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28 April 2023 | Story Leonie Bolleurs | Photo Supplied
Schae-Lee Olckers’
UFS PhD student and food scientist Schae-Lee Olckers’ research could contribute to a stable supply of good quality wheat and bread, even in the face of climate change.

Follow your passion in order to find your purpose. This is the mantra of food scientist and University of the Free State (UFS) PhD student Schae-Lee Olckers, whose research is set to improve wheat quality by identifying which types of wheat are better able to tolerate stress, and which proteins are most important for producing high-quality bread. 
 
“By grasping this, it is possible to ensure that we continue to have a stable supply of good quality wheat and bread, even in the face of climate change,” says Olckers, who believes wheat is one of the most important food grains in the human diet, and one of the most important staple cereal crops in the world.

Her PhD study, ‘The influence of abiotic stress on gluten protein and baking quality in bread wheat’, under the supervision of Dr Angie van Biljon and Prof Maryke Labuschagne in the Department of Plant Sciences, and Prof Garry Osthoff in the Department of Microbiology and Biochemistry, is investigating how different levels of heat and drought stress – mostly due to climate change – affect the gluten protein composition of high-yield bread wheat.

Olckers is a food scientist at StartWell Foods (Pty) Ltd, a non-profit organisation that produces high-quality extrusion products for feeding schemes around the country. The products help to eliminate stunted growth among children.

Improving wheat breeding programmes
This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world. – Schae-Lee Olckers

Her research focuses on examining different types of wheat and investigating how proteins are affected by stressors like heat and drought, to understand how these stressors impact the quality of bread. She uses new proteomic methods to look at the different proteins in the wheat flour, to gain a better appreciation of how gluten proteins react to stress.

In this study Olckers is able to see how the proteins change in the various wheat cultivars, helping us to understand how the different types of wheat perform in baking, and how the proteins affect the final product.

She collaborates with the International Maize and Wheat Improvement Center (CIMMYT) in Mexico, that releases new wheat cultivars for developing countries. Their aim is to develop wheat cultivars that maintain their quality in different environments.  To investigate the performance and characteristics of the seeds, both in the field and in the laboratory, CIMMYT did the field trials, quality assessment, and supplied the seeds for high-performance liquid chromatography (HPLC) and proteomics analysis. 

Finding ways to adapt to climate change

She believes that understanding how these stressors impact the production of bread-baking quality in wheat will help scientists gain important insights into how climate change affects our food supply. 

“Taking into consideration the current and projected intensifying heat and water deficit stresses, it is crucial to improve the understanding of these phenomena in order to implement new breeding strategies for sustainable wheat quality. This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world,” Olckers says. 

News Archive

Science is diversifying the uses of traditional medicines
2017-07-17

Description: Dr Motlalepula Matsabisa  Tags: traditional medicines, Indigenous Knowledge Systems, Dr Motlalepula Matsabisa, Malaria, priority disease  

Dr Motlalepula Matsabisa.
Photo: Anja Aucamp

According to the World Health Organisation, a large majority of the African population are making use of traditional medicines for health, socio-cultural, and economic purposes. In Africa, up to 80% of the population uses traditional medicines for primary healthcare.

The Indigenous Knowledge Systems (IKS) was identified as a lead programme under the directorship of Dr Motlalepula Matsabisa. Research undertaken by the IKS Lead Programme focuses on some key priority diseases of the country and region – including malaria, HIV, cancer, and diabetes.
 
Not just a plant or tree

Malaria is a priority disease and is prevalent in rural and poor areas, resulting in many traditional health practitioners claiming to treat and cure the disease. There may well be substance to these claims, since as much as 30% of the most effective current prescription medicines are derived from plants.  For instance, chloroquine, artemisinin for malaria, Metformin for diabetes, Vincristine and Vinblastine for cancer, are plant-derived drugs.  

Dr Matsabisa’s current research is investigating a South African medicinal plant that has been shown to have in vitro antiplasmodial activity, with subsequent isolation and characterisation of novel non-symmetrical sesquiterpene lactone compounds offering antimalarial activity. These novel compounds are now patented in South Africa and worldwide. This research is part of the UFS and South Africa’s strive to contribute to the regional and continental malaria problem. The UFS are thus far the only university that has been granted a permit by the Medicines Control Council to undertake research on cannabis and its potential health benefits.

“All of these projects are aimed
at adding value through the scientific
research of medicinal plants, which
can be used for treating illnesses,
diseases, and ailments.”

Recognition well deservedThrough Dr Matsabisa’s research input and contributions to the development of the pharmacology of traditional medicines, he recently became the first recipient of the International Prof Tuhinadrin Sen Award from the International Society of Ethnopharmacology (ISE) and the Society of Ethnopharmacology in India. ISE recognises outstanding contributions by researchers, scientists, and technologists in the area of medicinal plant research and ethnopharmacology internationally.

More recently, Dr Matsabisa undertook research projects funded by the National Research Foundation, as well as the Department of Science and Technology, on cancer, gangrene, and diabetes. He is also involved in a community project to develop indigenous teas with the community. He says, “All of these projects are aimed at adding value through the scientific research of medicinal plants, which can be used for treating illnesses, diseases, and ailments”.

Dr Matsabisa has worked with many local and international scientists on a number of research endeavours. He is grateful to his colleagues from the Department of Pharmacology in the Faculty of Health Sciences, who are dedicated to science research and the research of traditional medicines. The IKS unit also received immense support from the Directorate of Research Development.

 

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