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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:



This poster discusses research with the purpose to validate enrichment concentration as a method for shortening enrichment times to 12 hours for Listeria testing in leafy greens.


This poster discusses research with the purpose to develop a molecular method that detects indicators of enteric pathogen contamination and requires less than six hours of enrichment.


Eurofins Microbiology Laboratories in Salinas has met this industry demand for quality, and as a result has expanded the Eurofins presence within the produce market.
Keywords: News Produce


This poster discusses research focused on the co-enrichment detection of Salmonella and STEC on produce matrices.


This poster discusses research with the purpose to demonstrate proof of concept of the EPRI tool with real-world samples by comparing against a validated pathogen method and culture.


Mushroom toxicity comes from many sources, including the soil, processing, and the mushrooms themselves. This infographic outlines sources of contamination, as well as steps to take to minimize the risk of toxins entering the food chain.


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.


The research and development team of Eurofins Microbiology Laboratories, Inc. set out to better understand STEC growth on lettuce by designing an experiment to observe the limits of detection by real-time PCR using bacteria that were cold-stressed against those grown under non-stressed conditions. This white paper explains further.


Ensure food safety of fresh produce to avoid a Cyclospora outbreak. Learn more about Cyclospora in commercial produce and how to detect and mitigate risk of contamination.


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