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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:



Pathogen testing is a key part of product development. It can prevent foodborne outbreaks and protect consumers' health and brand reputation. Before developing a testing plan, it is important to understand how any why testing is conducted. This White Paper provides an overview of the types of pathogens to test for and the testing options at Eurofins.


Natural and synthetic food dyes are used in almost all industries. Understanding the potential for dye adulteration is critical to knowing how and why products are affected. Furthermore, testing with a third-party lab can lead to standardized product coloration and reliable ingredient claims. This White Paper introduces the types of food dyes, the benefits of testing, types of tests, and considerations for choosing a third-party lab.


When a product doesn't taste or smell right, it is a good indicator of contamination or packaging and processing issues. GCMS analysis is reliable method for finding the cause of off-odor or flavor and getting your products back to normal! This infographic provides an overview and a case study of how GCMS is used for off-odor and flavor analysis.


This webinar outlines the concept, design and execution of appropriate validation strategies and procedures intended to mitigate microbiological hazards in Low-Water Activity Foods. In the context of FDA regulations, low-water activity foods (LWAF) are those products with a water activity (aw) of less than 0.85. For many decades, these products were believed to present a low microbiological hazard risk. Various food related illness outbreaks, starting with a massive outbreak of salmonellosis due to peanut butter consumption in 2008-2009, raised awareness of the risk resulting from extended survival of pathogens in these products even in the absence of active growth. Original airdate August 23, 2022.


August 5, 2022, Eurofins Craft Technologies’ newly validated phenolic method will initially offer 16 analytes and will continue to expand based on market demands. The new offering covers the following hydroxybenzoic, cinnamic, and hydroxycinnamic acids. Read the full press release to learn more.


Learn about frequent causes of off-flavor, off-odor, and flavor scalping in packaged foods, beverages, and pet food products, including analytical techniques ranging from GCMS to ICP to LCMSMS for troubleshooting and detection, with a focus on SPME-GC-MS analysis. Learn how improper product packaging, production, or transportation issues can cause your product to be recalled. Factors that can negatively impact flavor and aroma. The analytical techniques range from GCMS to ICP to LCMSMS for troubleshooting and detection.


Food fraud can result in serious public health consequences and damage to your brand's reputation. Learn about products at risk for food fraud and steps you can take to protect your company.


Contaminated peanut butter recalls have wreaked havoc on the food industry. By understanding how to prevent and mitigate risk of Salmonella contamination, we can prevent economic loss and illness. Learn more in this article about why it keeps happening.


The U.S. Department of Agriculture (USDA) implemented the National Bioengineered Food Disclosure Standard (NBFDS) in 2022. This regulation mandates clear labeling for retail food products containing bioengineered (BE) or 'GMO' ingredients, giving consumers more insight into what they are eating. In this guide, we will explore what qualifies as a bioengineered food, which products are subject to labeling, and how businesses can comply with the regulations outlined in NBFDS.


Developing a product requires careful consideration of storage, transport, and retail conditions. Spoilage organism testing helps determine the risk of bacterial spoilage under different conditions. Additionally, spoilage testing can be added to routine microbiology testing to ensure continued product quality and safety.


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