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10 June 2022 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Christopher Rothmann
Christopher Rothmann is standing in one of the containers that will form part of the science park for entrepreneurs.

Adding to the value chain, extending the teaching and learning process, and supporting the development of the surrounding communities – this is the result of seven years of hard work for the Paradys Experimental Farm of the University of the Free State (UFS). Whether it is yoghurt and cheese from the dairy factory, wool products from the wool production and wool processing hub, or an ice-cold beer from the fermentation institute, the farm will soon share the fruits of its labour with the Bloemfontein community.

Situated outside Bloemfontein on the road to Reddersburg, the farm is an agricultural training centre in the Faculty of Natural and Agricultural Sciences for UFS students who, among others, take modules in agriculture, working with cattle, sheep, crop cultivation, and milk production. Moreover, the farm also offers training opportunities to members of the community, ranging from short courses in animal health and animal breeding to workshops in wool classing, sheep handling, and sheep management. 

“We want to take students through the entire production chain. It is a valuable part of our teaching and can make our work on the farm more profitable. The aim is to extend the use of a specific product. Instead of only selling milk, we add value to the product and sell it, for instance, as cheese or yoghurt. Or in the case of grain, rather than only selling it to wholesalers to make bread, it can be fermented into beer and waste can be used as animal feed,” says Prof Frikkie Neser, Head of the Department of Animal Sciences. He is the convenor of this initiative, along with the Dean of the Faculty of Natural and Agricultural Sciences, Prof Danie Vermeulen.

Currently, eight departments in four of the faculties at the UFS are involved in the work on the experimental farm. 

Natural products in the dairy processing unit

Dr Analie Hattingh, Manager of the dairy processing unit and Lecturer in the Department of Animal Science, is responsible for the entire production process in the dairy processing unit, from concept development up to sales. Since the installation of the unit started in May 2021, two lines of cheese have been produced – a delicious semi-hard, full-cream all-rounder, and a more exotic cheese with different flavours, containing ingredients such as cumin, chili, garlic, peppercorns, and mango. The Department of Sustainable Food Systems and Development (CENSARD) will later cultivate and harvest some of these herbs in the tunnels on the experimental farm. The department will also be involved in product development.

More recently, Dr Hattingh also started to investigate the development of a yoghurt line with different flavours – the more traditional mixed fruit and strawberry, as well as more exciting flavours such as pear caramel.   

“All our products are natural,” she says. 

This initiative adds to the already established centralised infrastructure hub on the experimental farm, which supports wool production and processing. Under the auspices of CENSARD, members from the community are taught, among others, entrepreneurial skills in different aspects of wool processing, such as knitting, making felt products, spinning, and weaving. 

The group of women in the wool processing unit is producing, among others, felt pencil cases, laptop bags, hand/
bookbags, tray cloths, and soft toys. 
Photo: Leonie Bolleurs. 

Creating products from dairy and wool is not only contributing to job creation; it also empowers communities to create a sustainable livelihood for themselves.

Award-winning beer 

Award-winning beer makers Dr Errol Cason, Senior Lecturer in the Department of Animal Science, and Dr Christopher Rothmann, postdoctoral research fellow in the Department of Animal Sciences, are looking forward to opening a fermentation institute on the Paradys Experimental Farm. 

With their background as microbiologists, the two founders of Liquid Culture (in 2018) produced commercial batches of yeast used mainly by breweries for the fermentation of beer. They are supplying Bloemfontein as well as several breweries nationwide with their quality yeast. 

At the fermentation institute on the farm, these home brewers and owners of Kraft Brewing Co hope to not only continue brewing bear, but to also teach others about the fermentation process. Installation of the vessels, which were previously part of the South African Brewery’s World of Learning, is almost complete.

Dr Errol Cason, Dr Christopher Rothmann, and Barry Crous
Dr Errol Cason, Dr Christopher Rothmann, and Barry Crous at what will soon be a fermentation institute on
the Paradys Experimental Farm. 
Photo: Leonie Bolleurs

Entrepreneur science park 

Prof Neser says they are also in the process of constructing an entrepreneur (science) park for students in the sciences. Upon completion, the park will boast nine containers with the necessary infrastructure for students to work on innovation projects – promoting an entrepreneurial culture at the UFS. 

