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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:



Contaminants like ochratoxin A in botanicals and aflatoxins in raw materials pose serious risks to product quality and consumer health. Targeted mycotoxin testing for supplements is critical to meet global compliance standards and protect your brand from costly recalls or regulatory action. Click to learn more.


Testing complex botanical matrices using HPTLC goes beyond simply running a sample through a machine—it requires a deep understanding of both the plant material’s unique properties and the strengths and limitations of HPTLC. In this article, we’ll explore the intricacies of testing complex botanical samples using HPTLC, highlighting the challenges involved and how this technique can effectively overcome them—even in the most complex matrices.


(HPTLC) has established itself as the preferred analytical tool for identification of botanical samples. As with any analytical method, validating the HPTLC method is crucial to ensure that it produces reliable, accurate, and reproducible results. In this article, we will explore the process of HPTLC method validation, why it is necessary, and the critical parameters to consider.


As winter melts away and the promise of spring invites renewal, it's the perfect time to think about new beginnings, especially when it comes to nurturing our bodies. Join us as we embark on a journey exploring plants that promote women’s health and well-being.


October 2024 - Eurofins Botanicals is proud to announce the first-of-its-kind partnership with LeafWorks to launch the industry’s first Mushroom DNA Species Identification Tests. The first DNA ID tests will focus on Shiitake and Cordyceps species, with additional mushroom tests being released in 2025.


In this on-demand webinar Cris Amarillas will guide you through the essentials of botanical identity testing. Original Air Date October 16, 2024.


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.


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