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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 also 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.  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
  • 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 and over 180 invited presentations, his scientific research and outreach interests focus on improving the microbiological quality and safety of foods.  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, former 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:



In this blog, we will take a deep dive into the significance of chlortetracycline in animal feed, Eurofins' analytical methods for its detection, and the pivotal role the company plays in safeguarding animal health and industry standards.
Keywords: Blog Animal Health


Stay informed on FDA recommendations for florfenicol use in aquaculture medicated feed. Explore our blog for the latest updates.


Eurofins’ laboratories are frequently asked questions about microbial indicator testing. This whitepaper will attempt to answer the most common questions and give an overview of the uses and benefits of testing for microbial indicators.


Get the latest insights on the Innovative FEED Act and its significance for animal feed ingredients. Read our blog for more information.


An outline of a few of the key qualities and considerations of the BACGene real-time PCR pathogen detection system, and how they translate to information you can use to be knowledgeable on your current and future pathogen testing decisions.


Do you need microbial testing for your food products? Learn the importance of microbial challenge testing to ensure food safety and quality.


As a food manufacturer, you have several options for adding sweetness to your product, including sugars, sugar alcohols, and artificial sweeteners. But how do they compare, and how do they impact the caloric content of your final product?
Keywords: Blog Nutritional


Launching a pet food or pet treat company can be an exciting journey, but ensuring the safety, quality, and compliance of your products is crucial for success. Not sure where to start? There's where we can help.


In a recent webinar, Understanding PFAS in the Food Industry: Regulations, Testing Methods, and Safety Measures, Lukas Vaclavik, Eurofins Senior Staff Scientist, discussed per- and poly-fluoroalkyl substances (PFAS) in the food industry. After the webinar there was a Q&A, this is a summary of the discussion.


How does Prop 65 relate to dietary supplements? How do I test for heavy metals in dietary supplements to ensure compliance with Prop 65? Is Prop 65 specific to California? Get the answers to these questions and more!


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