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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:



A2 beta-casein milk is gaining popularity as the health-oriented consumer base grows. Reliable A2 products start with pure A2 raw milk. Traditional genetic testing is limited to single cows and raw products. Eurofins offers assay and LC-MS/MS methods to test beta-casein protein levels in raw milk from individual cows and batches, as well as finished products. This article covers the science behind A2 beta-casein and the testing options at Eurofins DQCI.


A2 beta-casein milk is growing in popularity as consumers learn about the potential health effects of the A1 beta-casein variant. Understanding the testing options is the first step for brands and retailers to provide trustworthy A2 dairy product. This video explains the science of A2 beta-casein milk and the unique testing options at Eurofins.


August 5, 2022, Eurofins Craft Technologies’ newly validated phenolic method will initially offer 16 analytes and will continue to expand based on market demands. The new offering covers the following hydroxybenzoic, cinnamic, and hydroxycinnamic acids. Read the full press release to learn more.


Food fraud can result in serious public health consequences and damage to your brand's reputation. Learn about products at risk for food fraud and steps you can take to protect your company.


As popularity of dietary supplements continues to grow, recent challenges in supply chain have shown an emergent growth in adulteration. Find out more on what the problem with adulteration is, and how is it being addressed.


Validated methods are essential to reliable botanical testing. Method validation and development ensures analytical approaches are applicable to specific ingredients and provide accurate results. The process of method development and validation are outlined.


Botanical reference materials play a critical role in herbal product testing. Learn about the importance of botanical reference materials, and how choosing a lab with a large reference material library impacts analytical outputs.


Analytical method development and validation is a complex topic; in this webinar, Josh Rhein and Leo Schilling attempt to break it down for you and discuss some best practices.


In this informative webinar, Eurofins SF Analytical scientists explain the considerations your company should factor in to mitigate risk and comply with applicable regulations including new analytical techniques to meet the ever-changing compendia (USP, EP, ACS, FCC/NF, JECFA, etc.)


Learn more about the similarities and differences between the terms: fraud, defense, authenticity, and adulteration when it comes to foods, ingredients, and supplements.


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