Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
30 March 2021 | Story Dikgapane Makgetha | Photo Supplied
Social Work students at the UFS are working with the relevant stakeholders in an Engaged Teaching and Learning service-learning project to promote and respect children’s rights.

The protection of children’s rights is the principal achievement on the Sustainable Development Goals (SDGs) 2030 Agenda. Emphasis has always been on the promotion and respect of children’s rights. Since the SDGs are grounded in a child rights-based approach, the University of the Free State (UFS) Social Work students – by engaging in a multi-disciplinary methodology – involve all the relevant stakeholders in their Engaged Teaching and Learning service-learning module project. 

The social partners, which included the South African Police Service (Child Protection Unit), the Department of Social Development, the Department of Home Affairs, the Department of Health, faith-based organisations, and other children’s advocacy agents, were involved from inception until the apex launch of the project. 

Access to basic human rights

In their exit level, fourth-year Social Work students participate in community work practicums, which incorporates the theoretical development process in adherence to the objectives of their community work. The initial phase of the project involved the situation analysis exercise, which the students implemented through collaboration with the Rekgonne Primary School action committee. 

The outcome of the survey indicated that some learners were exposed to physical and sexual abuse. It was also found that they did not have access to basic human rights such as education, health care, and social grants due to the absence of the required legal documents. From the interactive discussions that took place during the launch, it emerged that some children do not have birth certificates required for school registration and access to social grants. 

Through the students’ community project, a platform was created where important skills and information could be shared among all important role players (who are in different professions and guardians of children’s human rights). It is believed that since learners are spending more hours in school, educators would be the primary detectors to notice signs of negligence and potentially adverse circumstances among their learners.

Role players collaborate to make a difference

Through the scholarship of engagement, students succeeded in engaging with the community to attend to societal challenges (violated children’s rights). In order to realise the outcome of the project, continuous collaboration among all role players must be sustained. All parties adopted a resolution to create safe environments both at school and at home by supporting families and caregivers.

Government partners that participated were determined to strengthen protection systems and improve child welfare, reinforcing the implementation of the Children’s Act 38 of 2005.  Educators were empowered and supported in the mandate of the Quality Learning and Teaching Campaign (QLTC). This is an initiative that involves stakeholders in improving the quality of education for all children and addresses issues of safety and well-being for all children. 

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.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept