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Douglas L. Marshall

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Douglas L. Marshall, PhD, CFS

Douglas L. Marshall, PhD, CFS

Chief Scientific Officer

Dr. Marshall is Chief Scientific Officer with Eurofins Microbiology Laboratories, Inc., a division of the global life sciences company Eurofins Scientific.  He is co-founder and Director of the Food Safety Institute, LLC, an integrated consulting and analytical services company affiliated with the Eurofins network of companies.  He is Technical Director for the Refrigerated Foods Association and Microbiology Task Force Chair for the American Spice Trade Association.  His former positions include the following:

  • Associate Dean and Professor of Public Health, College of Natural and Health Sciences, University of Northern Colorado
  • Adjunct Professor with the Colorado School of Public Health and Colorado State University
  • Professor of Food Science, Nutrition, and Health Promotion at Mississippi State University
  • Assistant Professor of Food Science at Louisiana State University
  • Contributing Editor for the peer-reviewed scientific journal Food Microbiology
  • Four consecutive terms on the editorial board of the Journal of Food Protection

He is a frequent volunteer and consultant to trade associations, NIH, WHO, FAO, USDA, and other government agencies and private companies.  His research and expertise has been featured in popular press venues such as Consumer’s Reports, Fine Cooking, USA Today, Fitness, Health, Men’s Health, Chemtech, Nature Science Updates, and ASM Journal Highlights.  He is a frequently invited speaker and a prolific book chapter writer. With over 250 publications, over 300 invited presentations, and over 100 workshops delivered, his scientific research and outreach interests focus on improving the microbiological quality and safety of foods, with emphasis on meat, poultry, seafoods, and produce.  Among these was the completion of the 4 volume Handbook of Food Science, Technology, and Engineering, which he Co-Edited.  He has been the recipient of a number of awards for his scholarly efforts including the Mississippi Chemical Corporation Award of Excellence for Outstanding Work, the International Association for Food Protection Educator and Harold Barnum Industry Awards.  He is a Fellow and former member of the Board of Directors of the Institute of Food Technologists, inaugural Chair of the International Food Science Certification Commission, and former member of the Board of Directors of the American Spice Trade Association. 

On a personal note, early in his career he served as a deck hand on an Alaskan fishing vessel (well before Deadliest Catch) and prefers to spend his free time lost on a trail in the Colorado Rocky Mountains.

Below are resources from Douglas:



Join Eurofins Senior Staff Scientist, Lukas Vaclavik, for a discussion about per- and poly-fluoroalkyl substances (PFAS) in the food industry. Original airdate July 19, 2023.


In this presentation, Dr. DeMarco illustrates how positive pathogen results can be used to make real improvements in processes, facilitating a safer production environment with lower overall contamination risks and safer food for the consumer. Original airdate July 12, 2023.


This webinar discusses what is flow cytometry, advantages and disadvantages of flow cytometry, and marketplace examples and investigative case studies. Original airdate June 27, 2023.


In this webinar, Jeff Stassi and Lukas Vaclavik will discuss testing for both contaminants and adulterants in your products. Also, the importance of designing the proper monitoring program to ensure your products are safe and compliant. Original airdate June 20, 2023.


In this webinar we review the call to action from the FDA, provide an overview of the technology of whole genome sequencing. Discuss the benefits of whole genome sequencing, and review the ways that Eurofins is ready to support your testing needs. Original Air Date May 18, 2023


Watch this on-demand webinar to learn about the significant organic food industry growth. The webinar provides an overview of the impact of SOE on certified entities, and a discussion on how to build risk management systems to meet regulatory and consumer expectations for your products' organic integrity. Original airdate April 19, 2023.


Is your risk assessment complete? E.coli, Listeria, Salmonella, Campylobacter, Vibrio, etc. The long list of bacterial pathogens have become common to those managing & developing food safety plans. However, when sitting down for your review of hazards in your HACCP & HARPC plans, it can be easy to forget that bacteria aren’t the only microbes associated with food. In fact, a large share of foodborne illness are caused by viral threats.


Learn how infrared spectroscopy can unleash the power of quality data for your operations. Original airdate April 26, 2023.


In this webinar Dr. Demarco, Associate Scientific Director of Eurofins Microbiology, discusses problems from the perspective of the spice manufacturer, rapid and conventional cultural methods most commonly used when testing for pathogens in spices, issues with testing methods and most commonly used approaches to circumvent them, as well as opportunities for improvements.  Original airdate April 27, 2023.


Managing food safety & quality in fruit & vegetable processing is challenging and extremely dynamic; variable supply chains, seasonal quality issues, minimal pathogen mitigations, and short shelf-life often leaves little time to make critical decisions.


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