The farm will also provide a service to the agriculture industry by testing feed intake and growth rate in cattle, evaluating these animals’ efficiency in converting feed to body mass. Prof Neser says the UFS is the only university conducting these tests on cattle. Similar trials will also be conducted on sheep, in collaboration with BKB, ALPHA, and RFID.

Grass has been planted in the open areas, and trees and tables with benches are planned to create a welcoming space for school groups to visit during the week in order to learn about the wool and dairy value chain. Members of the community will also be invited to display and sell their products on Saturdays, along with the goods produced on the farm. The scene is set, and soon all projects will benefit not only UFS staff and students, but also the community.

Dr Analie Hattingh is constantly looking at developing
new products for the dairy processing 
unit. Here she
i
s testing feta cheese. 


News Archive

Research on cactus pear grabs attention of food, cosmetic and medical industry
2015-02-18

Cactus pear
Photo: Charl Devenish

The dedicated research and development programme at the UFS on spineless cactus pear (Opuntia ficus-indica) – also known as prickly pear – has grown steadily in both vision and dimension during the past 15 years. Formal cactus pear research at the UFS started with the formation of the Prickly Pear Working Group (PPWG) in June 2002. It has since gone from strength to strength with several MSc dissertations and a PhD thesis as well as popular and scientific publications flowing from this initiative.

According to Prof Wijnand Swart from the Department of Plant Sciences, the UFS is today recognised as a leading institution in the world conducting multi-disciplinary research on spineless cactus pear.

Cactus pear for animal feed

Increasing demands on already scarce water resources in South Africa require alternative sources of animal feed – specifically crops that are more efficient users of water. One alternative with the potential for widespread production is spineless cactus pear. It is 1.14 x more efficient in its use of water than Old man saltbush, 2.8 x more efficient than wheat, 3.75 x more efficient than lucerne and 7.5 x more efficient than rangeland vegetation.

“Studies on the use of sun-dried cactus pear cladodes suggest that it has the potential to provide some 25% of the basic feed resources required by South Africa’s commercial ruminant feed manufacturing sector,” says Prof HO de Waal of the Department of Animal, Wildlife and Grassland Sciences at the UFS.

Until recently, research has focused extensively on the use of cactus pear as drought fodder. However, this is now beginning to shift, with growing interest in the intensive production of spineless cactus pear for other types of animal feed. One example is the spineless cactus pear fruit, produced seasonal, yielding large quantities of fruit in a relatively short period of a few months in summer. Unless kept in cold storage, the fruit cannot be stored for a long period. Therefore, a procedure was developed to combine large volumes of mashed cactus pear fruit with dry hay and straw and preserve it for longer periods as high moisture livestock feed, kuilmoes – a high water content livestock feed similar to silage.

Cactus pear and Pineapple juice
Photo: Charl Devenish

Cactus pear for human consumption

“In addition to its use as a livestock feed, cactus pear is increasingly being cultivated for human consumption. Although the plant can be consumed fresh as a juice or vegetable, significant value can be added through processing. This potential is considerable: the plant can be pickled; preserved as a jam or marmalade; or dried and milled to produce baking flour. It can also serve as a replacement of egg and fat in mayonnaise,” said Dr Maryna de Wit from the Department of Microbial, Biochemical and Food Biotechnology.

The extraction of mucilage from fresh cladodes can form a gelling, emulsifier, and fat-replacing agent commonly found in food products such as mayonnaise and candy. During an information session to the media Dr De Wit and her team conducted a food demonstration to showcase the use of the cladodes in a juice, chicken stir-fry, biscuits and a salad.

The extrusion of cactus pear seed oil provides a further lucrative niche product to the array of uses. These include high-value organic oil for the cosmetic sector, such as soap, hair gel and sun screens.

The cladodes and the fruit also have medicinal uses. It has anti-viral, anti-inflammatory, pain killing and anti-diabetic agents. It is also high in fibre and can lower cholesterol. The fruit also prevents proliferation of cells and suppresses tumour growth and can even help to reduce a hangover.

In South Africa the outdated perception of cactus pears as thorny, alien invaders, is rapidly disappearing. Instead, farmers now recognise that cactus pear can play a vital role as a high yielding, water-efficient, multi-use crop, said Prof de Waal and the members of the Cactus Pear Team.

Facebook photo gallery
Dagbreek interview with Dr Maryna de Wit  

Research on cactus pear (read the full story)

For more information or enquiries contact news@ufs.ac.za

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