10): 2711-2720.
Hellberg RS, Chu E. 2016. Effects of climate change on the persistence and dispersal of foodborne bacterial pathogens in the outdoor environment: A review. 42(4): 548-72.
Kane, DE, Hellberg RS. 2016. Identification of species in ground meat products sold on the U.S. commercial market using DNA-based methods. Food Control 59: 158-163.
Quinto CA, Tinoco R, Hellberg RS. 2016. DNA barcoding reveals mislabeling of game meat species on the U.S. commercial market. Food Control 59: 386-392.
Okuma TA, Hellberg RS. 2015. Identification of meat species in pet foods using a real-time polymerase chain reaction (PCR) assay. Food Control 50: 9-17.
Levy DJ, Beck NK, Kossik AL, Patti T, Meschke JS, Calicchia M, Hellberg RS. 2015. Microbial safety and quality of fresh herbs from Los Angeles, Orange County, and Seattle farmers’ markets. Journal of the Science of Food and Agriculture 95(13): 2641-5.
Shokralla S, Hellberg RS, Handy SM, King I, Hajibabaei M. 2015. A DNA mini-barcoding system for authentication of processed fish products. Scientific Reports 5: Article number 15894.
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 7(10): 1950-1959.
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.