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Tracey Squires
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- Biography:
Tracey has worked for the University since 2004 and has been an integral part of the Natural Resources Institute teaching team since March 2016. As NRI’s Programme Administration Manager, Tracey provides comprehensive support for the implementation of NRI's taught degree programmes. She plays a pivotal role in planning and facilitating student recruitment and programme promotion, serving as the primary point of contact for our students and teaching academics.
Key expertise:
- Programme Administration: Management of academic programme logistics and operations
- Student Support: Providing guidance and support to students & addressing queries
- Records Management: Ensuring compliance with data protection regulations
- Event Coordination: Organisation of student-related events and activities & collaboration with stakeholders for event planning
- Policy Implementation: Implementation of university policies and procedures & ensuring compliance with academic regulations
- Communication: Liaison with faculty, staff, and external partners on student matters & facilitating effective communication channels for student-related issues
Phone: +44 (0)1634 88 3734
NRI Programme Admin Manager
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Valerie Pondaven
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- Biography:
Valerie worked closely with the Greenwich Research and Enterprise team as part of a regional consortium before joining Greenwich University full-time 10 years ago. Her role was to help start-up and more established businesses to develop and launch innovative products or services in the UK and abroad. As an innovation and growth specialist for Innovate UK Edge, she helped businesses develop and manage their innovation, developed sustainable and profitable business model and in many cases access finance to support their growth. The support package includes; identifying suitable sources of public or private funding; bringing new and existing products and services to market successfully; managing innovation processes; establishing market and understanding market potential; and connecting to the wider innovation ecosystem.
- Research / Scholarly Interests:
Valerie is a member of the Food Systems RG.
Her contribution to the Research Group, NRI and the University of Greenwich will be to raise awareness of the expertise and facilities available, coordinate knowledge transfer between academics and the business community and help provide cost effective solutions to industrial problems to generate long-term sustainable commercial income and encourage collaboration between researchers and the businesses.
Valerie’s role will contribute to build industry-led consortium to apply for public funding.
Food Accelerator Manager
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Xi He
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- Qualifications:
MSc, PhD
- Biography:
Miss Xi He has conducted her PhD study under the supervision of Prof. Henryk Jeleń in the Food Volatilomics and Sensomics Group at Poznan University of Life Sciences, Poland from 2017 to 2023. She was studying the chromatographic techniques to analyse food volatiles for accessing food quality and authenticity. She has defended her doctoral dissertation and awarded as distinction based on top-shelf publications for example: Food Chemistry, Journal of Agricultural and Food Chemistry, and Journal of Chromatography A.
Miss Xi He is very active in the scientific activity, she has given talks at 3 international conferences, presented posters, or contributed as a co-author at 7 conferences, for instance 42nd International Symposium on Capillary Chromatography and the 15th GCxGC Symposium, 25th International Symposium on Separation Sciences, Challenges in Food Flavor and Volatile Analysis.
- Research / Scholarly Interests:
Miss Xi He is interested in the application of GC and GCxGC hyphenated techniques in Food volatile and flavour analysis.
Food volatile compounds contains the food aroma compounds which are contribute to the food flavour and off-flavour, the application of GC-O combined with GCxGC-ToF-MS can identify such aroma active compounds.
The volatile compounds convey the food quality and authenticity information as well, for example, to trace the botanical and geographical origin of the food products by comparing the volatile compounds profiles.
- Research Projects:
Growing Kent & Medway projects
- Help with analytical work for businesses as part of the food accelerator programme.
- Business Innovation Voucher (BIV) project(s) which may require flavour analysis (will start from March/April ’24).
- Flavour analysis project with SepSolve/Markes (comparison of flavour profiles of the extruded versus non-extruded plant proteins).
Project PROFILE
Aim to produce protein rich fractions from Spirulina for food applications with improved taste and environmental impact.
- Flavour profiling and identification of the key (off) flavour markers of Spirulina microalgae and development of potential masking strategies for off-flavour.
- Optimisation of protein product with improved taste by profiling and comparing key flavour compounds in protein extracts and raw biomass.
- Help validation of the scaled-up production and extraction of Spirulina by identifying the optimal stage during the product life-cycle to tackle the reduction of off-flavour compounds.
