Our Team

Dr. Elizabeth Lewis
Scientific & Regulatory Adviser (Chemistry)

Dr. Lewis joined NutraSteward as Director in 2016. She has an established track record of providing consultancy services to clients wishing to navigate the regulatory approval processes for novel food and animal feed ingredients. Over the past 10 years, she has collaborated closely with numerous international clients to develop robust regulatory strategies to market.

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She has extensive experience of the preparation, submission and stewardship of successful scientific applications for novel food and feed ingredients in Europe, the U.S. and Canada. In this role, she has advised clients on the design and placement of studies to support the safety and efficacy of a wide range of ingredients including additives, functional food ingredients and new sources of vitamins and minerals. Additionally, she has developed a strong network of contacts within European, U.S. and Canadian regulatory bodies and academic institutions.

Dr. Lewis has a BSc, MSc and PhD (University of York, UK) in Chemistry. After her studies she worked as a post-doctoral researcher at the University of Minnesota (U.S.), and University of Hull. She was a Senior R&D Scientist for Croda Chemicals Europe before becoming a Consultant at Intertek Scientific & Regulatory Consultancy and for DuPont Industrial Biosciences. Alongside her role as Director for NutraSteward, Dr. Lewis is the Secretary General of BAFSAM, the British and Irish Association of Feed Supplement and Additive Manufacturers, a Business Coach for Horizons 2020 and is an Associate Lecturer in Biological Chemistry with the Open University.

Dr. Helena Bento
Scientific & Regulatory Adviser (Animal Nutrition)

Helena joined NutraSteward in 2019 as an accomplished animal scientist and regulatory affairs manager.  Over the past 16 years, she has gained extensive experience of the preparation of target animal safety and efficacy reports for applications of new feed ingredients and additives, primarily in Europe.

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In this role, she has advised clients on the design, statistics and placement of animal studies to support the target animal safety and efficacy of new ingredients and additives.

Helena has an Engineering degree in Agronomy (University of Lisbon, Portugal), MSc and PhD in Animal Nutrition (University of Aberdeen, UK).  After her studies she worked as a postdoctoral researcher at the Scottish Agricultural College (UK).  She was an R&D Scientist for Danisco Animal Nutrition (UK) before becoming a Regulatory Affairs Manager for Lallemand (UK) and for DuPont Industrial Biosciences (UK), where she contributed to the preparation and submission of regulatory applications primarily in Europe.  Additionally, she has developed a strong network of contacts within European regulatory bodies and academic institutions.

Tom Jonaitis, DABT
Toxicology Adviser

Tom Jonaitis is a board-certified toxicologist and independent adviser that works with clients in the food ingredient, dietary supplement, consumer product, and related industries, providing comprehensive toxicology and regulatory consulting guidance and support. He has extensive experience in regulatory evaluations.

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This includes scientific literature hazard reviews and risk assessments, as well as creating pre-market dossiers for novel food and dietary supplement ingredients submissions to various government agencies, including Health Canada, Australia’s TGA and FSANZ, and US FDA. Tom also has over 15 years of experience helping companies address California Proposition 65 compliance and avoiding enforcement activities. 

Dr. Dawn Harmon
Scientific Adviser (Microbiology)

Dr. Dawn Harmon joined NutraSteward in 2016 applying her strong academic background in genetics and biochemistry to the preparation of complex scientific regulatory dossiers for human food and animal feed ingredients in Europe, the U.S. and Canada.  Her particular expertise is the safety and utility assessment of microorganisms, including products derived from genetically modified microorganisms.

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Dr. Harmon has a BSc in Chemistry and a PhD in Biochemistry (Kings College London).  Following her studies, she joined the Genetics Department of the Trinity College Dublin as a postdoctoral research assistant, and was an Assistant Lecturer in the Pathology Department of University College Dublin.  She currently combines her role at NutraSteward with a position as Assistant Staff Tutor in Biology and Health at the Open University (UK).

Dr. Seth Remington
Scientific Adviser (Toxicology)

Dr. Seth Remington joined NutraSteward in 2020 applying his knowledge of toxicology and industrial processes to the preparation of scientific regulatory dossiers for food and animal feed ingredients in Europe, the U.S. and Canada.  Seth has a BSc in Medical Biochemistry, a MSc in Toxicology (Birmingham University), and a PhD in Genetic Toxicology (Newcastle University).

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During his PhD he evaluated the potential of pesticides and other organophosphates to induce DNA damage and cytotoxicity.  He also investigated whether any DNA repair pathways or apoptosis were initiated in response to the genetic damage.  Seth has spent time working in the petroleum industry working to ensure that quality standards and environmental safety was upheld.

Marialejandra Coronado James
Administrative & Technical Assistant

Marialejandra joined NutraSteward as Administrative & Technical Assistant in 2020. She is a petroleum engineer, graduated from the Eastern University (Universidad de Oriente) in Venezuela. After her studies she worked in the oil industry for Halliburton as a Mud Engineer, preparing, analysing and maintenance of drilling fluid.

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In NutraSteward, Marialejandra assists with the day to day management of projects.  In this role, she critically evaluates chemistry and manufacturing information, and undertakes literature searches to assist with dossier preparation.  She also helps with the day to day management of projects.  Additionally, she oversees the library resources and quality control procedures within the company.

Francesca Llewellin
Associate Scientific Adviser

Francesca joined NutraSteward in 2021 after completing her Biochemistry degree at the University of Reading. She has previously worked with NutraSteward as a student, completing research projects on new feed and food ingredients. In her current role, Francesca helps prepare technical dossiers by conducting literature searches, summarizing studies and collecting regulatory information.