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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:



With so many food pathogen detection methods available deciding which is most suitable to your process, product and facility can be difficult. Read more as Eurofins dissects the pros and cons of immunoassay and molecular methodology.


This blog discusses the importance of testing aspergillus in hemp and cbd products.


It’s no secret that hemp is a fast-growing market with applications in a wide range of products from supplements to clothing. Watch this comprehensive webinar in which Eurofins experts discuss hemp testing considerations for hemp farmers and processors including genetic, microbiological, and analytical testing.


This poster—originally presented at IFT’s annual 2019 meeting—seeks to determine the robustness of LAMP pathogen assays by testing wide variations in temperature, incubation time, and other conditions, to facilitate efficient laboratory operation in “real world” conditions.


A large dairy product manufacturer expressed interest in an alternate PCR method for the detection of Genus Listeria in their environmental and product testing program due to recurring false-positive detections and high levels of environmental Genus Listeria positives in the recent past. Our objective was to compare the performance of two PCR based methods for Genus Listeria detection.


This scientific poster demonstrates how flow cytometry can be used to accurately and precisely enumerate B. coagulans and B. subtilis in a gummy matrix.


Third-party food safety testing is a surefire strategy to save money, boost quality, and increase profit margins. Find out how Eurofins can partner with your company.


Our objective was to compare the efficacy of commercially available pathogen screening platforms for detecting Salmonella in probiotic cultures to permit evidence-based platform selection.


This poster explores the use of flow cytometry in GFP-tagged Salmonella strains as positive controls for rapid qualitative Salmonella detection testing.


This poster demonstrates how DNA sequencing can be an important tool in quality control, presumptive confirmations, and environmental monitoring.


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