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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:



Are ATP swabs adequate enough for monitoring environmental contamination in your facility? Our Chief Scientific Officer, Dr. Doug Marshall explains industry best practices and what might be the best approach. Eurofins publishes our Ask an Expert Series weekly on our social media platforms.


Should you be testing for Listeria species or Listeria monocytogenes? It is difficult question but one that Karissa Roadhouse from our Eurofins Microbiology lab in Louisville, KY helps us understand better in this short video. Eurofins publishes our Ask an Expert Series weekly on our social media platforms.


Eurofins scientists explain the difference between reporting your microbiology testing in colony forming units (CFU) or as Most Probable Number (MPN) per unit of measure. Are they interchangeable? Learn more!


At Eurofins, ExpressMicro samples arrive at the lab in the early morning hours, six to eleven hours earlier than other labs—and we deliver results up to eight hours faster than standard next-day air shipping.


Eurofins Microbiology network has a one-stop-shop approach that allows you to work with one lab, receive one report, and one invoice saving you both time and money.
Keywords: Video Microbiology


The experts at Eurofins have identified some key considerations for environment sample collection that will help ensure quality results. These quick tips will help you build a solid foundation for detecting facility risks as you conduct your environmental monitoring programs.


The Eurofins network of laboratories has multiple laboratories that have been specifically outfitted to meet customer's needs for shelf life and product stability testing.


Step inside Eurofins Food Microbiology laboratory for a tour! Learn more about the innovations in service and technology that our labs are using to make testing easier for our customers.


Curious what exactly food fraud entails? Take a look at food fraud practices with Eurofins. We are exploring the topic of food fraud and what exactly that terminology means.


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