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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:



Eurofins QTA offers a unique service by testing using infrared lights. Learn about what infrared is, how it works, how QTA differentiates from other providers, How to convert to infrared testing, and how to get started with QTA.


Clinical studies suggested that glucosamine has the potential to be used to relieve joint pain causing by Osteoarthritis and Rheumatoid Arthritis. We offer several methods for the characterization and quantification of glucosamine in dietary supplements and ingredients. The selection of the testing technique is dependent on the sample matrix, formulation, and the method used when establishing product specifications. Read through this article to learn more about the use of glucosamine in supplements and the options for testing methods.


In this article get answers to some frequently asked questions about sterol testing. Learn how the method is run, what matrices it is suitable for, and more.


This analysis compares BACGene Real-Time PCR and BAX® System PCR Methods for the Detection of Salmonella in Pet Food.


Our webinar hosted by Dr. Neal Craft, Chief Scientific Officer of Eurofins, explores the world of natural pigments, testing methods, and unique matrix challenges.


This poster describes the method development of the AOAC First Action 2018.16 Method: Sugar Profile by High-Performance Anion Exchange Chromatography.


Here we are in the third post of a series focusing on pet food, pet treat, and pet supplement testing considerations. We have explored guaranteed analysis and other testing considerations such as shelf life and microbes. This time around I’ll expand on a topic that people often view as less a food safety issue and more of a palatability issue: Rancidity.


This series is focused on getting new pet food, pet treat, and pet supplement businesses headed down the right path.


Whether you’re considering selling your homemade pet treats or starting a new pet treat business, one of the first steps you may find yourself tasked with is determining what a guaranteed analysis is. Figuring out how to have a product tested and what information is pertinent can be intimidating – the information in this post is intended to get you started in the right direction.


Eurofins SFA or Eurofins SF Analytical offers a wide range of food testing services. This case study highlights their Special Projects and Investigative capabilities as they take you on a guided case study, where they investigate a mysterious white residue on dog treats. Follow them every step of the way to learn how they solved this mystery!


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