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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:



As popularity of dietary supplements continues to grow, recent challenges in supply chain have shown an emergent growth in adulteration. Find out more on what the problem with adulteration is, and how is it being addressed.


Pyrrolizidine alkaloids are a wide group of natural toxins that present a potential risk to consumers. Find out more if your dietary supplements or herbal supplements are at risk and how to test and verify your product's safety for consumers.


A new study published in JAMA Ophthalmology has found that lutein and zeaxanthin may be better alternatives to beta-carotene for supporting those inflicted with Age-Related Eye Disease (AREDS). This additional information may mean more lutein and zeaxanthin supplements on the market and more testing needed to verify suppliers.


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.


The USDA establishes a new standard for disclosing bioengineered food. Does the mandate apply to you? Read to learn more.


Where do you start when you're looking for a laboratory to for your testing needs? Check out our checklist of steps to choosing the right lab partner for your company.


PFAS have valuable uses and extreme chemical stability, but can lead to adverse health outcomes. Learn why PFAS testing in foods is now becoming an essential need for your food and supplement products in the market.


Validated methods are essential to reliable botanical testing. Method validation and development ensures analytical approaches are applicable to specific ingredients and provide accurate results. The process of method development and validation are outlined.


Botanical reference materials play a critical role in herbal product testing. Learn about the importance of botanical reference materials, and how choosing a lab with a large reference material library impacts analytical outputs.


What goes into producing a quality dietary supplement? Check out our infographic to learn about the six major characteristics that contribute to the quality of a dietary supplements product.


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