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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.

News Archive

Research helps farmers save with irrigation
2017-02-15

Description: Irrigation research Tags: Irrigation research

Marcill Venter, lecturer in the Department of
Agricultural Economics at the University of the
Free State, has developed the mathematical
programming system, Soil Water Irrigation
Planning and Energy Management in order to
determine irrigation pump hours.
Photo: Rulanzen Martin

Her advice to farmers is that they should make sure they are aware of the total cost (investment and operating costs) of an irrigation system. In most cases the investment cost is low, but the operating cost over the lifetime of the system is high.

“It is very important to have a look at the total cost and to install the most economic system,” says Marcill Venter, lecturer at the University of the Free State (UFS), who has done research on the economic sustainability of water-pipe systems.

Irrigation systems important components for farming
This research comes at a time when many farmers are relying on their irrigation systems due to persistent drought and low rainfall during 2016. South Africa has also experienced an abnormal increase in electricity tariffs in recent years. Due to tariff increases which threaten the future profitability of irrigation producers, the Water Research Commission (WRC) has launched and financed a project on the sustainable management of irrigation farming systems. “I had the opportunity to work on the project as a researcher,” says Venter.

The heart of every irrigation system is the water pipes that bring life to crops and livestock, and this is what Venter’s research is about. “Water pipes are part of the whole design of irrigation systems. The design of the system impact certain factors which determine the investment and operating costs,” she says.

Mathematical system to help farmers
Venter and Professor Bennie Grové, also from the Department of Agricultural Economics at the UFS, designed the Soil Water Irrigation Planning and Energy Management (SWIP-E) programming model as part of the WRC’s project, as well as for her master’s degree. “The model determines irrigation pump hours through a daily groundwater budget, while also taking into account the time-of-use electricity tariff structure and change in kilowatt requirements arising from the main-line design,” says Venter. The model is a non-linear programming model programmed in General Algebraic Modeling System (GAMS).

Design of irrigation system important for sustainability

The main outcome of the study is that the time-of-use electricity tariff structure (Ruraflex) is always more profitable than the flat-rate structure (Landrate). The interaction between the management and design of a system is crucial, as it determines the investment and operating costs. Irrigation designers should take the investment and operating cost of a system into account during the design process. The standards set by the South African Irrigation Institute (SAII) should also be controlled and revised.

Water-pipe thickness plays major role in cost cuts
There is interaction between water-pipe thickness, investment and operating costs. When thinner water pipes are installed, it increases the friction in the system as well as the kilowatt usage. A high kilowatt increases the operating cost, but the use of thinner water pipes lowers the investment cost. Thicker water pipes therefore lower the friction and the kilowatt requirements, which leads to lower operating costs, but thicker pipes have a higher investment cost. “It is thus crucial to look at the total cost (operating and investment cost) when investing in a new system. Farmers should invest in the system with the lowest total cost,” says Venter.

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