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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:



In this informative conversation between Vanessa Snyder and Grace Bandong they discuss contaminant testing in hemp and CBD products and why it is important. Grace tells companies the importance of testing for contaminants and gives advice for when and what to test.


The quality and safety of infant formula and baby food are a major concern for parents, public health authorities, and regulatory bodies worldwide. Infant formula and baby food producers need to design comprehensive testing plans to ensure that their supply chain and finished products are free of harmful chemicals and pathogens. In this article Lukas Vaclavik, Contaminants Senior Staff Scientist for Eurofins Food Chemistry Testing discusses potential contaminants, the challenges and solutions around testing for contaminants and pesticide residues.


In this white paper, you'll learn more about the details of Section 402(a)(1) of the Food Drug and Cosmetic Act that defines adulteration. What is considered contamination? How it can happen. What levels of extraneous material are acceptable? Filth analysis should be part of any HACCP plan that requires examination of raw material.


Eurofins presents a validation of USP <467> residual solvent methodology for testing on CBD and hemp-based products at the North American Chemical Residue Workshop.


In this document, you will see the list of chemicals on the Proposition 65 list and learn how Eurofins is prepared to help you develop your products, qualify your supply chain, and conduct ongoing quality control to minimize the risk of incomplete labeling.


Read this article to learn more about hemp contaminant testing and how you can be prepared to correctly test your hemp-derived products.


This paper discusses the theory behind supercritical fluids, key method information, and the benefits to testing fat soluble vitamins in supplements as well as mycotoxins in food products by this unique and green chemistry methodology.


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.


In this digital conference Eurofins experts, industry partners and food safety thought leaders guide attendees through a discussion of the latest solutions and controls for persistent pet food manufacturing issues.


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


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