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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:



Because of the potential consumer health and economic risks associated with mycotoxin contamination, it’s critical to fully understand the food production and safety challenges presented by mycotoxins. Our infographic answers the following frequently asked questions to provide insight into addressing these concerns.


Iodine is an essential trace element found in many food sources as well as the environment. AAFCO recognizes iodine as an essential nutrient for both dogs and cats at differing, species specific levels. This infographic explains explores considerations for iodine in pet food and reasons to test for it.


Bringing food and beverage ideas to market takes more than creativity—it demands technical expertise, strategic planning, and cross-functional collaboration. This roadmap infographic highlights the seven stages from idea to product launch.


California Bill 899 aims to safeguard public health by strengthening regulations around product safety. Its potential impact on baby food testing is particularly critical, as it addresses the need for heightened scrutiny in this vital industry. Check out our infographic to learn about the new requirements and why they matter.


Two Notices of Proposed Rulemaking (NPRMs) were published on January 17th, 2025 regarding labeling of alcoholic beverages regulated by the federal Alcohol and Tobacco Tax and Trade Bureau (TTB) under the Federal Alcohol Administration Act. Check out our infographic to learn about the proposed rules' components and exemptions.


Historically, testing for chondroitin sulfate and glucosamine has been done via HPLC-UV analysis via methods from AOAC or USP-NF monographs, which are not suitable for complex matrices such as pet food. Check out our infographic about an innovative solution developed specifically for pet foods and supplements.


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.


When you submit a sample to the laboratory for microbiology testing, what happens? Follow a Listeria spp. sample through the lab workflow in this infographic.


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.


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