- Teaching Programmes:
Teach flavour analysis/techniques to other researchers/students as well as perform demo to visitors
- Responsibilities:
- Responsible for overall management of GCxGC-ToF MS and to undertake day-to-day operational responsibilities and upkeeping/maintenance.
- Act as the technical Lead for the research project linked to the flavour analysis, deliver enterprise/corporate project, and involve in (student) training.
- Maintain and implement NRI’s QMS procedures and work instructions as well as responsible for ordering consumables for the GC-MS, overseeing installation where required.
- Awards:
2023 distinction of the PhD dissertation, Poznan University of Life Sciences
- External Profiles:
ORCID
https://orcid.org/my-orcid?orcid=0000-0003-0624-763X
- Selected Publications:
- He, X., Yangming, H., Górska-Horczyczak, E., Wierzbicka, A. and Jeleń, H.H., 2021. Rapid analysis of Baijiu volatile compounds fingerprint for their aroma and regional origin authenticity assessment. Food Chemistry, 337, p.128002. https://doi.org/10.1016/j.foodchem.2020.128002
- He, X., Gbiorczyk, K., Jeleń, H.H. Can volatiles fingerprints be an alternative to isotope ratio mass spectrometry in the botanical origin determination of spirits? Journal of Agricultural and Food Chemistry, 71(5), p.2637-2643. https://doi.org/10.1021/acs.jafc.2c08141
- He, X. and Jeleń, H.H., 2021. Comprehensive two-dimensional gas chromatography–time of flight mass spectrometry (GC× GC-TOFMS) in conventional and reversed column configuration for the investigation of Baijiu aroma types and regional origin. Journal of Chromatography A, 1636, p.461774. https://doi.org/10.1016/j.chroma.2020.46177
Flavour Technologist
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Dr Hayley Thompson
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- Qualifications:
BSc Hons, PhD
- Biography:
Dr Hayley Thompson joined the NRI in 2022 as a Molecular Microbiologist on the RodentGate project. Prior to joining NRI, Hayley has spent much of her career at King’s College London, where she first undertook her PhD in the Microbiology Department, investigating virulence determinants in a putative oral pathogen, graduating in 2011. On completion of her PhD, she remained at King’s, working in Professor William Wade’s group investigating the role of bacteria in human oral diseases and developing novel methods to cultivate not-yet-cultivated oral bacteria, as part of the Human Oral Microbiome Database effort.
After a career break, Hayley re-joined King’s College London as a part-time Postdoctoral Researcher within the Centre for Host-Microbiome Interactions. Here she resumed her work attempting to cultivate not-yet-cultivated species of oral bacteria, with a specific focus on the candidate phyla radiation bacteria and worked with pharmaceutical companies testing novel anti-biofilm compounds on in-vitro biofilms, modelling the oral bacteriome.
In her PhD and post-doc positions, Hayley has gained extensive knowledge and experience in a variety of microbiological, molecular biology, immunological techniques, and high throughput sequencing techniques. The experience Hayley has acquired over her career at King’s will be utilized in the RodentGate project where she will be using a variety of molecular biology techniques and high throughput sequencing to investigate the presence and prevalence of pathogens in rodents and their potential spread to livestock on farms in the UK and across the EU.
Hayley’s research interests include the characterisation of microbiomes in disease and health using high throughput sequencing techniques, investigating microbial dark matter and the identification and characterisation of virulence determinants in pathogenic bacteria.
Molecular Microbiologist
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Dr Sai Srinivasa Sudharshan Kondapalli
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Research Fellow in Food Safety of Foods and Vegetables
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Dr Mary Nkongho Tanyitiku
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- Qualifications:
BSc (Hons), MEng, MSc, PhD
- Biography:
Dr Mary Tanyitiku joined the University of Greenwich in October 2023 as a Research Fellow in food and safety. She is a trained food process engineer with experience in academia and the food industry. For example, in 2014 and 2015, she worked with the Netherlands Development Organisation, SNV Cameroon, to improve the performance of women cooperatives/CIG in the diary value chain, that is, production, collection, processing and commercialisation of milk and milk products. This fixed-term field project focused on diet formulation/animal nutrition and incorporated local dairy producers and processors in the Far North dairy platform termed “Plateforme des Acteurs de la Filière Lait de la région de l’Extrême-Nord” (ACFILEN). Then, between 2015 and 2018, she went further as a lecturer to design curriculums and teach modules in the production and processing of arable, animal, and plantation food products as well as in diet formulation/animal nutrition, starting from the very first batch of student teachers (postgraduate level) at the Higher Technical Teachers Training College of the University of Buea, Cameroon. In addition, she was a senior quality and food grader at Kraft Heinz Watties, Christchurch, New Zealand, for four seasons.
