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17 April 2025 | Story Onthatile Tikoe | Photo Kaleidoscope Studios
Thabiso Khoeli
Dr Thabiso Khoeli, Lecturer in Historical and Constructive Theology at the UFS, celebrates the completion of his PhD.

The University of the Free State (UFS) celebrated one of its own, Dr Thabiso Khoeli, a Historical and Constructive Theology Lecturer in its Faculty of Theology and Religion, when he received his PhD in Theology with specialisation in religion studies during the recently completed April graduation ceremonies. 

Dr Khoeli’s achievement not only marks a personal milestone but also advances the university’s Vision 130, a strategic initiative to position UFS as a research-led institution by its 130th anniversary in 2034. Dr Khoeli’s academic journey is one of resilience, transformation, and a profound commitment to telling African stories from an African perspective. 

 

From uncertainty to purpose

Dr Khoeli’s path into studying Theology was unplanned. As a former KovsieFootball  player, his initial academic interest was in Sports Science. However, after some admission hurdles, he found himself directed towards Theology, a field that soon captured his full attention.

“Honestly, I did not choose Theology, instead it chose me,” he shares. “… Theology whispered to me and said, ‘Do not deviate, Brother. Your calling is here.” Despite initial scepticism, his first semester revealed the intellectual and spiritual depth of the discipline, compelling him to pursue it with passion.

 

A research focus on African voices

His doctoral research, titled ‘Exploring the Zion Christian Church’s Teachings and Qualities in Comparison with Zion Churches’, examines the theological, historical, and cultural distinctiveness of the Zion Christian Church (ZCC), one of the largest and most influential religious movements in Africa. Motivated by a desire to decolonise theology and challenge externally imposed narratives, Dr Khoeli engaged directly with primary sources, including archival materials and interviews with Church elders.

“Africans must now write their own stories and never rely on the findings presented by others,” he says. His work not only fills critical gaps in theological scholarship but also reflects the UFS’s vision of becoming a centre of thought leadership on the African continent.

 

Research shaping teaching

As a Lecturer in Historical and Constructive Theology, Dr Khoeli’s research directly informs his methods of teaching. He approaches the classroom with a decolonised, historically grounded perspective that helps his students engage with both their spiritual heritage and contemporary realities critically.

“My research enabled me to analyse documents and align them to my objective,” he explains. “That is the strategy I use to collect the relevant reading materials to prepare for the students.” His teaching method fosters independent thinking and encourages students to become scholars who are both academically rigorous and socially conscious.

 

Overcoming challenges through community and conviction

Gaining access to the ZCC’s historical documents was a major challenge. The Church’s deep-rooted secrecy required careful relationship-building and persistent effort. But Dr Khoeli remained undeterred. “I intended to leave no stone unturned,” he says. Through perseverance, mentorship, and faith, he accessed essential material for his literature-based study.

He also credits colleagues at the Faculty of Theology and Religion for their belief in his potential at a time when few others would give him a chance. “It feels great,” he reflects. “I don’t have enough words to explain how overwhelming it feels to prove to yourself that you are the greatest.”

 

A vision beyond the doctorate

With his PhD now complete, Dr Khoeli is setting his sights on further research projects that contribute to the reconstruction of African religious history and knowledge systems. He sees his work as part of a larger mission to revive indigenous spirituality and cultural identity in the face of modern erasure.

“Modernity is converting us to be a nation without roots,” he cautions. His aim is to produce scholarship that restores heritage while also responding to the physical and spiritual needs of African communities, one of the fundamental goals of the UFS’s Vision 130.

 

Inspiring the next generation

To current and future UFS students, especially those considering postgraduate study, Dr Khoeli offers this message, with his own story as proof: “Believe in your purpose, even when the path seems uncertain… There is greatness in you.” 

Through his academic excellence, teaching innovation, and dedication to African-centred research, Dr Khoeli exemplifies the values of the UFS’s Vision 130. His journey reflects a university that is not only committed to high-impact research but also to empowering scholars who bring change, both in the academic world and beyond.

News Archive

Research eradicates bacteria from avocado facility
2017-01-17

 Description: Listeria monocytogenes Tags: Listeria monocytogenes

Listeria monocytogenes as seen under an electron
microscope. The photo was taken with a transmission
electron microscope at the microscopy unit of the UFS.
Bacteriophages (lollipop-like structures) can be seen
next to the bacterial cells.
Photo: Supplied

“The aim of my project was to identify and characterise the contamination problem in an avocado-processing facility and then to find a solution,” said Dr Amy Strydom, postdoctoral fellow in the Department of Microbial Biochemical and Food Biotechnology at the University of the Free State (UFS).

Her PhD, “Control of Listeria monocytogenes in an Avocado-processing Facility”, aimed to identify and characterise the contamination problem in a facility where avocados were processed into guacamole. Dr Strydom completed her MSc in food science in 2009 at Stellenbosch University and this was the catalyst for her starting her PhD in microbiology in 2012 at the UFS. The research was conducted over a period of four years and she graduated in 2016. The research project was funded by the National Research Foundation.

The opportunity to work closely with the food industry further motivated Dr Strydom to conduct her research. The research has made a significant contribution to a food producer (avocado facility) that will sell products that are not contaminated with any pathogens. The public will then buy food that is safe for human consumption.


What is Listeria monocytogenes?

Listeria monocytogenes is a food-borne pathogenic bacterium. When a food product is contaminated with L. monocytogenes, it will not be altered in ways that are obvious to the consumer, such as taste and smell. When ingested, however, it can cause a wide range of illnesses in people with impaired immune systems. “Risk groups include newborn babies, the elderly, and people suffering from diseases that weaken their immune systems,” Dr Strydom said. The processing adjustments based on her findings resulted in decreased numbers of Listeria in the facility.

The bacteria can also survive and grow at refrigeration temperatures, making them dangerous food pathogens, organisms which can cause illnesses [in humans]. Dr Strydom worked closely with the facility and developed an in-house monitoring system by means of which the facility could test their products and the processing environment. She also evaluated bacteriophages as a biological control agent in the processing facility. Bacteriophages are viruses that can only infect specific strains of bacteria. Despite bacteriophage products specifically intended for the use of controlling L. monocytogenes being commercially available in the food industry, Dr Strydom found that only 26% of the L. monocytogenes population in the facility was destroyed by the ListexP100TM product. “I concluded that the genetic diversity of the bacteria in the facility was too high and that the bacteriophages could not be used as a control measure. However, there is much we do not understand about bacteriophages, and with a few adjustments, we might be able to use them in the food industry.”

Microbiological and molecular characterisation of L. monocytogenes

The bacteria were isolated and purified using basic microbiological culturing. Characterisation was done based on specific genes present in the bacterial genome. “I amplified these genes with polymerase chain reaction (PCR), using various primers targeting these specific genes,” Dr Strydom said. Some amplification results were analysed with a subsequent restriction digestion where the genes were cut in specific areas with enzymes to create fragments. The lengths of these fragments can be used to differentiate between strains. “I also compared the whole genomes of some of the bacterial strains.” The bacteriophages were then isolated from waste water samples at the facility using the isolated bacterial strains. “However, I was not able to isolate a bacteriophage that could infect the bacteria in the facility.

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