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17 May 2022 | Story Lunga Luthuli | Photo Supplied
University of Limpopo visits UFS Protection Services
Staff from the University of the Free State Department of Protection Services pictured with the delegation from the University of Limpopo during their benchmarking visit.

The University of the Free State Department of Protection Services hosted a delegation from the University of Limpopo on Friday, 13 May 2022 as part of benchmarking best protection service practices. 

During the visit, discussions included the management of student protests, gender-based violence, fire emergency responses, and challenges experienced with the Campus Protection Society of Southern Africa.

The visit by the University of Limpopo follows similar benchmark visits by the Central University of Technology, Sol Plaatje University, and the University of Johannesburg.

Noko Masalesa, Senior Director: Protection Services, said: “The visit by the University of Limpopo was used to take them through our vision 2024, to show them some of the advanced CCTV cameras that the UFS has installed, the policies, and organisational structure. Part of that strategy is to enhance the university’s security technology in line with the best practices.”

Masalesa said: “The UFS has a good model to manage all the different functional areas of the Department of Protection Services, and most universities are impressed with the new CCTV cameras that we rolled out and the other advances made in the development of protection services over the past five years.”

To remain among the leaders in protection services within the higher education, the department also visited Stellenbosch University, the University of Cape Town, Cape Peninsula University of Technology, and the University of Nairobi and Kenyatta University – both in Kenya.

Mampuru Mampa, Director: Safety and Security at the University of Limpopo, said: “Like other institutions, the University of Limpopo is dealing with crimes affecting students on and off campus, as well as student protests. Fostering collaboration and benchmarking will assist our protection service departments to develop and implement a standardised approach to improve safety on our campuses.”

On lessons learnt during the benchmarking tour, Mampa said: “We have learnt about security system integration, investigation systems approach, off-campus security, and student protest management.”

Mampa believes “it is important for protection service departments across the higher education sector to develop standardised security measures to improve safety, and benchmarking assists in closing gaps in protection services”.

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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