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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:



How is protein quality determined and how is protein content assessed for food labeling? What is an Amino Acid Score? These questions are all answered in our blog about how PDCAAS shapes nutritional claims.


There are many ways to sell and distribute authorized food packaging materials on the US market. One pathway for introducing new food contact substances to the U.S. market is by submitting a Food Contact Notification (FCN) to the FDA for premarket approval. Watch our webinar exploring the FDA’s authorization process for new food contact substances, focusing on migration testing and safety evaluation. Originally Aired on June 4, 2025


The Scoop Podcast returns with season 2! In this first episode of the new season, host Keren Breiterman, explores the essential role of vitamins in infant formula and their impact on early development with Staff Scientist Dan Hengst.


Compendial methods used for detecting sulfur dioxide and sulfites are prone to challenges, including false positives in sulfur-rich matrices. Eurofins Food Chemistry Testing Madison, Inc. offers a solution. Click to read about the innovative LC-MS method for determining sulfur dioxide and sulfites in food products.


The FDA’s guidance to control the amount of lactose in food and supplements states lactose must not be present, so manufacturers are dependent upon the level of detection for analytical methods. Eurofins Food Chemistry Testing Madison, Inc. has recently optimized our High-Performance Anion Exchange Chromatography method for low lactose determination to improve upon the accuracy and specificity obtained across a variety of different product types when quantifying at low concentrations.


Watch this on-demand webinar to gain an understanding of the requirements of CA Bill AB 899, learn how to navigate testing, and hear some answers to commonly asked questions. Original airdate May 30, 2024.


Join host Keren Breiterman, for episode 6 of The Scoop Podcast. In this episode, Keren and guests Ed Ladwig, President, Ian Laessig, Business Unit Manager, and Marisa Feller, Business Unit Manager, Eurofins Food Chemistry Testing Madison discuss vitamin and nutrient testing in infant formula samples.


Join host Keren Breiterman, for episode 5 of The Scoop Podcast. In this episode, Keren and guest Justin Heller, Lead Technical Scientist at Eurofins SFA Micro in Horsham, PA, we discuss microbiology testing in infant formula including Cronobacter and what to look for in a microbiology lab.


Join host Keren Breiterman, for episode 4 of The Scoop Podcast. In this episode, Keren and guest Tammy Olson, Stability Program Manager at Eurofins Food Chemistry Testing in Madison, Wisconsin talk about shelf-life studies for infant formulas.


Join host Keren Breiterman, for episode 3 of The Scoop Podcast. In this episode, Keren and guests Dan Merkel, President of Product Safety Labs and Satish Patel, Business Development Director at Product Safety Labs, discuss Protein Efficiency Ratio (PER) studies, for infant formula companies.


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