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08 December 2020 | Story Leonie Bolleurs | Photo Supplied
At the BJCP beer judging competition, Dr Errol Cason won Best of Show with his Belgian Saison. Here he is presenting at the AfricaBrew2020 Brewing conference.

Staff and students from the University of the Free State (UFS) once again proved their skills in beer homebrewing when they walked away with one first place and two second places at the 13th annual Anheuser-Busch Inbev (AB-Inbev) – formally South African Breweries (SAB) – intervarsity beer brewing and tasting competition, and the Beer Judging Certification Programme (BJCP) competition held at the AfricaBrew2020 Brewing conference. Both these events took place over the weekend of 27 and 28 November 2020.

Evil Twin Double and Three Sips German 

Competing in the AB-Inbev/SAB Intervarsity brewing and tasting competition, was a group of students from the UFS Department of Microbial, Biochemical and Food Biotechnology, consisting of Eduvan Bischoff (PhD student), Elzette van der Walt (MSc student), Culien van der Merwe (MSc student), Gunther Staats (MSc student), and Twyne Skein (MSc student). This team came second in both the Indian Pale Ale (IPA) category with their Evil Twin Double IPA and in the Lager category with their Three Sips German Pils. 

“This is an outstanding accomplishment. Congratulations also go to our fellow Free Stater’s at the Central University of Technology (CUT) for winning the India Pale Ale (IPA) category as well as best overall beer with their New England IPA,” commented Dr Errol Cason, Senior Lecturer in the UFS Department of Animal Science, also representing the liquid yeast company LiquidCulture Yeast.

According to Dr Cason, this SAB-sponsored competition sees students from local universities brew and enter beers for judging, and competing for prizes, including the coveted ‘Best of Show’ trophy. 

“This event also aims to promote beer culture along with responsible drinking, by hosting talks by industry experts where students can interact with commercial brewers, scientists, and marketers,” says Dr Cason. 

The event was hosted by South African Breweries (SAB) and CUT, through the Centre for Applied Food Sustainability and Biotechnology (CAFSaB), in association with the UFS. 

Although the event was moved online in 2020 due to the international pandemic, it did not mean that there was a decline in the quality of presentations, or in the beer entered by universities. – D r Errol Cason

Dr Cason explains that entrants are usually challenged to brew beers according to the 2015 Beer Judge Certification Programme (BJCP) guidelines in lager, IPA, winter warmer, and fruit beer categories. 

“This year included the African Premium Ale and Lockdown Brew categories as well, where teams were mostly left to invent and experiment on their own with a few rules, such as using only indigenous African ingredients or ingredients that were available in supermarkets during lockdown,” says Dr Cason. 

There is also an award for the best bottle dress (label). 

Dr Cason believes that although the event was moved online in 2020 due to the international pandemic, it did not mean that there was a decline in the quality of presentations, or in the beer entered by universities. 

Belgian Saison and Extra Special Bitter

He and Christopher Rothmann, who is busy with a PhD in Biotechnology at the UFS and is co-founder of the company LiquidCulture (LC) Yeast, attended and presented at the AfricaBrew2020 Brewing conference. AfricaBrew is an annual brewing conference specialising in workshops and demonstrations for home and professional brewers. 

Accompanying the conference is a BJCP beer judging competition where all home and professional brewers can enter beers. During this competition, Dr Cason won Best of Show with his Belgian Saison. Rothmann came second with his Extra Special Bitter.

Since LiquidCulture Yeast was found in 2018, this commercial venture has since spun out and are now providing liquid brewing yeast to the homebrewing and commercial brewing industry. Rothmann and Dr Cason are also founding members of the Kovsie Brewery (along with Dr Jan-G Vermeulen and Eduan Hellmuth), which is currently being constructed on the UFS Paradys Experimental Farm facility.

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Dr Charlotte Boucher and Lindi Heyns examine possible anti-microbial activity in the skin of Western olive toad species
2014-12-22

 

Researchers Lindi Heyns and Dr Charlotte Boucher are working together on an interdisciplinary project between the Departments of Zoology and Entomology and Veterinary Biotechnology at the University of the Free State (UFS). The focus of their research is on the preliminary biochemical description of skin secretions in some South African toads.

The project forms part of an Honours study executed by Dwayne Pike under Heyns’ supervision. He is co-supervised by Dr Boucher who is assisting with the biochemical and microbiological assays.

Dr Boucher said, “Amphibians are characterised by the presence of cutaneous glands spread over the skin. There are two types of glands, namely mucous and granular (poison), located on the inner surface of the epidermis. Mucous glands are widely dispersed over the skin, while granular glands can be grouped and enlarged in specific regions. Mucous glands are generally associated with maintenance of humidity and cutaneous respiration, whereas granular glands function in chemical defence against predators and/or microbial infection. Studies indicate that the compounds produced by the granular glands belong to numerous chemical classes with diverse pharmacological activities.”

The products secreted by granular glands are rich in low molecular weight constituents of varied molecular types, including proteins, peptides and toxins. These secretions make the toad foul-tasting to predators and even toxic to other frog species. In addition, amphibians offer an attractive source of novel antimicrobials. Studies indicate that as a response to inhabiting microorganism-rich environments they synthesise and secrete a diverse array of antimicrobial peptides (AMPs) as an innate form of defence. Extensive research by various other research groups has been carried out on antimicrobial peptides of the genus Rana; however, hardly any studies have investigated the antimicrobial activity of African frog species.

The focus of this preliminary project is to determine the protein composition of the glandular secretions of the Western olive toad (Amietophrynus poweri), using biochemical tests, such as SDS-PAGE also known as protein gel electrophoresis combined with mass-spectrometry used to identify unknown peptides and proteins. This will give us an overview of the composition of the glandular secretions. Furthermore, we are also looking at microbiological tests, which include assays that test for possible anti-microbial activity against various bacterial and fungal species.

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