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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:



The multidisciplinary field of food science allows us to have safer, more storage-resistant, nutritious, and better-tasting food products. Gain insights into the different science disciplines that propel the field of Food Science including food chemistry, microbiology, processing, engineering, genomics, and sensory science.


Fermented foods have gained popularity in recent years. Learn about the fermentation process, how they contribute to food sustainability and safety, and how partnering with a reputable ISO 17025 laboratory like Eurofins is essential for the success of your product.


If you are a manufacturer or sell probiotic supplements, testing for counts of probiotic strains is not always straight forward. Here are five tips you should know when it comes to testing your product and verifying your label claims.


The COVID-19 pandemic created a favorable environment for increased economically motivated adulteration of ingredients and finished products. Adulterated ingredients entering your product can result in serious risk for your company. How can you reduce your company's risk?


Learn more about the similarities and differences between the terms: fraud, defense, authenticity, and adulteration when it comes to foods, ingredients, and supplements.


Both Good Laboratory Practices (GLP) and Good Manufacturing Practices (GMP) can apply to testing needed for your raw materials and products. Learn how they apply during different phases of the product development process.


What really is dietary fiber according to the most recent FDA regulations? This blog will help break down the FDA’s most recent definition of fiber as well as provide examples of ingredients used in the industry today.


Your goal is to manufacture a safe product that meets the claims on your label.  How are you ensuring that your finished product will do this?  Proactively, or retroactively?  Putting a proactive plan in place to assess ingredient safety and quality is key to producing finished products that meet all of your quality standards.  Having a partnership with an accredited, independent (third-party) laboratory just in case something goes wrong is a must.


New options for sweetening low-sugar foods have entered the market. Testing of sweetener ingredients and the finished product is key.


Dietary supplement using immune-based ingredients have significantly increased over the last few years. Learn more on which trendy ingredients are being used and how to comply with the FDA guidelines on dietary supplements and functional food products.


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