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05 December 2019 | Story Valentino Ndaba | Photo Stephen Collett
Justice read more
Social justice is the promotion of just societies and treatment of individuals and communities based on the belief that we each possess an innate human dignity.

The power of research lies in the possibility to move from theory to practical outcomes that can change society for the better in some way. In essence, scholars have the ability to create the future in collaboration with government and civil society. At a recent international colloquium hosted by the University of the Free State (UFS) South African Research Chairs Initiative (SARChI) programme, researchers deliberated on social justice issues and possible resolutions.

Delegates from institutions across the UK, Zimbabwe, and Sweden presented findings from studies conducted around the world under the theme ‘Making Epistemic Justice: An international colloquium on narrative capabilities and participatory research’. The UFS SARChI Chair in Higher Education and Human Development Research Programme, under the leadership of Professor Melanie Walker hosted the colloquium from 21-22 November in Bloemfontein.

The importance of psychological liberation

In her welcoming address, Prof Walker quoted the late Black Consciousness activist, Steve Biko, who anticipated many of the current debates on epistemic power and exclusions when he wrote that “the most potent weapon in the hands of the oppressor is the mind of the oppressed”.

Prof Walker reiterated that epistemic justice matters, as affirmed by Kenyan writer, Ngũgĩ wa Thiong’o who in 1981 stated that, “colonialism imposed its control over social production of wealth through military conquest and subsequent political dictatorships. But its most important area of domination was the mental universe of the colonised, the control through culture, how people perceive themselves, and their relationship to the world”.

The relationship between storytelling and social justice

Dr Holly Henderson from the University of Nottingham in the UK was the first speaker to make a presentation, titled ‘Resisting the narrative conclusion in educational research’. According to Henderson, storytelling is an essential part of the long road to social justice.  

Henderson’s keen interest in the complexity of the narrative developed when she started working in further education many years ago. A significant part of her research focuses on the concept of ‘possible self’ which requires the art of storytelling in order to come to life. A study she conducted on university students delved deeper into this concept and found that environment plays a major role in the way individuals perceive the future. 

“The more detailed you imagine something, the more likely you are to achieve it,” said Henderson. However, the correct structures enable the future to be imagined. Hence, curriculum decolonisation, equal access to quality education, and social justice become all the more important in achieving future success among students globally.
 
The art of activism and advocacy 

The joint work of Dr Faith Mkwananzi from the UFS and Dr Tendayi Marovah from the Midlands State University in Zimbabwe looked at street art, otherwise known as graffiti, as a way to foster epistemic justice and collective capabilities among marginalised youth. 

According to Marovah, storytelling using art gives a voice to the voiceless and assigns dignity to the excluded. “Narrative offers an opportunity in which the unheard and unseen are heard and seen.”

Delegates of the colloquium unanimously agreed that researchers are in the business of providing much-needed direction on how to stop discrimination, challenging unjust government policies and the abuse of power, promoting peace instead of violence, eradicating poverty, opening access to quality education among other social justice issues. Therefore unity in research diversity provides fertile ground for manifesting social justice.


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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