J. David Legan, PhD
Director of Science
David earned his Ph.D. in Food Technology from the University of Reading in the UK by modeling the ecology of mixed microbial populations, and then moved to Campden BRI in a variety of microbiological food safety research and client service roles. During that time, he was project lead for the Bacillus component of the UK’s pathogen modeling program. He moved again to Nabisco Research in New Jersey where he ran the corporate microbiology lab and developed a program of preservation technology development and microbial modeling. After the Kraft Foods acquisition, he moved to Chicago to work on Food Safety and Preservation research, and through modeling and validation studies:
- Optimized Oscar Mayer’s use of lactate and diacetate and their naturally cultured alternatives as Listeria-control agents in Ready to Eat meats
- Specified process conditions central to Oscar Mayer’s commercial launch of High Pressure Pasteurization of naturally cured RTE meats
David had responsibility for the Kraft cultures R&D group, developed a partnership to explore microwave sterilization leading to several patents, and led a program that developed an internal proprietary natural antimicrobial commercialized in several Kraft products. Technologies from his group supported approximately $4 billion in annual sales.
After years as a microbiology "client", he is now back in the "provider" role as Director of Science at Eurofins Microbiology Laboratories, Inc., by way of the Covance Food Solutions group based in Madison, WI, which he joined in 2016. In this role, he ensures appropriate method validation, explores new testing technologies, and fields multiple complicated food microbiology questions.
Products that his team has evaluated or developed and launched include:
- The 3M MDS platform in the Madison microbiology laboratory
- Flow cytometry for enumeration of probiotics
- Strain-level confirmation of probiotic identification using the polymerase chain reaction (PCR)
- Next-generation sequencing using the Oxford Nanopore Technologies GridION sequencing platform for microbial identification and microbiome analysis
Below are resources from David:
This analysis compares BACGene Real-Time PCR and BAX® System PCR Methods for the Detection of Salmonella in Pet Food.
Our webinar hosted by Dr. Neal Craft, Chief Scientific Officer of Eurofins, explores the world of natural pigments, testing methods, and unique matrix challenges.
This poster describes the method development of the AOAC First Action 2018.16 Method: Sugar Profile by High-Performance Anion Exchange Chromatography.
Here we are in the third post of a series focusing on pet food, pet treat, and pet supplement testing considerations. We have explored guaranteed analysis and other testing considerations such as shelf life and microbes. This time around I’ll expand on a topic that people often view as less a food safety issue and more of a palatability issue: Rancidity.
This series is focused on getting new pet food, pet treat, and pet supplement businesses headed down the right path.
Whether you’re considering selling your homemade pet treats or starting a new pet treat business, one of the first steps you may find yourself tasked with is determining what a guaranteed analysis is. Figuring out how to have a product tested and what information is pertinent can be intimidating – the information in this post is intended to get you started in the right direction.
Eurofins SFA or Eurofins SF Analytical offers a wide range of food testing services. This case study highlights their Special Projects and Investigative capabilities as they take you on a guided case study, where they investigate a mysterious white residue on dog treats. Follow them every step of the way to learn how they solved this mystery!
Not all rancidity tests are equally appropriate. Here are some helpful hints regarding how each test is performed, what it reveals, limitations and which may be more important for a given scenario.
In this digital conference Eurofins experts, industry partners and food safety thought leaders guide attendees through a discussion of the latest solutions and controls for persistent pet food manufacturing issues.
What is L-Carnitine and what is its function in your pet food nutritional blend? Eurofins experts explain it all in this infographic!
