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11 July 2022 | Story Valentino Ndaba | Photo Pexels
Dr Maramura
Dr Tafadzwa Maramura says she carved her path by remaining focused and resolute on her journey.

The African proverb ‘it takes a village to raise a child’ conveys the message that it requires many people to provide a safe and healthy environment for children. The village gives the child the security needed to develop and be able to realise their hopes and dreams. 

Dr Tafadzwa Maramura believes that the same applies vice versa. “It takes a good child to be raised by a village. You need to understand that the village can only do so much, the rest lies on your shoulders as the child,” she says.

The journey of a child raised by a village
The senior lecturer reflects on the journey that led her to serve in the Department of Public Administration and Management at the University of the Free State. At the age of three, she lost her father, who was an army general in Zimbabwe. Soon after, her academic journey would begin at a boarding school. Her widowed mother then moved her to a mission school due to financial constraints, seeing that she had two more children relying on her for survival. Since her father served in the government, she qualified for a state scholarship, which saw her launch her academic career in South Africa as an undergraduate student. 

“I came to South Africa in 2010 and pursued a Bachelor of Social Science degree in Development Economics at the University of Fort Hare. Once my honours were conferred, I acquired my master’s within a year. Thereafter, I enrolled at the North-West University, where I completed my PhD within two years.”

Dr Maramura was the Vice-Chancellor’s valedictorian for her bachelor, honours, and 
master’s degrees. Graduating cum laude was another way of ensuring that she pays it forward to the village that raised her. Not only was she funded by the Zimbabwean government, but she also received financial aid from South Africa throughout her studies. 

Once a child, now part of the village 
Today, as founder of a foundation based in Zimbabwe, she pays the fees of orphaned and disadvantaged primary school learners. “I wish everyone could adopt a child, pay their fees, buy their schoolbooks – because we only have each other, we do not have anyone else. That’s also part of what I call co-creating.”

The Brightest Young Minds in Africa alumna goes above and beyond focusing on academics, as she believes that “if you are the only one holding the light, everyone else will have to follow behind you to make sure that they can see ahead. However, if you share that light, then it means many more can see, therefore making it easier to solve societal challenges as a collective”.

She argues that the amount of money you spend on lunch could pay a child’s school fees for a term, and the cash that you use to buy a jacket or a pair of shoes, could cover a child’s fees for a month.
Making a difference in the lives of young children is her way of playing the role of the village now that she is an adult. “I make sure that wherever I am, I make an impact in the lives of others.”

Dr Maramura says she plans to make sure that life is better for the next young African female, by setting up a mentorship programme for the next generation of leaders. In addition to that, her goal is to become an associate professor, rise in academic rank, and develop a research unit that can speak to issues of sustainable service delivery.

On how to be a good child 
You do not need to be a figure of authority to make an impact. According to Dr Maramura, all you need is a desire to co-create, and making sure that the public is in a different place after you have left the relevant office you hold or the organisation you serve. “Make sure that you can co-exist, because humans don’t live in a vacuum, we exist among each other.”

Serving the people makes all the difference. She suggests that everyone asks themselves what they are doing for their community, class, or family. 

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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