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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

Small things matter
2017-01-17

 Description: Prof Felicity Burt  Tags: Prof Felicity Burt

Prof Felicity Burt (right) and Dr Dominique Goedhals
from the Department of Medical Microbiology and
Virology at the University of the Free State.
Photo: Anja Aucamp



The newly established virology section at the University of the Free State (UFS) boasts world class expertise. Not only are they one of just five laboratories in the country tasked with specialised HIV testing, but current research generates publications and subsidised funding.

The driving force behind this initiative is passionate and dedicated people who invest long hours into vital research. One such person is Prof Felicity Burt, who eloquently guides her students while making impressive progress within her own field of interest: vector-borne and zoonotic diseases. Prof Burt was recently awarded a research chair (2016-2020) to, among other areas, investigate medically significant vector-borne and zoonotic viruses currently circulating.

That means that her research focus is mainly on viruses transmitted by mosquitoes and ticks, and viruses transmitted from animals to humans. “Yes,” she laughs, “I catch mosquitoes and check them for viruses.”

Becoming familiar with different viruses
As if big screen moments like Outbreak and Contagion did not create enough virus paranoia, the world was recently bombarded by real world Ebola and Zika outbreaks. But awareness, Prof Burt says, is not a bad thing. “Years ago, when people heard that I did Ebola research, they got that distant look in their eyes, and changed the subject. One outbreak later, backed by many media reports, and Ebola is almost a household name. The same goes for the recent Zika virus outbreak in South America.”

The more familiar people become with these types of viruses, the better, Prof Burt feels. However, getting the right message across is not always that easy. The Zika virus outbreak, for example, was a very large outbreak and therefore presented large numbers of affected people. Generally, not everyone infected with an arbovirus will necessarily present with symptoms. But because vector-borne viruses can spread to new areas, surveillance and awareness is important. Here in Bloemfontein, Prof Burt and her team are establishing surveillance programmes.

Gaining knowledge and preventative measures
So, next time you get all wound up about a “biological disaster”, rest assured that competent people like Prof Burt and her colleagues continuously scan the environment to gain knowledge and develop preventive measures should any risks be looming. For example, developing next-generation vaccines that are very effective, but without risk – since they are not built on the virus itself, but only on the part of the virus that will induce an immune response.

Currently, Prof Burt is also looking into the relationship between the Sindbis virus and arthritis. It is clear that we can expect many exciting findings from the UFS’s new virology unit.

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