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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:



Discover how GLP-1 medications are reshaping consumer behavior and driving innovation in food, beverage, and supplement industries , ushering in the “smaller-appetite era” of nutrition and wellness.


Eurofins Food Chemistry Testing, Madison and Eurofins Assurance are pleased to announce the launch of Clean Sport Certified. This Product Certification programme is designed to safeguard the quality of dietary supplements, ingredients and food intended for athletes. Brands, retailers, and facilities in the dietary supplements industry can leverage this programme to demonstrate their commitment to regulatory compliance and quality. Click to learn more about this new certification.


Discover how dietary supplement companies can proactively mitigate risk—from sourcing to packaging—to protect product integrity, brand reputation, and consumer trust.


Have questions about the Eurofins ANSI 173 Finished Dietary Supplement and Ingredient Certification or Eurofins Protocol 101? Check out our guide for the answers to frequently asked questions regarding Eurofins Certification.


Discover expert insights into navigating Out-of-Specification (OOS) results and CAPA investigations. Learn key steps and strategies our technical team uses to resolve unexpected analytical outcomes effectively.


Explore a real-world OOS case study where collaborative investigation revealed formulation challenges as the root cause. Learn how targeted troubleshooting helped a client improve product consistency and manufacturing protocols.


Learn how a lab resolved inconsistent OOS results in a vitamin chew by identifying a wax-related dissolution issue. Discover how method adjustments and tailored procedural notes improved accuracy for unique formulations.


As consumer demand for cleaner labels and naturally derived ingredients continues to rise, many manufacturers of OTC and dietary supplement products are reformulating to remove artificial colors and dyes. While this shift aligns with market trends, it introduces significant challenges—especially when it comes to product stability.


Get key insights from the MAHA Commission’s second report, released September 9, outlining strategic steps for implementation and updates to its original findings.


Discover why analytical testing is essential for dietary supplement and confectionery brands reformulating with natural colors—ensuring compliance, quality, and consumer trust.


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