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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:



This poster discusses research with the purpose to evaluate the performance of a commercial real-time PCR Salmonella detection method with spice matrices having antimicrobial and PCR inhibitory properties and to determine if any method modifications are required to obtain acceptable results.


This white paper will provide a brief overview of both prevention and investigation of spoilage. By focusing on principles, it will not be able to answer every question, but rather will illustrate questions to ask during product design and failure investigations.


Microbiological specifications are tools used to help manage risk in a food business. A specification defines the limits of acceptable and unacceptable conditions at important decision points in the manufacturing and distribution continuum, from ingredient specifications to final product specifications. In this white paper we will explore the types, uses, and creation of microbiological specifications.


Are you incorporating novel or upcycled protein materials in your products? This handout describes a key issue surrounding traditional determination, calculation, and labeling of two compulsory nutrients (protein & carbohydrates) in the US Nutrition Facts Panel.


The research and development team of Eurofins Microbiology Laboratories, Inc. set out to better understand STEC growth on lettuce by designing an experiment to observe the limits of detection by real-time PCR using bacteria that were cold-stressed against those grown under non-stressed conditions. This white paper explains further.


USP <561> Articles of Botanical Origin details testing for raw materials used in pharmaceuticals. Eurofins Chemistry has expanded their methods to include raw materials, dietary supplements, and Cannabis (spp.). This brochure describes methods for measuring aflatoxins, elemental contaminants (heavy metals), and multiresidue pesticides.


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.


We are pleased to present the attached method summary for multiresidue pesticide analysis. This method is in accordance with USP 561 and EP 2.8.13. Click to learn more about the pesticides covered with this method and their limits according to USP monographs.


What tools do you have in place to prevent cross-contact of allergens in your facility? Check out our helpful and comprehensive guide to understanding and implementing a successful food allergen environmental monitoring plan.


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