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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.


Which food labeling rule applies to your food product? Learn more about USDA and FDA Food Labeling guidelines, coverage, and differences.


Eurofins SFA is excited to offer a new IgG protein analysis that provides improved sensitivity, better accuracy, and faster turnaround time relative to ELISA or alternative techniques offered.  The analysis is performed according to AOAC 2010.01.


Join our team of presenters at Eurofins Microbiology Laboratories for an in-depth webinar all about rapid microbiological methods. They presented on the range of methods available, as well as the technologies behind them, while also exploring factors that affect their performance.  Learn what to consider when selecting a rapid method such as sensitivity, validation status, and speed.  Practical considerations around the method applications will be addressed.


Learn about the most common food pathogens and their impact in food handling and production. Testing your products can help manage risk of contamination from pathogens. Partner with Eurofins for all of your food safety testing needs.


Eurofins DQCI Announces Partnership with Southeast Milk, Inc. (SMI) to Assume Operational Responsibility of Belleview, Florida Site. Read more about this partnership in this press release.


Instrument calibration management is the key to mass balance optimization in dairy plants. Eurofins DQCI is the dairy industry’s leading analytical laboratory, adhering to the highest standards supporting infrared and near-infrared technology worldwide.


What species of microorganisms are present in your dairy products? Learn why you need microbiome monitoring for your dairy products.


This publication will cover two additional important points: 1.) How to choose the right calibration set for your application 2.) What criteria you must have for optimal calibration samples


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