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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:



Our "Behind the Science" series looks at food testing from the perspective of the testers and industry experts who devote their careers to it. In this episode, Eurofins Chief Scientific Officer, Dr. Doug Marshall speaks with Senior Analytical Services Manager, Mollie Van Alst about "healthy" labeling claims. Originally recorded on April 23, 2025


Ensuring high-quality ingredients and finished botanical products requires a precise and reliable analytical method. This webinar introduces a fundamental approach to botanical analysis: High Performance Thin Layer Chromatography (HPTLC), a powerful tool for maintaining accuracy and consistency in botanical raw materials and final formulations. Originally Aired on April 21, 2025


Watch this webinar for a discussion on the background behind AAFCO’s recommended method and other commonly used methods, with a focus on which dietary fiber component each method quantifies, and scenarios where it is appropriate to use an alternate method. Original Air Date: April 16, 2025


Analytical chemistry and materials science play pivotal roles in the solution of complex issues over a wide array of sectors ranging from accident investigations to contaminated food products. Only with reliable and timely data can investigators begin to elucidate what occurred and why. Typically, this involves close collaboration between a client and the scientists who will translate the client’s goals into actionable test plans that will ultimately generate the information necessary to understand the root cause of an issue. Watch this webinar for an explanation and examples of this collaborative process with case studies.


When it comes to food safety and regulatory compliance, acidified foods stand out as a unique category that demands careful attention. These shelf-stable products, ranging from pickled vegetables to tangy condiments, rely on precise pH control and proper processing to ensure they remain safe and stable for consumers. In this webinar, we’ll simplify the complexities of acid and acidified foods, breaking down key factors regarding microbiological safety, stability, and regulatory compliance. 


Join experts from two leading Eurofins labs in this in-depth webinar as they break down the latest preservative testing methodologies, covering both natural and synthetic preservatives.


This webinar explores approaches to method and monograph development while maintaining safety and quality standards specific to the OTC and Dietary Supplement industries. The speakers share industry insights regarding current state and potential changes with a changing administration. Original Air Date: February 24, 2025.


In this on-demand webinar about controlling listeria, Dr. Douglas Marshall discusses some common sampling and testing practices and highlight risks associated with their use. Original Air Date: January 22, 2025.


In this on-demand webinar, Mollie Van Alst provides a straight-forward explanation of the FDA's proposed changes to the definition of "healthy" on food labels. Original Air Date November 7, 2024.


In this on-demand webinar Cris Amarillas will guide you through the essentials of botanical identity testing. Original Air Date October 16, 2024.


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