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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:



Our "Behind the Science" series looks at food testing from the perspective of the testers and industry experts who devote their careers to it. In this episode, Eurofins Chief Scientific Officer, Dr. Doug Marshall speaks with Senior Analytical Services Manager, Mollie Van Alst about "healthy" labeling claims. Originally recorded on April 23, 2025


Consumer demand for clean label, natural, and plant-based products continues to drive reformulation efforts across the food and beverage industry. One of the biggest shifts in recent years has been the move away from artificial colors (FD&C dyes) in favor of natural colorants derived from fruits, vegetables, plants, and minerals. This paper outlines the common challenges when removing artificial colorants, and shares best practices for creating stable, visually appealing, and cost-effective products using natural alternatives.


Olive growers need to accurately measure polyphenol concentrations in their raw products for downstream processing. Watch our case study video below to learn how Eurofins effectively analyzed both the complex matrix of raw olives and the simpler matrix of olive-based refined products.


Analytical chemistry and materials science play pivotal roles in the solution of complex issues over a wide array of sectors ranging from accident investigations to contaminated food products. Only with reliable and timely data can investigators begin to elucidate what occurred and why. Typically, this involves close collaboration between a client and the scientists who will translate the client’s goals into actionable test plans that will ultimately generate the information necessary to understand the root cause of an issue. Watch this webinar for an explanation and examples of this collaborative process with case studies.


When it comes to food safety and regulatory compliance, acidified foods stand out as a unique category that demands careful attention. These shelf-stable products, ranging from pickled vegetables to tangy condiments, rely on precise pH control and proper processing to ensure they remain safe and stable for consumers. In this webinar, we’ll simplify the complexities of acid and acidified foods, breaking down key factors regarding microbiological safety, stability, and regulatory compliance. 


Pesticide testing is a vital part of maintaining the safety, quality, and regulatory compliance of food products. For QA and food safety managers, understanding the right time to test for pesticides and how to navigate the complex regulatory landscape is crucial for keeping consumers safe and avoiding costly compliance issues. Click to read our guide on pesticide testing 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.


Sugar reduction is a growing priority in product development as consumers seek to address concerns related to sugar consumption. Removing sugar from a formulation presents several challenges beyond just replacing its sweetness. This article walks through considerations that must be made for a successful sugar reduction strategy.


This comprehensive guide dives into the considerations that must be taken when developing a nutritional bar product. Topics Include: • Better for You Bar formulation to meet consumer demands • Cost consideration when formulating a nutritional bar • Fiber, Sugar, and Protein ingredient functionality in a nutritional bar
Keywords: Blog Food NFL


Pilot-scale and small-batch production play a critical role in food, beverage, and dietary supplement development. These early stage runs allow companies to fine-tune formulations, troubleshoot production challenges, and test market viability before full-scale commercialization. However, without proper planning, pilot production can lead to costly setbacks. This paper outlines key considerations—including food safety, quality control, production troubleshooting, and packaging—to ensure your pilot runs set the stage for a successful market launch.


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