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14 December 2023 | Story Dr Jared McDonald | Photo Supplied
Scholarship of Teaching and Learning Conference
From the left: Dr Eleanor Bernard, Assistant Director in the Centre for Teaching and Learning on the UFS Qwaqwa Campus; Dr Jared McDonald, Chief of Staff in the Office of the Vice-Chancellor and Principal; and Prof Pearl Sithole, Campus Vice-Principal: Academic and Research on the Qwaqwa Campus.

From 21 to 23 November, more than 160 delegates gathered at the Golden Gate Highlands National Park in the Eastern Free State for the fourth biennial conference on Scholarship of Teaching and Learning (SOTL) in the South, dubbed SOTL 4 the South.

This year’s iteration was proudly hosted by the University of the Free State (UFS) and organised by Dr Jared McDonald, Chief of Staff in the Office of the Vice-Chancellor and Principal; Dr Eleanor Bernard, Assistant Director in the Centre for Teaching and Learning on the UFS Qwaqwa Campus; and Prof Zach Simpson, Editor-in-Chief of the SOTL in the South journal. Established and emerging scholars, as well as postgraduate students working in the field of teaching and learning from across disciplines in Southern Africa, came together to share ideas, debate perspectives, and learn from experiences related to the conference theme: Teaching and Learning for Sustainable Futures.

The programme included presentations on a wide variety of topics, such as the challenges and opportunities of artificial intelligence in higher education, academic literacy, student success, teaching and learning for sustainable development, curriculum design, and digital futures. The programme also included two keynote presentations by leading scholars in education for sustainability, Prof Heila Lotz-Sisitka, Distinguished Professor and SARChI Research Chair in Global Change and Social Learning Systems in the Environmental Learning Research Centre at Rhodes University, and Prof Kasturi Behari-Leak, Associate Professor of Higher Education Studies and Dean of the University of Cape Town’s Centre for Higher Education Development.

The organisers were delighted with the quality of the scholarship that was shared. “This conference has been 18 months in the making, and we are grateful to all the delegates for embracing, and engaging with, the conference’s theme. We are also appreciative to all the reviewers on the Scientific Review Committee who were generous with their time, reflections, and critiques in assisting us to deliver a compelling, impactful programme,” said Dr McDonald. Dr Bernard added that “the conference would not have been possible without the generous support of the University of the Free State’s Executive Management and Centre for Teaching and Learning, as well as the senior management of the Qwaqwa Campus, who have supported the conference from the time it was just an idea”.

Prof Zach Simpson expressed his gratitude to the UFS for its support and assistance. “The last in-person conference of SOTL in the South was in 2019, before the COVID-19 pandemic. It was wonderful to see so many scholars come together in a beautiful location to engage with a compelling and topical conference theme.” Selected papers have been invited to contribute to a special issue of SOTL in the South, edited by the organisers and due for publication in mid-2024.

SOTL is an informal ‘body’ that is not affiliated with any particular parent organisation or institution. Its aim is to advance scholarship in teaching and learning across the Global South – conceived of not just in geographic terms – but as concerned with questions of power, access, inequity, and marginalisation, even where these might be present in the Global ‘North’. Moreover, it aims to give voice to novice SOTL practitioners and to serve as a platform for academics, particularly novice academics, to contribute their scholarly work.

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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