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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:



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.


The botanical supplement and cosmetic industries are rapidly changing, and the increase in consumer demand calls for upscaling raw material sourcing. This means there is higher pressure for scientifically-valid contaminant testing, including screens for pesticides and heavy metals, while maintaining a fast turn-around time. Watch this webinar to learn modern approaches to contaminant detection, with an emphasis on market trends, broad dietary supplement applications, and OTC cosmetics.


Watch this webinar to learn more about Human Milk Oligosaccharides and Proteins, what they are, and how they can be analyzed. The webinar will provide some background on HMOs and cover an analytical method that is capable of quantifying up to six different HMOs within infant formula and adult nutritionals and will focus on the most prevalent human milk proteins targeted for infant formula, and how modern proteomics tools are used to address the challenges of targeted protein analysis in protein rich matrices such as infant formula.


Watch this webinar to gain an understanding of the difference between the USDA and FDA labeling regulations.  Also, learn which products fall into which regulation.


Analytical method development and validation is a complex topic; in this webinar, Josh Rhein and Leo Schilling attempt to break it down for you and discuss some best practices.


This webinar focuses on best practices for testing dietary supplements with a focus on using scientifically valid test methods. Original air date: April 25, 2022


Historically, the fresh produce industry has viewed food quality and food safety as different disciplines and utilizing separate science. That is changing. The lines between food safety and quality are becoming blurred. For processors, retailers, growers and suppliers, the need to understand the intersection of food quality and safety has never been more critical. The strategic partnership between the Qfresh Lab and Eurofins was created specifically to address this need within the industry. This webinar explores how to navigate  through the combination of foods safety and quality.


This webinar discusses current analytical trends, focusing on low level cannabinoids testing and meeting stringent limits for pesticide residue testing. We briefly review navigating API and OTC testing to meet GMP requirements. Finally, we share updates related to hemp and feed, as well as the certification process of the USHA.


In this informative webinar, Eurofins SF Analytical scientists explain the considerations your company should factor in to mitigate risk and comply with applicable regulations including new analytical techniques to meet the ever-changing compendia (USP, EP, ACS, FCC/NF, JECFA, etc.)


Ethylene oxide is a highly reactive gas used in some countries to inhibit microbial contamination in certain food products.


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