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10 September 2019 | Story Rulanzen Martin | Photo Rulanzen Martin
Lingustics
Delegates at the workshop were provided opportunities that many larger conferences do not offer.

The growing body of work examining microvariation in African languages prompted Dr Kristina Riedel and Dr Hannah Gibson, from the University of Essex and research fellow, to work on a research project, “Variation in Sesotho and Setswana as spoken in the Free State”, to document the dialectal variation in the languages as it is spoken in the province. 

“Dr Gibson and I have a joint research project which is funded by a Newton British Academy mobility grant,” says Dr Riedel, Head of the Department of Linguistic and Language Practice at the University of the Free State (UFS).

The duo hosted a workshop on morphosyntactic microvariation (small structural differences that can be observed between closely related languages or dialects) on the UFS Bloemfontein Campus, as part of the Newton Fund research project.  

Research focus on dialectal variation 

Dr Riedel says there has been some linguistic work on both of these languages. “But for Sesotho, linguists have noted that there is no dialectal variation. This seems hard to believe given the size of the population who speak the language,” she says. 

They are looking at speakers in the Free State province for differences in both languages. Speakers themselves also report awareness of dialectal differences and variation between different regions. “We’re also interested in whether they have influenced each other – particularly in places where people speak both of these languages on a day-to-day basis, such as Thaba ’Nchu and Bloemfontein,” Dr Riedel says.

Dr Riedel believes that in the context of an African university it is important to contribute to the development, teaching and support of African languages. “Research on African languages can play an important part of this picture. Furthering our knowledge and understanding of African languages from a linguistic perspective also contributes to our understanding of the world’s languages and linguistic diversity.” 

Workshop creates space for training and skill sharing

The aim of the workshop was to bring together researchers, students and language practitioners to “provide them with some of the insights and training that is helpful when looking at morphosyntactic microvariation”, Dr Riedel says.

The workshop was conducted in two sets. At the first workshop the emphasis was on training and sharing of skills and the second part focused on more research-related presentations. 

The workshop, which took place on 19 July 2019, was attended by delegates from numerous local institutions (Rhodes University, University of the Western Cape and Stellenbosch University) as well as universities in the rest of Africa including the University of Malawi, Dar es Salaam University College of Education and Makerere University in Uganda. 

News Archive

Carbon dioxide makes for more aromatic decaffeinated coffee
2017-10-27


 Description: Carbon dioxide makes for more aromatic decaffeinated coffee 1b Tags: Carbon dioxide makes for more aromatic decaffeinated coffee 1b 

The Inorganic Group in the Department of Chemistry
at the UFS is systematically researching the utilisation
of carbon dioxide. From the left, are, Dr Ebrahiem Botha,
Postdoctoral Fellow; Mahlomolo Khasemene, MSc student;
Prof André Roodt; Dr Marietjie Schutte-Smith, Senior Lecturer;
and Mokete Motente, MSc student.
Photo: Charl Devenish

Several industries in South Africa are currently producing hundreds of thousands of tons of carbon dioxide a year, which are released directly into the air. A typical family sedan doing around 10 000 km per year, is annually releasing more than one ton of carbon dioxide into the atmosphere.

The Inorganic Chemistry Research Group in the Department of Chemistry at the University of the Free State (UFS), in collaboration with the University of Zurich in Switzerland, has focused in recent years on using carbon dioxide – which is regarded as a harmful and global warming gas – in a meaningful way. 

According to Prof André Roodt, Head of Inorganic Chemistry at the UFS, the Department of Chemistry has for the past five decades been researching natural products that could be extracted from plants. These products are manufactured by plants through photosynthesis, in other words the utilisation of sunlight and carbon dioxide, nitrogen, and other nutrients from the soil.

Caffeine and chlorophyll 
“The Inorganic group is systematically researching the utilisation of carbon dioxide. Carbon dioxide is absorbed by plants through chlorophyll and used to make interesting and valuable compounds and sugars, which in turn could be used for the production of important new medicines,” says Prof Roodt.

Caffeine, a major energy enhancer, is also manufactured through photosynthesis in plants. It is commonly found in tea and coffee, but also (artificially added) in energy drinks. Because caffeine is a stimulant of the central nervous system and reduces fatigue and drowsiness, some people prefer decaffeinated coffee when enjoying this hot drink late at night. 

Removing caffeine from coffee could be expensive and time-consuming, but also environmentally unfriendly, because it involves the use of harmful and flammable liquids. Some of the Inorganic Group’s research focus areas include the use of carbon dioxide for the extraction of compounds, such as caffeine from plants. 

“Therefore, the research could lead to the availability of more decaffeinated coffee products. Although decaffeinated coffee is currently aromatic, we want to investigate further to ensure better quality flavours,” says Prof Roodt.

Another research aspect the team is focusing on is the use of carbon dioxide to extract chlorophyll from plants which have medicinal properties themselves. Chemical suppliers sell chlorophyll at R3 000 a gram. “In the process of investigating chlorophyll, our group discovered simpler techniques to comfortably extract larger quantities from green vegetables and other plants,” says Prof Roodt.

Medicines
In addition, the Inorganic Research Group is also looking to use carbon dioxide as a building block for more valuable compounds. Some of these compounds will be used in the Inorganic Group’s research focus on radiopharmaceutical products for the identification and possibly even the treatment of diseases such as certain cancers, tuberculosis, and malaria.

 

 

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