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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 also 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.  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
  • 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 and over 180 invited presentations, his scientific research and outreach interests focus on improving the microbiological quality and safety of foods.  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, former 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:



Eurofins presents at AOAC 2020 Virtual Annual Meeting & Exposition. Adulteration to fruit juices has been a long-standing problem in food processing. While analytical tests exist to detect cheaper juices in more expensive ones, an ongoing problem arises when lime juice is blended with lemon juice. Due to their chemical similarities, this requires new in-depth methods.


This presentation is focused on potential hemp regulations and their related dietary supplement regulations.   Some topics during this discussion include section 321(ff)(3)(B) of the FD&C Act and its impact on hemp ingredients, new dietary ingredient requirements and preparation to meet federal regulations for dietary supplements, including dietary supplement Good Manufacturing Practices, should FDA or Congress recognize hemp extracts as lawful dietary ingredients.


In this poster, Eurofins describes how the utility of flow cytometry was expanded further by applying modifications to ISO 19344(B) in order to accurately quantify the yeast in the sample.


This poster compares BACGene Real-Time PCR and BAX® System PCR Methods for the Detection of Salmonella in Pet Food.


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


To address the industrial needs for rapid and economic analysis of steviol glycoside products we developed and validated a method. This method has the potential to be adapted as an industrial standard for the rapid and economic analysis for testing steviol glycosides.


Check out this informative email exchange between Keren Breiterman and Darryl Sullivan about trends in the Infant Formula testing space.


If you are seeking your initial GFSI benchmarked certification and aren’t sure if you are ready, a pre-assessment audit is a great tool to verify your readiness.


In this article, we will make the case for a testing program for your hemp business that you can implement today that will help prepare you for the regulations to come.


Choosing a reputable hemp testing lab can be difficult and time-consuming. We have put together a checklist of information your hemp company should consider when vetting and selecting a hemp testing partner.


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