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12 October 2022 | Story Anthony Mthembu | Photo iFlair Photography
Science for the Future (S4F) summit
Attending the Science for the Future (S4F) summit in the Centenary Complex on the Bloemfontein Campus were, from the left: Back: Dr Cobus van Breda (S4F Programme Director), Amaria Reynders (S4F Family Math Manager), Dr Glynnis Daries (Sol Plaatje University), Prof Francis Petersen (Rector and Vice-Chancellor of the UFS), Tarin Roberts (Nelson Mandela University), Adolph Tomes (Acting Chief Executive Office, SANRAL). In the front are, from the left: Prof Angela James (University of KwaZulu-Natal), Heidi Harper (General Manager Skills Development, SANRAL), Prof Jogymol Alex (Walter Sisulu University).

Teachers from across the country and representatives of six other universities recently gathered at the University of the Free State (UFS) to celebrate the achievements of the Science-for-the-Future (S4F) Teacher Professional Development programmes as well as the successful collaboration between the UFS and other universities.  

The Science-for-the-Future unit in the Faculty of Education hosted a summit in the Centenary Complex on the Bloemfontein Campus on 30 September 2022. The Rector and Vice-Chancellor of the UFS, Prof Francis Petersen, delivered the keynote address at the summit. Representatives from the South African National Roads Agency (SANRAL) – the official sponsors of the Science for the Future initiative – were also present, along with 300 teachers and representatives from the Department of Basic Education. 

In his welcoming address, Prof Patrick Mafora, Vice-Dean of the Faculty of Education, said the initiative exemplifies the UFS’ institutional goals, such as increasing our contribution to local, regional, and global knowledge.  It also supports development and social justice through engaged scholarship.

Improving the quality of teaching and learning for Math and Science 

Dr Cobus van Breda, Programme Director of S4F and Project Manager of the Universities Collaboration initiative, provided background regarding the programmes and stated that “… we know from research that there are many factors that prevent learners in rural areas from excelling in Mathematics and Science. These include subject content knowledge, lack of teaching resources at school and at home, along with a lack of parental involvement, among others.” He said the project aims to address the challenges related to Mathematics and Science teaching and learning in the country. One of the ways in which this goal can be accomplished, is by empowering teachers and learners with the necessary tools, including resources and knowledge, to create a successful learning space for Mathematics and Science. “Our mission is the advancement of innovative and effective Mathematics and Science teaching and learning,” he indicated.

Representatives from the DBE and other institutions were also given the opportunity to highlight the impact of the initiative in their respective institutions. “Our public schooling system, especially in poor and rural areas, is in crisis – more especially in the Eastern Cape. This is due to a lack of learning support and a lack of sufficient skills. This created a need for innovative, sustainable, and tactical solutions to improve the quality of teaching and learning for Math and Science. The Science for the Future initiative is exactly that,” explained Prof Jogy Alex from the Walter Sisulu University.

Making a difference and changing people’s lives 

During his keynote address, Prof Petersen indicated that he preferred the word ‘co-creation’ instead of ‘collaboration’, and he urged the “sponsors not only to contribute funding, but really contribute towards the intellectual project of this programme”. Surely, they have learnings and some ideas that can strengthen and expand the project, he said. Prof Petersen also alluded to the fact that SANRAL contributes towards a Research Chair in Science and Mathematics Education in the Faculty of Education, as well as the fact that, at the university, “we don’t exist to create knowledge for the sake of knowledge; we exist to create knowledge so that the knowledge can make an impact”. He referred to the project as an example of how knowledge is converted to practical application.  


Mr Adolph Tomes, Acting Business Operations Executive at SANRAL, also commended the initiative and its impact. “Although we as SANRAL are the funders and we get praise for being funders, this is a phenomenal project, and it is making a difference and changing people’s lives.” 

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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