While her MSc research studied the effects of processing methods (germination, toasting, fermentation and soaking) on the technofunctional, nutritional and sensory characteristics of African consumed cereal-based complementary foods, her doctoral research was interdisciplinary and combined qualitative research (in-depth face-to-face interviews, participant observation, visual methods), molecular techniques (DNA extraction, PCR, and gel electrophoresis) and traditional microbial culturing to understand the public health risks of foodborne pathogens among snail meat-consuming populations in sub-Saharan Africa, particularly Cameroon. The latter was fully funded by the New Zealand Aid programme.
Despite her career goals in food science, she enjoys teaching French to children under 11 years of age, as a volunteer.
- Responsibilities:
Her role in NRI includes
- The support of the research of NRI academic staff members,
- Contribute to the development of new research areas,
- Work collaboratively with the Laboratory Manager in the provision of practical classes,
- Provide supervision to students’ conducting laboratory-based research projects and
- Contribute to teaching and assessment
- External Profiles:
ResearchGate
https://www.researchgate.net/profile/Tanyitiku-Nkongho
ORCID
https://orcid.org/0000-0003-3809-4340
- Selected Publications:
Tanyitiku MN, Bessem P., & Petcheu, I. (2024). Gluten-free corn cookies incorporated with stinging nettle leaf flour: Effect on physical properties, storage stability, and health benefits. International Journal of Food Science, Wiley. 2024. https://doi.org/10.1155/2024/8864560.
Tanyitiku MN. (2024). Microbiological contamination of fermented cassava products sold in local markets, Yaounde (Cameroon). African Journal of Agriculture and Food Science, 7, 1-14. doi:10.52589/AJAFS-DPAMM68W.
Tanyitiku MN, Nicholas, G., Sullivan, J., Njombissie Petcheu , IC, & On, S. (2024). Survival of Escherichia coli in Edible Land Snails: Implications for Heliciculture and Public Health. Pathogens, 13, 1-10. doi:10.3390/pathogens13030204.
Tanyitiku MN, Njombissie Petcheu IG (2023) Effect of stinging nettle leaf flour substitution on the quality characteristics of fermented corn complementary foods. Journal of Food Research. 12(4). 11-21. doi: https://doi.org/10.5539/jfr.v12n4p31.
Tanyitiku MN, Teh EA, Laison RM, Njombissie Petcheu IC (2023). Foodborne pathogens in leafy vegetables grown and consumed locally in Yaounde, Cameroon: A public health concern. Journal of Food Research. 12(2). 11-22. doi: https://doi.org/10.5539/jfr.v12n2p11.
Tanyitiku MN, Nicholas G, Njombissie Petcheu IC, Sullivan JJ, On SLW (2022) Snail meat consumption in Buea – Cameroon: exposures to foodborne pathogens through social practices assessed in 2019 and 2021 (2022). Archives of Public Health. 80(256). 1-12. doi: https://doi.org/10.1186/s13690-022-01009-8.
Tanyitiku MN, Nicholas G, Njombissie Petcheu IC, Sullivan JJ, On SLW (2022) Public health risks of foodborne pathogens in edible African land snails in Cameroon. Emerging Infectious Diseases: Centers for Disease Control and Prevention (CDC). 28(8). doi: https://doi.org/10.3201/eid2808.220722.
Tanyitiku MN, Njombissie Petcheu IG (2022) Formulation and nutritional analysis of processed sorghum, soybeans, and mango complementary foods. Journal of Food Research. 11(3). 11-21. doi: https://doi.org/10.5539/jfr.v11n3p11.
