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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:



In this informative conversation between Vanessa Snyder and Grace Bandong they discuss contaminant testing in hemp and CBD products and why it is important. Grace tells companies the importance of testing for contaminants and gives advice for when and what to test.


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.


What species of microorganisms are present in your dairy products? Learn why you need microbiome monitoring for your dairy products.


The quality and safety of infant formula and baby food are a major concern for parents, public health authorities, and regulatory bodies worldwide. Infant formula and baby food producers need to design comprehensive testing plans to ensure that their supply chain and finished products are free of harmful chemicals and pathogens. In this article Lukas Vaclavik, Contaminants Senior Staff Scientist for Eurofins Food Chemistry Testing discusses potential contaminants, the challenges and solutions around testing for contaminants and pesticide residues.


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.


Oil and water don't mix, but they can be made into an emulsion. In this blog read about how emulsions in food products can pose issues for traditional analytical methods and how Eurofins rises to the challenge with specific methodology for these food products.


In this blog post Eurofins Analytical Services Manager Jeff Stassi explains why it is so important to set specifications for dietary supplements.


In this blog post Jeff Stassi, Eurofins Analytical Services Manager, gives three tips on how to make sure that you are partnering with a testing laboratory that you can trust, and that has the expertise required to analyze your product.
Keywords: Blog Supplements


Wondering which method is most appropriate for testing crude fat in your samples. Read through the answers to these frequently asked questions for guidance.


In this blog post Dan Berg, Food Scientist, Analytical Services Manager for Eurofins Food Integrity & Innovation talks through the top 10 things you should know about the new nutritional facts panel rules.


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