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05 November 2025 | Story Martinette Brits | Photo Supplied
Opus Cactus
Prof Maryna Boshoff from the Department of Sustainable Food Systems and Development, Lerato Mamabolo (UFS graduate, now employed at OPUS Cactus), and Sotirios Pilafidis, Head of Research and Development at OPUS Cactus, at the XI International Congress on Cacti as Food, Fodder and Other Uses, hosted by the FAO-ICARDA CactusNet in Tenerife, Canary Islands.

The University of the Free State (UFS) has formalised a collaboration with OPUS Cactus, a pioneering biotech company focused on sustainable cactus-based farming and biorefineries in semi-arid regions. This partnership builds on OPUS Cactus’ expansion at the historic Waterkloof Research Station near Bloemfontein and combines the UFS’ academic expertise with industry innovation to promote climate-smart agriculture and economic development.

OPUS Cactus, led by Joeri van den Bovenkamp-Hofman, CEO, and Sotirios Pilafidis, Head of Research and Development (R&D), specialises in transforming marginal, non-arable land into productive, resource-efficient ecosystems by cultivating the drought-tolerant Opuntia cactus. This versatile biomass supports renewable bioenergy, animal feed, food production, fermentation feedstock, and sustainable biomaterials, while contributing to carbon capture and climate mitigation efforts.

“Our mission is to unlock the full potential of Opuntia biomass for sustainable bioenergy, food, and biomaterials, advancing regenerative agriculture and climate action,” says Van den Bovenkamp-Hofman. OPUS Cactus operates dual hubs: its headquarters and R&D lab in Groningen, the Netherlands, and the flagship 1 000-hectare Waterkloof Research Centre in the Free State. The Waterkloof facility serves as a commercial farm, research platform, and demonstration site for regenerative farming techniques.

The UFS collaboration involves multiple departments, including Sustainable Food Systems and Development, Soil, Crop and Climate Sciences, and Microbiology and Biochemistry. Profs Maryna Boshoff and Carlien Pohl-Albertyn, alongside Dr Gesine Coetzer, provide academic leadership in the partnership.

Prof Boshoff explains, “This industry-academia collaboration aims to develop innovative projects utilising cactus-based products. It builds on decades of cactus research at the UFS, enabling the translation of scientific knowledge into real-world impact through scale-up and commercialisation.”

 

Bridging academic research and commercial innovation to promote climate-smart agriculture

At the core of the partnership is the Waterkloof Research Centre, home to 42 spineless Burbank cactus pear cultivars. The facility acts as a ‘living laboratory’, integrating empirical research with commercial-scale farming. “Waterkloof now offers students and researchers access to operational infrastructure that cannot be replicated in conventional academic settings,” says Prof Boshoff.

Continuing projects at Waterkloof include biogas production through an anaerobic digester, regenerative agriculture practices such as cover cropping and reduced tillage, advanced plant biotechnology to breed superior cultivars, fermentation research for alternative proteins, and the development of novel fermented foods and sustainable biomaterials.

The collaboration also plays a critical role in conserving Opuntia genetic diversity and evaluating cultivars across South Africa’s varied agro-ecological zones. “Research done by UFS and ARC scientists on cultivar selection and cultivation is applied and scaled up through OPUS Cactus’ commercial operations,” Prof Boshoff adds.

This partnership provides valuable hands-on experience and career pathways for postgraduate students and young researchers. “We offer internships and employment opportunities, with several recent UFS graduates already joining our R&D team,” says Pilafidis. “We actively seek motivated graduates passionate about sustainable agriculture and bioengineering.”

By converting semi-arid landscapes into productive, carbon-sequestering ecosystems, the UFS-OPUS Cactus collaboration exemplifies how scientific innovation, entrepreneurship, and environmental stewardship can drive climate resilience, food security, and sustainable economic growth.

“OPUS Cactus is a win for the environment, communities, and business alike,” concludes Van den Bovenkamp-Hofman.

News Archive

UFS hosts first SA Digital Sky Academy at the Naval Hill Planetarium
2015-10-02


From the left are: Prof Neil Heideman
(Dean: Faculty of Natural and Agricultural Sciences, UFS),
Jack White (Director: Sky-Skan Oceania),
Dr Michelle Cluver (Department of Astronomy, University of the Western Cape),
Martin Ratcliffe (Director: Professional Development, Sky-Skan).
Photo: Mart-Mari Duvenhage

South Africa hosts some of the world’s largest telescopes, and won the bid to co-host the SKA recently. So it’s not surprising that there is unprecedented interest in Astronomy in our country. Astronomy is seen as a gateway subject that attracts people to the sciences, while planetariums help to make Astronomy accessible to millions of people.  Digital planetariums are especially powerful teaching tools because they are versatile, offer an immersive experience, and explain and illustrate three-dimensional concepts effectively.  On the other hand, scientists, are eager to exploit a digital planetarium’s potential to represent and explore data visually, whether the data relate to medicine, astronomy, chemistry, the environment, or other fields of research.

The four-day ‘Digital Sky Academy’ (DSA) presented at the Naval Hill Planetarium in Bloemfontein from 18 - 22 September 2015 was an opportunity to offer training and first-hand experience of digital planetarium technology to representatives from other centres in South Africa. The Department of Physics at the University of the Free State (UFS) was the host of this event.

The Department of Science and Technology has designated the Naval Hill Planetarium as the South African hub for the training of digital planetarium presenters and operators. In addition to attracting interest from scientists and future planetarium operators and presenters, the DSA workshop provided an invaluable opportunity for our presenters to hone their skills.

A number of experienced and distinguished people attended the workshop. Among them was Dr Mark SubbaRao from Chicago in the United States, who shared information on data visualisation techniques used in the Adler Planetarium. Jack White, Director of Sky-Skan, one of the few companies that provide digital technology for planetariums throughout the world, coordinated the event in partnership with Prof Matie Hoffman from the Department of Physics at the UFS.

Jack travelled from Melbourne in Australia to oversee the workshop. Two Sky-Skan colleagues from the United States, Martin Weiss and Martin Ratcliffe, were on hand to share their expertise on digital planetarium hardware and software. The workshop programme included Skype conference calls with other US-based planetarium experts. Amongst the delegates to the DSA representatives from the SKA, the Iziko Museum, and five South Africa universities. They were here to gain experience, explore the capacity of the digital facility, and share ideas on future collaboration.

During the workshop, a public lecture was held on 19 September. Dr Michelle Cluver from the University of the Western Cape gave a presentation entitled, ‘More than the eye can see: the significance of infrared light in Astronomy.’

 

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