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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 May, the Trump Administration released the Make Our Children Healthy Again report—commonly referred to as the MAHA Report. As a new conversation unfolds, let Eurofins help you dive into its implications for the food industry through a series of weekly posts. While the report spans a broad range of topics, our lens will remain focused on the food, beverage, and consumer goods sectors—where we continue to support companies navigating change and driving innovation. Keep reading to find out more on MAHA Report.


Discover how the Eurofins Botanicals and LeafWorks partnership are advancing transparency in the booming functional mushroom market with species-specific DNA ID testing. Ensure product authenticity, support label claims, and meet regulatory standards with cutting-edge qPCR assays and comprehensive analytical solutions.


In the world of dietary supplements, where natural ingredients are marketed for health and wellness, the quality and identity of botanicals are non-negotiable. Consumers rely on accurate labeling, consistent formulation, and, most importantly, safe and authentic ingredients. Continue reading to learn more about ensuring safety in botanical supplement products.


Accurate determination of creatine and its degradation product, creatinine, in raw materials and finished products is essential for quality control and regulatory compliance. This webinar will provide an overview of best practices in HPLC creatine and creatinine testing in diverse range of products, including protein powders, pre-workout formulations, beverages, and gummies. Originally Recorded on August 8, 2025


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.


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