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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

Prof Antjie Krog speaks on verbalising revulsion and the collusion of men
2015-06-26

From the left are Prof Lucius Botes, UFS: Dean of the Faculty of the Humanities; Prof Helene Strauss, UFS: Department of English; Prof Pumla Gobodo-Madikizela, UFS: Trauma, Forgiveness and Reconciliation Studies; Prof Antjie Krog, UCT: Department Afrikaans and Dutch; Dr Buhle Zuma, UCT: Department of Psychology. Both Prof Strauss and Dr Zuma are partners in the Mellon Foundation research project.

“This is one of the bitterest moments I have ever endured. I would rather see my daughter carried away as a corpse than see her raped like this.”

This is one of 32 testimonies that were locked away quietly in 1902. These documents, part of the NC Havenga collection, contain the testimonies of Afrikaner women describing their experiences of sexual assault and rape at the hands of British soldiers during the South African War.

This cluster of affidavits formed the foundation of a public lecture that Prof Antjie Krog delivered at the University of the Free State’s (UFS) Bloemfontein Campus on Tuesday 23 June 2015. The lecture, entitled ‘They Couldn’t Achieve their Goal with Me: Narrating Rape during the South African War’, was the third instalment in the Vice-Chancellor’s Lecture Series on Trauma, Memory, and Representations of the Past. The series is hosted by Prof Pumla Gobodo-Madikizela, Senior Research Professor in Trauma, Forgiveness, and Reconciliation Studies at the UFS, as part of a five-year research project funded by the Andrew W. Mellon Foundation.

Verbalising revulsion

The testimonies were taken down during the last two months of the war, and “some of the women still had marks and bruises on their bodies as evidence,” Prof Krog said. The victims’ words, on the other hand, struggled to express the story their bodies told.

What are the nouns for that which one sees? What words are permissible in front of men? How does one process revulsion verbally? These are the barriers the victims – raised with Victorian reserve – faced while trying to express their trauma, Prof Krog explained.

The collusion of men

When the war ended, there was a massive drive to reconcile the Boers and the British. “Within this process of letting bygones be bygones,” Prof Krog said, “affidavits of severe violations by white men had no place. Through the collusion of men, prioritising reconciliation between two white male hierarchies, these affidavits were shelved, and, finally, had to suffer an embargo.”

“It is only when South Africa accepted a constitution based on equality and safety from violence,” Prof Krog said, “that the various levels of deeply-rooted brutality, violence, and devastation of men against the vulnerable in society seemed to burst like an evil boil into the open, leaving South African aghast in its toxic suppurations. As if, for many decades, we did not know it was there and multiplied.”

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