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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

UFS academics serve high in ranks of Cereal Science institutions
2017-10-10

Description: Cereal Science Tags: Cereal Science

Dr Angie van Biljon, Senior Lecturer in the Department of Plant Sciences at the University of the Free State (UFS), was elected as president of Cereal Science and Technology South Africa (CST-SA) at their bi-annual general meeting, in Pretoria.

Prof Maryke Labuschagne, Professor in Plant Breeding at the UFS and official representative of South Africa in the American Association for Cereal Chemists International from 2007, was re-elected as the South African representative to the American Association for Cereal Chemists. She attends the annual conference in the US as well as the International Association for Cereal Science and Technology (the European counterpart of AACC) regularly. “I use these conferences to report on the research done by the research team at the UFS on gluten protein, baking quality and nutritional value of cereals,” she said.

Prof. Labuschagne was also involved in a training course for the baking industry. 

Both Dr Van Biljon and Prof Labuschagne are involved in research on wheat gluten proteins, which is critical to the baking industry. CST-SA is a platform to disseminate this and other research, not only locally but also internationally. The aim of this society is to advance cereal science and technology both in the public sector and in the industry of Southern Africa.

CST-SA creates an opportunity for staff and
students working on cereals to interact
with the industry. This prevents research
from being just academic and creates
an opportunity to bring the research and the
industry together.

Wheat research not just academic
According to Prof Labuschagne CST-SA creates an opportunity for staff and students working on cereals to interact with the industry. This prevents research from being just academic and creates an opportunity to bring the research and the industry together. This has been very useful for students at the university working on cereals, as they have made presentations at the “New Voices” symposium, a forum for postgraduate students to present their research.

“Through CST-SA we have also, through the years, presented our research on an international level at the annual meetings of the American Association for Cereal Chemists and the International Association for Cereal Science and Technology,,” said Prof Labuschagne.

The science of cereals
CST-SA is an association of organisations and individuals, from both the private and public sectors, who are actively involved in the science and technology of cereals. Its aim is to promote the dissemination of knowledge and information on cereal science and technology through meetings, publications, workshops and other means. CST-SA also organises training courses for the industry. In the past years there was a course for the baking industry and one for the milling industry and also the “New Voices” symposium”.

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