Tanyitiku MN (2022). Nutritious food and Health risks: A review on the edible land snails of Africa. Journal of Food Safety and Hygiene. 8(2). 64-77. doi:https://doi.org/10.18502/jfsh.v8i2.10669. Impact factor:
Tanyitiku MN, Nicholas G, Sullivan JJ, Njombissie Petcheu IC, On SLW (2022) Snail meat consumption: the methodological challenges in exploring its public health risks. International Journal of Qualitative Methods. SAGE. 21, 1-12. doi.org/10.1177/16094069221078132.
Book chapters
Luca Serventi, Kaichao Yang, Congyi Liu, Mary Tanyitiku, Minoo Mohajer (2023). Lipids. In Serventi L. (Ed.) Sustainable Food Innovation, Sustainable Development Goals Series. Springer International Publishing AG. p73-90. doi: https://doi.org/10.1007/978-3-031-12358-0_5
Luca Serventi, Georgia Mary Wilson, Qiao Chen, Yukun Li, Mary Tanyitiku, Ziqian Feng (2023). Minerals. In Serventi L. (Ed.) Sustainable Food Innovation, Sustainable Development Goals Series. Springer International Publishing AG. p59-71 doi: https://doi.org/10.1007/978-3-031-12358-0_5
Luca Serventi, Yuxuan Wang, Ziqian Feng, Mary Tanyitiku (2023). Fat soluble vitamins. In Serventi L. (Ed.) Sustainable Food Innovation, Sustainable Development Goals Series. Springer International Publishing AG. p107-117. doi: https://doi.org/10.1007/978-3-031-12358-0_5
Research Fellow
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Mihiri Vanniarachchy
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Postgraduate Research Fellow in Flavour Technology
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Elena Arribas Lopez
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- Qualifications:
BSc (Hons), PGCert, MSc, PhD, ISO 9001:2015 LA, HACCP L3
- Biography:
Dr Elena Arribas Lopez is a Lecturer in Food Science at the Natural Resources Institute (NRI), University of Greenwich, where she leads the Food Product and Process Development module. She teaches mainly on the MSc Food Innovation and MSc Food Safety programmes, also contributes to the BSc in Nutrition, and is actively involved in laboratory practices for MSc Food Innovation. Alongside her teaching, Elena supervises postgraduate students on a range of research projects.
Her research focuses on the role of nutrition in wound healing, with a particular interest in how supplement formulations affect Human Dermal Fibroblasts and immune system cells. The aim of her work is to develop functional supplements that can support recovery and improve health outcomes. In the past, she has also explored cytokine release, drug delivery, and 3D printing as part of her wider research in food science and health applications.
Elena completed her PhD at the University of Greenwich with a project titled A Nutritional Approach to Wound Healing: The Role of Supplementation. In this work, she designed supplement formulations from scratch, applied advanced analysis, and evaluated their biological effects. She also holds an MSc in Food Innovation from Greenwich and a BSc (Hons) in Food Science and Technology from the University of Burgos, Spain.
She is a Fellow of the Higher Education Academy and has completed further professional training, including the CQI and IRCA Certified Lead Auditor Training Course (ISO 9001:2015) and a Level 3 HACCP Award (Distinction).
- Research / Scholarly Interests:
Elena’s interest focuses on the potential of natural compounds to accelerate wound healing, and the underlying mechanisms involved, including cell migration, proliferation, and cytokine release.
She is also interested in the role of nutrition in promoting health, as well as the development and application of alternative proteins. Her work includes product development, alongside considerations of food safety and quality management, combining both scientific innovation and practical application.
She is currently part of the “Alternative Proteins” research group, led by Parag Acharya, where she focuses on the nutritional aspects of alternative protein development.
- Research Projects:
Her PhD, “A Nutritional Approach to Wound Healing: The Role of Supplementation”, was supported by Prof. Tony Kochhar. The project aimed to develop a functional supplement that could be widely used to accelerate healing after injury. The research has so far produced promising results.
