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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:



A supplement manufacturer added methylcobalamin (Vitamin B12) to a product, expecting to meet label claims. However, testing revealed only ~50% of the claimed amount, triggering an out-of-spec (OOS) result. Read to learn how Eurofins Supplement Testing resolved the unexpected results.


Switching oil sources, or developing a new product with an alternative oil, requires more than a label change. It demands a holistic view of how the oil behaves in your product, how it interacts with other ingredients, and how it holds up over time. Click to learn about the key considerations.


Protein analysis is typically based on a Nitrogen analysis and assumed factors to calculate protein. Since proteins are not the only source of Nitrogen, Protein analysis can be falsely inflated by a variety of ingredients and other food components. Check out this infographic to learn more about non-protein nitrogen.


The bar aisle is brimming with possibilities—and today’s consumers are more curious and discerning than ever. As expectations rise around flavor, texture, and ingredient transparency, brands have a unique chance to reimagine what a bar can be. This webinar explores the dynamic evolution of the bar category, especially protein bars, and reveals how thoughtful innovation can help your brand rise above the noise and truly connect with consumers. Originally Aired on November 5, 2025


After months of fine-tuning flavor, texture, and active ingredients, a new nutritional formula was ready for scale-up. This case study explores the successful transition from lab-scale to full-scale production—preserving product integrity across thousands of gallons.


Join us for a focused session on Eurofins’ new Product Certification program—designed to set a higher standard for quality and transparency across the dietary supplement, food, and retail industries. Learn why certification matters, how the process works, and what makes Eurofins uniquely qualified to deliver a seal backed by nearly 100 years of testing expertise.


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.


Whole genome sequencing is no longer just a research tool. It’s a critical asset in food safety, outbreak response, and public health protection. Read our blog to learn more about whole genome sequencing and how it helps us better understand organisms like Salmonella and Cronobacter in food and infant formula.


Explore why technical diligence is critical in food & beverage M&A. Learn how Eurofins helps private equity firms assess scalability, supply chain stability, and innovation pipelines to reduce risk and drive growth.



https://www.eurofinsus.com/food-testing