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Research Fields

Postharvest Biosystems and Agroprocessing

  • Focuses on understanding the physiological and underpinning molecular responses of fruit and vegetables from farmgate to the consumer table.

  • Explores sustainable food preservation strategies, including refrigeration, packaging systems, irradiation, and other non-thermal technologies to minimise postharvest losses.

  • Applies conventional and advanced tools to transform agricultural produce into convenient, value- added products and enable the development of new products.

 

Postharvest Biosystems and Agroprocessing
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Prof Gunnar Sigge
Associate Professor and Departmental Chair
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Dr Oluwafemi Caleb
Senior Lecturer and Researcher

Cereal Science and Brewing Technology

  • Explores the complex biochemical reactions in cereals using physicochemical, rheological, and advanced analytical techniques.

  • Investigates ancient grains and alternative raw materials for brewing and distilling.

  • Applies near-infrared (NIR) spectroscopy and hyperspectral imaging to characterise wheat, barley, and other commodities such as hops.

  • Advances on non-destructive analytical approaches for cereal quality assurance and innovation in food and beverage applications. 

 

Cereal Science & Brewing Technology
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Prof Marena Manley
Senior Professor and Researcher
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Dr Stefan Hayward
Lecturer and Researcher

Near-infrared (NIR) Spectroscopy and Hyperspectral Imaging

  • Applies near-infrared spectroscopy and hyperspectral imaging for non-destructive assessment of food quality, product authentication,and food fraud detection.

  • Uses multivariate data analysis and chemometrics methods to interpret complex spectral data.

  • Visualises the chemical composition of food matrices using spatially resolved hyperspectral image analysis.

  • Utilises both benchtop and portable instruments for real-time quality monitoring in laboratory and field settings.

  • Advances spectroscopic approaches to transform food quality control and product authentication.

 

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Prof Marena Manley
Senior Professor and Researcher
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Dr Paul Williams
Senior Lecturer and Researcher

Sensory Science and Sensometrics

  • Focuses on understanding consumer perception and product experience using advanced sensory evaluation and statistical modelling.

  • Conducts descriptive and affective tests, consumer behaviour studies, and sensometric analyses.

  • Supports product development, quality optimisation, and innovation in the food and beverage sectors.

  • Provides facilities for academic and industry collaboration, including contract testing and customised sensory solutions.

 

Food Science 5
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Dr Jeannine Marais
Senior Lecturer and Researcher

Sensory for the Food Industry

  • Applies descriptive analysis, sensometrics, and advanced statistical tools to link sensory attributes with ingredients, processing conditions, and physicochemical properties of foods and beverages.

  • Explores diverse food matrices, with particular expertise in profiling indigenous South African products and developing sensory communication tools such as aroma and flavour wheels.

  • Supports industry through product benchmarking, consistencymonitoring, product profiling, consumer studies, and the identification of drivers of liking.

  • Offers training workshops, conducts independent sensory research, and builds national and international collaborations to advance sensory science.

 

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Dr Erika Moelich
Researcher
Sensory Science and Sensometrics

New Product Development and Functional Foods

  • Explores the role of nutrition as a tool to help address and prevent emerging health challenges in the general population.

  • Advances innovation in the new product development process, including the application of novel sensory methods, data analytics, and artificial intelligence.

  • Investigates the potential of functional foods to contribute to preventative health and improved wellbeing.

 

New Product Development & Functional Foods
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Dr Debora van der Merwe
Lecturer and researcher

Food and Water Quality and Safety 

  • Conducts multidisciplinary, One Health–focused research addressing food and water quality and safety across the agricultural-food system, linking pathogens to public health outcomes, and incorporating food safety communication and stakeholder engagement.

  • Identifies, tracks, and investigate the survival of microbial populations in food and water using phenotypic and molecular approaches such as whole-genome sequencing and metagenomics.

  • Investigates antimicrobial resistance, sanitiser tolerance, and evaluation of disinfection technologies including UV.

  • Examines microbial safety in diverse food commodities, includingready-to eat foods, fresh produce, dairy, meat, protein powders, and fermented foods.

  • Studies microbial populations such as Listeria monocytogenes, Salmonella, Clostridioides difficile and Enterobacteriaceae.

 

Water Quality
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Dr Diane Rip
Lecturer and Researcher
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Prof Pieter Gouws
Senior Professor and Researcher
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Prof Gunnar Sigge
Associate Professor and Departmental Chair

Centre for Food Safety (CFS)

  • Conducts multidisciplinary research addressing food safety across the agri-food system, from farm to fork, in collaboration with industry, veterinarians, academia, government, and healthcare sectors.

  • Advances internationally relevant food safety research, training, and capacity building through strong national and global collaborations.

  • Provides fully equipped BSL-2 food microbiology laboratories that enable high-quality research and rapid response to emerging risks.

  • Applies a One Health approach that emphasises the interconnectedness of human, animal and environmental health to strengthen food safety and address global challenges.

  • Uses whole genome sequencing technologies to strengthen foodborne disease surveillance and response and support precision food safety.

 

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Prof Pieter Gouws
Senior Professor and Researcher
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Dr Diane Rip
Lecturer and Researcher

Food Biochemistry 

  • Investigate the complex biochemical interactions between food ingredients that influence product quality and stability.

  • Develop novel, rapid and sensitive analytical methods to evaluate ingredient stability in response to processing conditions.

  • Apply advanced analytical techniques to overcome matrix-related limitations of conventional analytical approaches.

  • Support new product development and advance innovation in the food industry through improved biochemical insight.

 

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Dr Stefan Hayward
Lecturer and Researcher