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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:



Chlorates and perchlorates are chlorine-based oxyanions that have emerged as contaminants of concern in the food and dietary supplement industries. These compounds are highly soluble in water and persistent in the environment, making them difficult to eliminate once introduced into the supply chain. Continue reading to learn what you can do to test for these contaminants.


Ensure compliance and product safety with Eurofins' USP Microbiology Services. Learn how USP Testing and Suitability Testing help validate methods for dietary supplements, probiotics, and botanicals while avoiding false negatives and regulatory pitfalls.


In this video, Business Unit Manager, Mallory Bolander, discusses what trends Eurofins Food Chemistry Testing Madison, Inc. is seeing across the food and dietary supplement industries and how they adapt to changing client needs.


From ancient remedies to modern lab techniques, the science of vitamins has come a long way. Vitamin analysis plays a key role in making sure we get the right nutrients, whether through supplements, food, or baby formula. Keep reading to find out how testing is becoming more precise and efficient.


In the world of dietary supplements and botanical materials, accurate identity testing is essential for product safety, regulatory compliance, and consumer confidence. One of the most effective tools in this area is Thin Layer Chromatography (TLC), particularly in its high-performance form (HPTLC). Continue reading to find an overview of HPTLC, compendial HPTLC methods, selecting a fit-for-purpose method, the acceptance criteria, and the advantages and limitations of compendial methods.


An entrepreneurial brand wanted to develop a shelf-stable liquid formula that could deliver proven joint-supporting ingredients in a convenient, consumer-friendly format. They turned to The National Food Lab for help to bring their concept from ideation to execution with scientific rigor and market-readiness. Keep reading to find out how we handle these situations.


Whether you're formulating a botanical powder, validating a nutrient claim, or verifying supplier specifications, reporting on a dry matter basis ensures that decisions are grounded in reliable, standardized data. Click to read a simple explanation of dry matter basis reporting, when it matters, and why.


Fortifying foods and dietary supplements with vitamins, minerals, and bioactives has become a key strategy for innovation and value. Understanding and planning around the LOQ is vital to protecting both your product integrity and your brand credibility. Continue reading to learn how to proactively evaluate your nutrient levels against assay capabilities.


Botanical innovation is reshaping how companies approach sourcing, formulation, and delivery. Learn how forward-thinking brands are aligning strategy, ensuring scalability, and meeting rising consumer and regulatory demands.


June 24th, 2025– In response to evolving regulatory expectations and growing public health concerns for Bisphenol A (BPA), Eurofins Food Chemistry Testing Madison, Inc. (EFCT) has expanded its advanced testing capabilities to detect and quantify BPA. Read our press release to learn more.


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