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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:



Bacillus consists of a wide range of species from pathogenic types to beneficial bacteria. Bacillus coagulans, specifically, is commonly used in various products due to its survivability of many processing conditions as well as long shelf life needs. So, how would you test for the pathogen, Bacillus cereus, in a product containing Bacillus coagulans? Our Principle Scientist, Megan Brown, discussed more on this topic and what to keep in mind.


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.


Eurofins Craft Technologies Offers Vitamin K-1 & K-2 Testing to Support Trending Immunity Foods & Supplements.


Eurofins now offers validated methods for chondroitin testing on sports nutrition and joint health supplements.


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


In this presentation, USP and Eurofins Microbiology provided an overview of USP microbiology methods tests for microbial contamination in dietary supplements, CBD/hemp products, and probiotics. The session included an in-depth discussion regarding the importance of suitability testing, and a comparison of USP methodology to AOAC/FDA BAM methodology. USP also provided an update on new USP chapters and shared insight on what is on the horizon for USP methods.


In this document, you will see the list of chemicals on the Proposition 65 list and learn how Eurofins is prepared to help you develop your products, qualify your supply chain, and conduct ongoing quality control to minimize the risk of incomplete labeling.


This document describes the nutrition and supplement facts labels changes.


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