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07 August 2019 | Story Charlene Stanley | Photo Stephen Collett
Prof Francis Petersen, Prof Puleng LenkaBula, William Bulwane and Min Thoko Didiza
Prof Francis Petersen, UFS Rector and Vice-Chancellor; Prof Puleng LenkaBula, Vice-Rector: Institutional Change, Student Affairs, and Community Engagement; Mr Kwekwe William Bulwane, Free State MEC for Agriculture and Rural Development; and Ms Thoko Didiza, Minister of Agriculture, Land Reform and Rural Development, who presented the 2019 Charlotte Maxeke public lecture.

“This work is not for yourselves. Kill that spirit of self. Do not live above your people. Live with them.” 
These famous words by Charlotte Maxeke, one of South Africa’s leading academic and social pioneers, formed the thrust of Minister Thoko Didiza's public lecture in a packed Equitas Auditorium on the UFS Bloemfontein Campus, three days before South Africans celebrate Woman’s Day.

The Agriculture, Land Reform and Rural Development Minister urged her audience to heed the “rich lessons this remarkable woman holds for our generation today”, in a lecture with the topic: Feminist Leadership, Intergenerational Dialogue on Knowledge, Agriculture and Sustainable Futures.

Educational pioneer

Referring to Maxeke’s many academic and cultural achievements, Minister Didiza pointed out that, “Her educational achievements did not make her see her fellow Africans any differently. It made her want to change their lives for the better.”
She called Maxeke a “true feminist, with an inclusive vision to fight for the betterment of all South Africans”.

This was echoed by Prof Francis Petersen, UFS Rector and Vice-Chancellor, in his welcoming address. He singled out the fact that Maxeke used to spend long hours tutoring her less skilled classmates while still at school.
“This wonderful example of using your own knowledge to make a real impact in the lives of others, is something we at the University of the Free State truly salute,” he said.  

Women’s conversation on land

On the topic of land reform, Minister Didiza referred to the fact that countries all over the world were involved in a ‘continuous process’ of land reform. She appealed to all South Africans to get involved in dialogues around the land issue.
“I know the pain and the cries of African people when it relates to land. But I don’t hear the cries and concerns of our white compatriots. Because until we understand each other’s pain, we will never be able to navigate the future.”
Minister Didiza then called for a ‘women’s conversation on land’, as she believed women to be ‘calmer’ than men and more inclined to collaborate with and listen to one another on an issue that is vital to all South African communities. 

Knowledge should lead to action

Minister Didiza said she believed universities had an important role to play in “gaining collective knowledge to solve problems”, and that agriculture should be a key focus area here – “benefitting from innovations in other sectors”.
“We need to urgently revitalise agriculture to once again bring glory to the Free State,” she said.
 “Knowledge means nothing if not translated into action and solutions for the problems we face in South Africa,” she concluded.

The Charlotte Maxeke lecture has been presented annually since 2009. Previous speakers include Minister Angie Motshekga, Prof Hlengiwe Mkhize and Dr Frene Ginwala.
 
Who was Charlotte Maxeke?

The CMM Institute describes her in this way:
“Charlotte Mannya-Maxeke (1871–1919) was a pioneering South African woman who was passionate about inclusivity, education and evangelism. She grasped every opportunity presented to her and accomplished many notable firsts during her lifetime.”
These ‘firsts’ include:
- being the first black woman in South Africa to obtain a BSc degree (at Wilberforce University in the United States of America in 1901);
- being the first woman to participate in the King’s Courts under King Sabata Dalindyebo of the AbaThembu;
- being the first African woman to establish a school (in Evaton, with her husband, in 1908);
- being the only woman who attended and contributed to the first African National Congress (ANC) conference in 1912; and
- being the co-initiator, organiser, and first President of the Bantu Women’s League, founded in 1918.

News Archive

Nanotechnology breakthrough at UFS
2010-08-19

 Ph.D students, Chantel Swart and Ntsoaki Leeuw


Scientists at the University of the Free State (UFS) made an important breakthrough in the use of nanotechnology in medical and biological research. The UFS team’s research has been accepted for publication by the internationally accredited Canadian Journal of Microbiology.

The UFS study dissected yeast cells exposed to over-used cooking oil by peeling microscopically thin layers off the yeast cells through the use of nanotechnology.

The yeast cells were enlarged thousands of times to study what was going on inside the cells, whilst at the same time establishing the chemical elements the cells are composed of. This was done by making microscopically small surgical incisions into the cell walls.

This groundbreaking research opens up a host of new uses for nanotechnology, as it was the first study ever in which biological cells were surgically manipulated and at the same time elemental analysis performed through nanotechnology. According to Prof. Lodewyk Kock, head of the Division Lipid Biotechnology at the UFS, the study has far reaching implications for biological and medical research.

The research was the result of collaboration between the Department of Microbial, Biochemical and Food Biotechnology, the Department of Physics (under the leadership of Prof. Hendrik Swart) and the Centre for Microscopy (under the leadership of Prof.Pieter van Wyk).

Two Ph.D. students, Chantel Swart and Ntsoaki Leeuw, overseen by professors Kock and Van Wyk, managed to successfully prepare yeast that was exposed to over-used cooking oil (used for deep frying of food) for this first ever method of nanotechnological research.

According to Prof. Kock, a single yeast cell is approximately 5 micrometres long. “A micrometre is one millionth of a metre – in laymen’s terms, even less than the diameter of a single hair – and completely invisible to the human eye.”

Through the use of nanotechnology, the chemical composition of the surface of the yeast cells could be established by making a surgical incision into the surface. The cells could be peeled off in layers of approximately three (3) nanometres at a time to establish the effect of the oil on the yeast cell’s composition. A nanometre is one thousandth of a micrometre.

Each cell was enlarged by between 40 000 and 50 000 times. This was done by using the Department of Physics’ PHI700 Scanning Auger Nanoprobe linked to a Scanning Electron Microscope and Argon-etching. Under the guidance of Prof. Swart, Mss. Swart en Leeuw could dissect the surfaces of yeast cells exposed to over-used cooking oil. 

The study noted wart like outgrowths - some only a few nanometres in diameter – on the cell surfaces. Research concluded that these outgrowths were caused by the oil. The exposure to the oil also drastically hampered the growth of the yeast cells. (See figure 1)  

Researchers worldwide have warned about the over-usage of cooking oil for deep frying of food, as it can be linked to the cause of diseases like cancer. The over-usage of cooking oil in the preparation of food is therefore strictly regulated by laws worldwide.

The UFS-research doesn’t only show that over-used cooking oil is harmful to micro-organisms like yeast, but also suggests how nanotechnology can be used in biological and medical research on, amongst others, cancer cells.

 

Figure 1. Yeast cells exposed to over-used cooking oil. Wart like protuberances/ outgrowths (WP) is clearly visible on the surfaces of the elongated yeast cells. With the use of nanotechnology, it is possible to peel off the warts – some with a diameter of only a few nanometres – in layers only a few nanometres thick. At the same time, the 3D-structure of the warts as well as its chemical composition can be established.  

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za  
18 August 2010
 

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