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23 September 2020 | Story Prof Theodore Petrus | Photo Supplied
Prof Theodore Petrus is Associate Professor of Anthropology at the University of the Free State.

As we as a South African nation prepare to celebrate Heritage Day on 24 September, and as we reflect on our heritage during Heritage Month, what stands out clearly is that this year’s heritage celebrations will be somewhat … different. It will not be like previous celebrations because as a country, we – along with our fellow continental and global citizens – have experienced what can be described as one of the greatest health, social, and economic challenges that we as a species have ever faced. The repercussions and impact of the COVID-19 pandemic will be felt for some time to come. And it is this realisation that may cast a little damper on our celebrations during this #Heritage Month.

But what can our shared heritage as South Africans teach us about who we are as a people, and how can this knowledge help us to adapt to and overcome the long-term challenges wrought not only by the pandemic, but also by the many other challenges facing us? 

Heritage Day is a celebration of our cultural heritage and diversity as a nation. It presents us with an opportunity to reflect on our individual and collective heritage. It is also an opportunity for us to take stock of the cultural and other resources that enable and empower us to take ownership of what we want to be as a nation, as a country, as a people. 
So, in view of the questions raised earlier, here are some ideas on what I think our shared heritage can teach us:

1. The heritage of where we come from

Inasmuch as our past is a painful one – a past that still has lingering effects decades after the transition to a democratic dispensation – it still plays a fundamental role in shaping who we are now, and who we want to become.
Colonialism and apartheid sought to suppress our indigenous cultures and traditions, and had a negative impact on our psyche, self-confidence, and dignity as indigenous and African people. But one positive that came from this, is that if it was not for our shared heritage of colonialism and apartheid, we probably would not have become the nation we needed to become to bring it to an end.  

Instead of destroying symbols of that painful past, we need to shift our perspective to re-interpret those symbols in a new way. The power of cultural symbols lies in their meanings. Symbolic anthropologist Victor Turner spoke about the ‘multivocality of symbols’, meaning that we can ascribe whatever meanings to our cultural symbols we choose. Let us reflect on how we can change the current meanings we ascribe to our cultural symbols that reflect an awareness of how the heritage of where we come from does not keep us trapped in negative and painful meanings of these symbols, but instead inspire us to create new positive meanings.

2. The heritage of where we are now

After 1994, we began the process of creating a new contemporary heritage as a nation struggling to free itself of the burden of a painful past. And while it was difficult, we have made significant strides. Yes, we do still face challenges rooted in the past: institutional and structural violence; race and diversity-related issues; intercultural and intergroup conflicts; crime and violence against men, women, and children; corruption at various levels of governance; and others. We are also faced with ‘newer’ challenges as a country that is part of the globalised world. Poverty, inequality, unemployment, slow economic growth, and ailing infrastructure are all contemporary problems, some of them rooted in the past, others the product of the contemporary context. 

What can we learn from our shared heritage of where we are now that can help us to overcome these contemporary challenges? We need to remind ourselves of what we are capable of as a nation. We have ended an oppressive regime, not once but twice. And, with all of the challenges, problems, and obstacles, we are still here.

3. The heritage of where we are going

This might sound strange, because heritage usually refers to the past and present. Rarely do we speak of heritage in a future-oriented context. However, as a nation, given our past and given our present, where we come from and where we are now determines where we are going. 

As South Africans, we need to ask the question: where do we want to go? Are we heading in that direction? If not, how do we change course so that we do go in the right direction? I have no simple answer. But what I can suggest is that it should start with critical self-reflection, both individually and collectively. We also need to ask ourselves what legacy we want to leave for future generations. Do we want them to still be struggling with the same problems and challenges that we are dealing with right now? Or do we want to leave them a legacy of a nation that stood up to its challenges, took ownership of them, and found a way to overcome them?

A globally devastating pandemic. A painful past. A present wrought with seemingly insurmountable obstacles. As a South African, as a child of the soil, I know that as a nation we can overcome, and we can emerge better and stronger. That is our heritage. The heritage of hope.

 

Opinion article by Prof Theodore Petrus, Department of Anthropology, University of the Free State 

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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