- Teaching Programmes:
MSc Food Innovation, MSc Food safety, BSc Nutrition. Food Accelerator Programme
- Greenwich Academic Literature Archive (GALA) link:
https://gala.gre.ac.uk/cgi/facet/simple2?q=elena+arribas+lopez&_action_search=
- Responsibilities:
Module leader for Food Product and Process Development
- Awards:
Local Innovative Technology Award - Explorer Programme and Certificate in entrepreneurship specialization (Santander International Entrepreneurship Center (CISE) - 2018
- External Profiles:
ResearchGate
https://www.researchgate.net/profile/Elena-Arribas-Lopez
ORCID
https://orcid.org/0000-0003-1512-7154
Google Scholar
https://scholar.google.co.uk/citations?view_op=list_works&hl=en&user=koBpI_MAAAAJ&gmla=AH8HC4zrG4mxBVM32UJDVTnAizqaV-oNzFN8AaMqqJJwrHU0MaOWewKzOKj7QqwAJoHQcva59Qi8-xhBIZUw-GIQd2YgBuqBkCOVjKE
LinkedIn
https://www.linkedin.com/in/elena-arribas-lopez/
- Selected Publications:
- Lopez, E.A., Zand, N., Ojo, O. & Kochhar, T. 2025, 'Systematic review and meta-analysis of the effect of zinc on wound healing', BMJ Nutrition, Prevention & Health (online), https://doi.org/10.1136/bmjnph-2024-000952.
- Krause, I., Manigk, R., Lopez, E.A. & Douroumis, D. 2024, 'Personalised oral dosage forms using an ultra-compact tablet press at the point of care', European Journal of Pharmaceutics and Biopharmaceutics, vol. 197, p. 114220 (online), https://doi.org/10.1016/j.ejpb.2024.114220.
- Tabriz, A.G., Viegas, B., Okereke, M., Uddin, M.J., Lopez, E.A., Zand, N., Ranatunga, M., Getti, G. & Douroumis, D. 2022, 'Evaluation of 3D printability and biocompatibility of microfluidic resin for fabrication of solid microneedles', Micromachines, vol. 13, no. 9, p. 1368 (online), https://doi.org/10.3390/mi13091368.
- Arribas-López, E., Zand, N., Ojo, O., Snowden, M.J. & Kochhar, T. 2022, 'A systematic review of the effect of Centella asiatica on wound healing', International Journal of Environmental Research and Public Health, vol. 19, no. 6, p. 3266 (online), https://doi.org/10.3390/ijerph19063266.
- Arribas-López, E., Zand, N., Ojo, O., Snowden, M.J. & Kochhar, T. 2021, 'The effect of amino acids on wound healing: a systematic review and meta-analysis on arginine and glutamine', Nutrients, vol. 13, no. 8, p. 2498 (online), https://doi.org/10.3390/nu13082498.
- Milledge, J.J., Maneein, S., Arribas López, E. & Bartlett, D. 2020, 'Sargassum inundations in Turks and Caicos: methane potential and proximate, ultimate, lipid, amino acid, metal and metalloid analyses', Energies, vol. 13, no. 6, p. 1523 (online), https://doi.org/10.3390/en13061523.
Lecturer in Food Science
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Mark Spires
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- Qualifications:
BA,MPH,PhD
- Biography:
At NRI, Dr Spires’ leads the Centre for Food Systems Research alongside forwarding his research interests through a variety of research projects. In this role, he also develops and leads research and innovation consortia with external partners including non-academic stakeholders.
Prior to joining NRI, Dr Spires was a Senior Research Fellow at the Centre for Food Policy (City St Georges, University of London) where he established and lead new interdisciplinary research projects exploring public policy solutions for healthy diets in the UK and in LMICs.
Dr Spires completed his PhD (2018) in Public Health at the University of the Western Cape, South Africa where he researched low-income community access to safe and nutritious food.
- Research / Scholarly Interests:
Dr Spires’ primary research interests centre on seeking to better understand people’s lived experience of local food environments and how findings from these inquiries can contribute to more effective and inclusive food systems and related policy.
