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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:



Watch this on-demand webinar featuring industry experts, as they explore the analytical considerations for non-routine investigations of failures and losses in the wine, spirits, and beverage industry. Original airdate May 22, 2024.


In this webinar Jamie Willems, Ph.D. and Lily Zehfus, M.Sc. discuss common causes of off-odor, off-flavor, and flavor scalping issues as well as GC-MS techniques for troubleshooting. Original airdate September 12, 2023.


Eurofins SFA SN Special Analysis West is pleased to announce the relocation of its DEA/GLP-compliant facility from a legacy facility at 2021 E. 4th St, Santa Ana, CA to a new, 3,800+ square foot state-of-the-art facility located at 2841 Dow Avenue, Tustin, CA


Eurofins accepted a request to perform testing compliant with 21 CFR Parts 210/211 on an excipient material for over-the-counter pharmaceutical products and develop specific test methods to support the risk assessment of the manufacturing process and batch release. Read about what happened in response to the OOS test results.


Chemical and microbial exposure are the most common types of contamination during food processing. Understanding the sources of each type of contamination helps to effectively prevent problems before they arise. This infographic below explains various contamination sources in food, feed, and botanical products. These include residual solvents, storage issues, improper handling, and more.


Foreign materials in products can be dangerous to consumers and damage a brand's reputation. At Eurofins, we have the expertise and experience to handle all kinds of foreign material investigations, including issues in food and beverage packaging. This case study outlines how we used analytical chemistry approaches, including LC-MS. GC-MS, and FTIR to identify a contaminant causing a bitter taste in Jello Shots


Foreign materials in products can be dangerous to consumers and damage a brand's reputation. At Eurofins, we have the expertise and experience to handle all kinds of foreign material investigations, including issues in pharmaceuticals and dietary supplements. This case study outlines how we used microbial culture methods and 16S PCR to identify a bacterial contaminant and prevent future issues.


Foreign materials in products can be dangerous to consumers and damage a brand's reputation. At Eurofins, we have the expertise and experience to handle all kinds of foreign material investigations, including issues in pharmaceuticals and dietary supplements. This case study outlines how we used soot, ash, and char analysis to help a client avoid weeks of factory closure following a small fire.


Foreign materials in products can be dangerous to consumers and damage a brand's reputation. At Eurofins, we have the expertise and experience to handle all kinds of foreign material investigations, including issues in pharmaceuticals and dietary supplements. This case study outlines how we used microscopy and elemental analysis to determine the cause of discoloration in a pharmaceutical tablet.


Foreign materials in products can be dangerous to consumers and damage a brand's reputation. At Eurofins, we have the expertise and experience to handle all kinds of foreign material investigations, including complaints of rodents in hamburger buns! This case study walks through how we helped a client avoid legal action by using microscopy and chemical analysis to prove their buns are not contaminated.


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