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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 pets, as in humans, glucosamine (GlcN) has been used with chondroitin sulfate in nutraceuticals to support joint health and mobility. Historically, GlcN testing has been limited to pure materials and supplements. However, Eurofins Nutrition Analysis Center has recently developed a method for testing GlcN in a wide variety of matrices. Click to learn more.


For most US Foods, protein claims are based on a protein quality measurement, called PDCAAS. PDCAAS stands for Protein Digestibility Corrected Amino Acid Score. Check out our infographic to learn more about protein quality measurement.


The goal of the FDA's proposed rule for Front-of-Package (FOP) nutrition labeling is to require easily noticeable and obvious nutrition information. Check out our infographic about the FDA's proposed rule for front-of-package (FOP) nutrition labeling.


February 17, 2025 – In response to increasing global demand for high-phenolic olive oils, Eurofins Craft Technologies Inc. has developed an innovative method for quantifying Valuable Olive Polyphenols (VOPs) in olive oil, olive leaf extracts, and other olive-derived products. Read more about the new method and applications for olive oil products.


As part of an effort to promote public health, the FDA has updated the requirements that food must meet in order to use the “healthy” claim on their labels. Our infographic gives background on the update and a high-level view of the criteria.


In this on-demand webinar, Mollie Van Alst provides a straight-forward explanation of the FDA's proposed changes to the definition of "healthy" on food labels. Original Air Date November 7, 2024.


Is your Astaxanthin natural or synthetic? Review this infographic to learn more about astaxanthin.


As a food manufacturer, you have several options for adding sweetness to your product, including sugars, sugar alcohols, and artificial sweeteners. But how do they compare, and how do they impact the caloric content of your final product?
Keywords: Blog Nutritional


Navigating the testing options and regulatory requirements for pet foods and treats gets confusing, even for long standing companies. This infographic provides an overview of the key components of a testing plan for pet foods, including nutritional analysis, microbial testing, and product formulation.


Beginning Nov 9, 2023, Eurofins Food Chemistry Testing Madison will include Allulose testing as an optional component of its primary sugar profile analysis, at no additional charge to its valued customers.


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