- Research Projects:
- EU Horizon £230,000 (Dec 2022-Nov 2026) AfriFOODlinks, Africa & EU collaboration
- NIHR-PHR £1.2 million (Sep 2020-Feb 2024) Family Food Environment Study, London, UK (co-lead applicant)
- National Lottery Funding £50,000 (Dec 2019-June 2023) Peas Please Peoples Engagement Evaluation
- City, Uni of London (Mar-Jul 2022) Participatory Learning with municipal officials in the Breede Valley, South Africa
- City, Uni of London £10,000 (Aug-Dec 2020) Advancing city-level approaches to improving food policy and health–Cape Town
- UKRI-BBSRC £660,000 (Feb 2020-March 2020) Nourished Child Study, Cape Town, South Africa (co-lead applicant)
- ARUA-The Guild Clusters of Excellence: Food Environment Actions for the Promotion of Health. EU-Africa partnership
- Greenwich Academic Literature Archive (GALA) link:
https://gala.gre.ac.uk/view/creators/Spires=3AMark=3A=3A.html
- Responsibilities:
Centre Lead, Centre for Food Systems Research
- External Profiles:
ORCID
https://orcid.org/0000-0002-1767-2511
LinkedIn
https://www.linkedin.com/in/mark-spires-92aaa723/
ResearchGate
https://www.researchgate.net/profile/Mark-Spires-2
- Selected Publications:
- Hawkes, C; Gallagher Squires, C; Spires, M; Hawkins, N; Neve, K; Brock, J; Isaacs, A; Parrish, S; Coleman, P. (2024)‘The full picture of people’s realities must be considered to deliver better diets for all’, Nature Food.
- Barrett, M; Spires, M; Vogel, C. (2024) ‘The Healthy Start scheme in England "is a lifeline for families but many are missing out": a rapid qualitative analysis’, BMC Medicine,22(1):177. doi: 10.1186/s12916-024-03380-5.
- Turner, C; Salm, L; Spires, M; Laar, A; Holdsworth, M. (2023) ‘Capturing the moment: A snapshot review of contemporary food environment research featuring participatory photography methods', Current Opinion in Environmental Sustainability, 65,https://doi.org/10.1016/j.cosust.2023.101364.
- Spires, M.; Battersby, J., Cohen, N., Daivadanam, M., Demmler, K., Mattioni, D., Pradeilles, R., Thompson, C., Turner, C., Venegas, C., Wertheim-Heck, S., Wills, W., Hawkes, C. (2023) ‘A “People’s Summit”: A case for lived experience of the food system as a critical source of evidence to inform the follow-up to the 2021 UN Food Systems Summit’, Global Food Security, 37,https://doi.org/10.1016/j.gfs.2023.100690.
- Laar, A., ...Spires, M., ... Vandevijvere, S. (2022) ‘Monitoring food environments and systems for sustainable diets in Africa: Lessons from Ghana, Kenya, Senegal, and South Africa’, Routledge Handbook of Sustainable Diets, London, https://doi.org/10.4324/9781003174417.
- Laar, A., ...Spires, M.,...Holdsworth, M. (2022) ‘Perspective: Food Environment Research Priorities for Africa: Lessons from the Africa Food Environment Research Network’, Advances in Nutrition, https://doi.org/10.1093/advances/nmac019.
- Isaacs, A., Spires, M., Halloran, A., Stridsland, T., and Hawkes, C. (2021) ‘Gathering data on food environments and practices through photo elicitation in Copenhagen, Denmark: Implications for adapting the EAT-Lancet reference diet to local circumstances’, Cities & Health, 6:3, 511-527, https://doi.org/10.1080/23748834.2022.2078072.
- Swart, R., Van der Merwe, M., Spires, M., and Drimie, S. (2020) ‘Child-centred food systems: Ensuring healthy diets for children’, South African Child Gauge 2020. Cape Town: Children’s Institute, University of Cape Town.
- Spires, M., Delobelle, P., Sanders, and D., Puoane, T. (2020) ‘Using photography to explore people with diabetes’ perspectives on food environments in urban and rural South Africa’, Health Promotion International, https://doi.org/10.1093/heapro/daaa035.
- Spires, M., Berggreen-Clausen, A., Kasujja, F., Delobelle, P., Puoane, T., Sanders, D., and Daivadanam, M. (2020) ‘Snapshots of the food environment from rural and urban settings in high-, middle-, and low-income countries: Lessons from an implementation perspective’, Nutrients, 12(2), 484, doi: 10.3390/nu12020484
Associate Professor in Food Systems Research
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Tobi Fadiji
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Lecturer in Food Science
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