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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 probiotic consumption rates continue to grow, stakeholders are demanding more information about the quantity, quality, and identity of organisms in probiotic products. Increasingly, flow cytometry is being used to address manufacturers’ and consumers’ demands, and has shown promise in rapidly providing precise quantitative and qualitative probiotic information.




This poster describes some of the work Eurofins has conducted on procedures to help control the quality of agave syrups.


Salmonella depends on an effective food safety program supported by robust Salmonella detection methods. Our objective is to explore recovery of Salmonella from a background of probiotic cultures and demonstrate and validate as effective, sensitive method for detecting Salmonella in probiotic cultures to protect public health.


Originally showcased at the 2016 annual AOAC meeting, this poster presents data for the “new” variety that will be valuable to anyone who buys or uses this type of fruit for processing.


This Proposition 65 Guide will help food, ingredient, and supplement companies navigate the regulatory and testing challenges that Proposition 65 presents when selling products into the state of California.


Collecting environment samples in an aseptic manner is critical to ensuring the quality of the testing results. Eurofins Microbiology has updated our guide to effective environmental swabbing.


Eurofins’ Pesticide Residue Monitoring Plan provides an understanding of how to implement a pesticide residue monitoring plan.


Eurofins Nutrition Analysis Center has released the inaugural Nutrition Labeling Guide. The guide encompasses NLEA requirements and more.


Eurofins’ Arsenic Testing Guide provides awareness of arsenic in food and the importance of detecting both inorganic and organic forms.


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