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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:



A2 beta-casein milk is growing in popularity as consumers learn about the potential health effects of the A1 beta-casein variant. Understanding the testing options is the first step for brands and retailers to provide trustworthy A2 dairy product. This video explains the science of A2 beta-casein milk and the unique testing options at Eurofins.


A client requested testing for the cGMP-compliant analysis of cattle feed medicated with monensin. Watch our case study video below to learn how Eurofins Animal Health Testing evaluated and validated AOAC Official Method 2006.01 Monensin, Narasin, and Salinomycin in Mineral Premixes, Supplements, and Animal Feeds.


Some minerals are found to interfere with vitamin K2 shelf-life stability in nutraceuticals. Watch our video case study to learn how Eurofins Craft Technologies assists clients experiencing formulation challenges.


TMR is a high-moisture, non-homogenous sample matrix. This mixture of feed ingredients is challenging to mill and blend for good lab testing. Watch our case study video to learn more.


Is stability testing required for infant formula? Tammy Olson, Stability Manager at Eurofins Food Chemistry Testing in Madison, WI discusses this topic in this short video. Eurofins publishes our Ask an Expert Series weekly on our social media platforms.


How can FT-IR be used for identifying foreign material in my product? David Riggs, President of Eurofins SF Analytical discusses this topic in this short video. Eurofins publishes our Ask an Expert Series weekly on our social media platforms.


How often does infant formula require testing? Keren Breiterman of Eurofins Food Chemistry Testing in Madison, WI discusses this topic in this short video. Eurofins publishes our Ask an Expert Series weekly on our social media platforms.


How do you determine the identity of a unknown material I found in my product? Patricia Quinn from Eurofins SF Analytical in New Berlin, WI discusses this topic in this short video. Eurofins publishes our Ask an Expert Series weekly on our social media platforms.


Why was the genus Lactobacillus reclassified? Andrzej Benkowski, Technical Leader from Eurofins Microbiology in Madison, WI discusses this topic in this short video. Eurofins publishes our Ask an Expert Series weekly on our social media platforms.


Is "not detected" the same as "absent"? David Legan, Ph.D. from Eurofins Microbiology in Madison, WI discusses this topic in this short video.


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