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16 October 2020 | Story Leonie Bolleurs | Photo Supplied
Dr Jan Swanepoel believes that the agricultural sector must be assisted in every possible way to shift its focus from mere subsistence farming, as is still the case in many parts of the world, to sustaining the lives of millions of people on the planet.

17 October is marked as International Day for the Eradication of Poverty by the United Nations (UN). 

The University of the Free State (UFS) is involved in several initiatives aimed at empowering communities to create a sustainable livelihood for themselves in the long run.

One of these initiatives includes a project to build competitiveness for communal farmers by developing the wool value chain in the Free State. 

The UFS Centre for Sustainable Agriculture, Rural Development and Extension (CENSARDE) submitted a proposal to the Regional Universities Forum for Capacity Building in Agriculture (RUFORUM); their proposal was selected, and they were awarded a grant of US$300 000. 

Dr Jan Swanepoel, Senior Lecturer and Researcher at CENSARDE, says the world is moving from local and national markets towards a global system of trading. This means that neighbouring farmers working on small plots of land may be competing with large industrial farmers from another country in a single marketplace.

A drive to commercialise

He adds that in developing countries, there is increasing pressure on farmers to commercialise their operations. “In order to meet the drive for greater commercialisation, new skills must be developed to support farmers in becoming better entrepreneurs. Assistance towards infrastructure must be provided; and the needs of farmers, such as market access, must be identified and catered for.”

Dr Swanepoel points out that the agricultural sector must be assisted in every possible way to shift its focus from mere subsistence farming, as is still the case in many parts of the world, to sustaining the livelihoods of millions of people on the planet. 

“As the agricultural sector starts to realise this more fundamental role and responsibilities with regard to production, new strategies can be conceived towards the enhancement of the socio-economic status of all role players in the agricultural sector,” he says.

One of the industries that agriculture in South Africa can expand on, is the wool industry. 

“China is the biggest buyer of South African wool. During lockdown, no wool from South Africa was exported to China, causing the price of wool to drop significantly. Fortunately, the markets have opened up, the excess wool from Australia has been absorbed, and China is buying wool at full capacity now. Even though the price of wool is 30% below the price of last year, the markets are reacting positively, showing a steady increase. Wool buyers believe that this trend will continue due to international market demand exceeding the supply,” says Dr Swanepoel.

He also believes the creation of niche products from the wool will add to the existing value chain, creating more jobs and an opportunity for enlarging the export market.

Profitable and sustainable venture

CENCARDE is involved in an attempt to transform communal woolgrowers’ production from an underachieving enterprise to a profitable, sustainable, and renewable venture to enhance the livelihoods of communal wool producers. 

“In addition, with the extension of the value chain directly to consumers, job creation and development plays a vital role in supporting the South African National Treasury’s strategy,” adds Dr Swanepoel.

This project is thus built around the commercialisation of wool production in the communal areas of the Free State, by developing strategies to be implemented concurrently in order to attempt to manage the various challenges faced by these growers. 

As part of this project, a centralised infrastructure hub will be established on the UFS experimental farm to support wool production and processing. Woolgrowers, sheepshearers, and men and women from the community will also be equipped with the necessary skills and knowledge to operate in the wool industry. Adding to these skills, members of the community will be taught entrepreneurial skills in different aspects of wool processing, such as knitting, making felt products, spinning, and weaving. 

Another helpful aspect of this project is linking the communal woolgrowers to markets, and in so doing, giving them a collaborative advantage.

Educational benefits

However, not only communal woolgrowers will benefit from this programme. It also has educational benefits, as the project is designed to incorporate research. According to Dr Swanepoel, CENSARDE is very committed and are using this project as a pilot to demonstrate the potential for a more multidisciplinary, multi-stakeholder approach to education, research, and development. Fifteen students will directly benefit from this project, including two PhD and three master’s students.

Also adding value to the project is the development of private partnerships in the form of the Dohne Merino Breed Society, commercial farmers, and other key wool marketing agencies – which will assist with technical matters and knowledge – as well as the Free State Department of Agriculture.

All participants strive for more profitable and competitive communal woolgrowers in a changing global wool market. The project is not another educational exercise but will equip woolgrowers to change their circumstances for the better.

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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