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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

Workplace bullying can cause a toxic teaching environment
2014-04-15

A study done by the University of the Free State’s Faculty of Education exposed how teachers in South Africa fall victim to bullying in the workplace on a daily basis.

This study by Prof Corene de Wet from our School of Open Learning and Dr Lynette Jacobs from our School of Education Studies, exposed the commonness of workplace bullying (WPB) among teachers.

More than 2 700 teachers, from all school levels in urban, township, informal settlements, rural and farm schools, took part in a 43-question survey. Teachers from eight provinces were included in the study.

About 90% of the respondents were victims of WPB by school colleagues and/or management during the 12 months that preceded the study.

These acts included direct shunning, having untrue things said about them, verbal abuse, threats and ridicule, insults and teasing, damaging of possessions as well as physical violence.

Dr Jacobs says WPB is an extremely serious problem in some South African schools, compared to the occurrence in other countries.

“South African teachers are working in ‘toxic’ environments characterised by disgruntled, overworked and stressed teachers. There often are high levels of learner-on-learner and learner-on-educator violence and bullying, communities fraught with moral degradation, racial conflict, violence, lawlessness and economic despair. In schools where despair and disrespect prevail, teachers often turn on one another,” she says.

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