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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:



Understand what an acidified food is, the regulations associated with acidified foods, and different sterilization techniques (thermal processing and cold-fill-hold) for various food products. This guide will help you to determine the classification of a food, and provide resources to aid in processing, FDA filing, and where to go to with further questions.


October 2024 - Eurofins Botanicals is proud to announce the first-of-its-kind partnership with LeafWorks to launch the industry’s first Mushroom DNA Species Identification Tests. The first DNA ID tests will focus on Shiitake and Cordyceps species, with additional mushroom tests being released in 2025.


The effectiveness of a preservative or antimicrobial product is critical in ensuring the safety of a food product and extending its shelf life. This article helps you to understand the basic considerations of preservative and antimicrobial efficacy testing, including determining a minimum inhibitory concentration (MIC), giving you the background needed to select the best test methods for your food product evaluation.


In this blog, we help you decipher high-level changes coming with Pet Food Label Modernization (PFLM), as well as how to be prepared for the updated guidelines for pet food products.


Learn about ICH M10 and its significance in bioanalytical method validation for veterinary products. Get insights and tips from our latest blog post.
Keywords: Blog Animal Health


Enhance your Research and Development capability with Eurofins. Overcome challenges in laboratory capability and regulatory compliance.
Keywords: Blog Animal Health


In this blog, we will take a deep dive into the significance of chlortetracycline in animal feed, Eurofins' analytical methods for its detection, and the pivotal role the company plays in safeguarding animal health and industry standards.
Keywords: Blog Animal Health


Stay informed on FDA recommendations for florfenicol use in aquaculture medicated feed. Explore our blog for the latest updates.


Eurofins’ laboratories are frequently asked questions about microbial indicator testing. This whitepaper will attempt to answer the most common questions and give an overview of the uses and benefits of testing for microbial indicators.


Get the latest insights on the Innovative FEED Act and its significance for animal feed ingredients. Read our blog for more information.


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