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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:



As the U.S. moves toward record biofuel integration, producers face growing pressure to validate biobased fuel quality, strengthen their testing programs, and stay ahead of new regulatory expectations. Learn how Eurofins QTA is adjusting to new requirements.
Keywords: Blog On-Site


Have questions about the Eurofins’ Infant Formula Contaminant Certification or Eurofins Protocol 102? Check out our guide for the answers to frequently asked questions regarding this type of certification.


The United States Pharmacopeia (USP) is rolling out important updates to General Chapters <2021> and <2022> and, taking effect on April 1, 2026. For manufacturers who rely on microbiological testing to ensure product quality and regulatory compliance, understanding what’s changing and what actions are required is essential.


Important upcoming updates to USP Chapters <2021> and <2022 went into effect on April 1, 2026. These changes modify several microbiological testing requirements, including incubation times, suitability testing, and enrichment steps for specific organisms. Check out our answers to frequently asked questions about the updates.


Why do food companies wait for recalls instead of investing in advanced foreign object detection? A candid take on proactive food safety and ROI.
Keywords: Blog Meat


Consumers rely on sunscreen to provide dependable protection against UV radiation, one of the leading causes of skin damage, premature aging, and skin cancer. Because of this, sunscreen manufacturers face a unique responsibility: to ensure every product consistently delivers the level of protection stated on the label. Read more to why sunscreen testing matters.


With innovation comes complexity and with complexity comes risk. This is why laboratory testing isn’t just a box to check. For longevity products, it’s one of the most challenging and essential parts of responsible product development.


California’s SB 646 represents a major advancement in prenatal supplement safety. By mandating rigorous testing and transparent reporting of heavy metal levels, the state is setting a new benchmark for protecting pregnant individuals and their developing babies.


There are several challenges to testing Vitamin B12 (cobalamins) that create issues for analytical laboratories to accurately measure these compounds. Eurofins Supplement Testing in Madison, WI understands these challenges and has consistently strived to develop updated methodologies utilizing state-of-the-art technology to improve overall method performance.


For years, protein has dominated food and beverage innovation. But as the market matures and consumers become more nutrition-savvy, a new question is emerging in product development conversations: Is fiber the next protein?


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