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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:



HPTLC is a popular method for botanical identification. Click the image below to open a video and learn the basics of HPTLC and how it can benefit your products.


October 3rd, 2023 Eurofins is excited to announce that Dr. Cris Amarillas has joined the team as the Chief Science Officer, Botanicals.


Eurofins Central Analytical Laboratories (CAL) offers unrivaled expertise and an ISO 17025:2017 accreditation for all aspects of tea testing, including dried and fresh tea analysis, brewed service testing, and pesticide analysis. This flyer provides an overview of ECAL's tea offerings and the benefits of testing with Eurofins.


This blog explores botanical fraud, differences between fraud and adulteration, and the use of mitigation plans to prevent fraudulent ingredients and products. Learn about the common types of fraud and steps to take to ensure safe and accurately labeled products.


Botanical supplement contamination can be dangerous, and preventing contamination starts with understanding its sources. This infographic explains different sources of contamination in a botanical supplement's life cycle - from growing in the soil to packaging and storage.


Gummy supplements continue to trend among consumers, but this matrix can be challenging to test. How does Eurofins address these challenges? Read about the answer from Jeff Stassi, Sr. Analytical Services Manager with Eurofins Food Chemistry Testing in Madison, WI.


Phytochemicals are chemicals derived from plants used to test the purity, composition, adulteration, and potency of botanical products. Discover how plant chemistry shapes and motivates botanical product authentication.


USP <561> Articles of Botanical Origin details testing for raw materials used in pharmaceuticals. Eurofins Chemistry has expanded their methods to include raw materials, dietary supplements, and Cannabis (spp.). This brochure describes methods for measuring aflatoxins, elemental contaminants (heavy metals), and multiresidue pesticides.


Ethylene oxide is gaining attention in the food regulatory space. EtO was banned as a food fumigant in 1991 in the EU. While ethylene oxide is not banned for use in foods in the United States, it is important to understand the allowed tolerances in the US and EU, especially as regulations continue to evolve and online sales contribute to increasing overseas exports. This article outlines the uses and toxicity of EtO, US and EU regulations, and EtO analysis at Eurofins.


Food fraud is a widespread and worldwide problem. Watch this video to learn more about which products are most frequently impacted, and how it can impact your business.


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