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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:



Arsenic is naturally occurring all around us, but that doesn't mean it's always safe to consume. Consumers are looking to companies to test their products, know their levels, and keep them safe. Learn more about the different forms of arsenic and relative risk for presence in products.


Products marketed for bodybuilding, energy enhancement, and weight loss are sometimes adulterated with anabolic agents, stimulants, or pharmaceuticals. The industry has found that more than 14% of these supplements are adulterated. Find out more why adulteration in sports nutrition is so prevalent and what can be done to help prevent adulteration in your products.


Contaminated peanut butter recalls have wreaked havoc on the food industry. By understanding how to prevent and mitigate risk of Salmonella contamination, we can prevent economic loss and illness. Learn more in this article about why it keeps happening.


As popularity of dietary supplements continues to grow, recent challenges in supply chain have shown an emergent growth in adulteration. Find out more on what the problem with adulteration is, and how is it being addressed.


Pyrrolizidine alkaloids are a wide group of natural toxins that present a potential risk to consumers. Find out more if your dietary supplements or herbal supplements are at risk and how to test and verify your product's safety for consumers.


The USDA establishes a new standard for disclosing bioengineered food. Does the mandate apply to you? Read to learn more.


Developing a product requires careful consideration of storage, transport, and retail conditions. Spoilage organism testing helps determine the risk of bacterial spoilage under different conditions. Additionally, spoilage testing can be added to routine microbiology testing to ensure continued product quality and safety.


Indicator organisms are groups of microbes that are correlated with other groups. In other words, the presence of one indicates the presence of another. So, indicator testing detects a small group of pathogens instead of running over 30 tests to look for all potential harmful groups. This reduces testing times and costs.


Which food labeling rule applies to your food product? Learn more about USDA and FDA Food Labeling guidelines, coverage, and differences.


PFAS have valuable uses and extreme chemical stability, but can lead to adverse health outcomes. Learn why PFAS testing in foods is now becoming an essential need for your food and supplement products in the market.


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