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29 March 2022 | Story Teli Mothabeng | Photo Supplied
Philmon Bitso, Student Recruitment Officer, with the top-10 cohort of the class of 2021 Free State Star of Stars.

The Department of Student Recruitment Services at the University of the Free State (UFS) hosted its annual Free State Star of Stars competition at the Amanzi Private Game Reserve during the first week of March.  The event saw some of the brightest young minds in the Free State inducted as UFS first-year students into this year’s top-10 cohort for the competition. This marks the first Star of Stars event since the beginning of the COVID-19 pandemic. 


This new cohort consists of a dynamic group of academically gifted students from Quintile 1-3 schools in the Free State who are currently enrolled for different UFS academic programmes, ranging from Medicine, Law, Education, and various Bachelor of Science courses. Many of these students had to overcome insurmountable challenges to perform as well as they did in their Grade 12 academic year and to become part of the top-10 cohort for the class of 2021. Due to the COVID-19 pandemic, the Department of Student Recruitment Services was forced to take a different approach to celebrate these deserving students; consequently, a weekend-long induction camp was the substitute for the annual gala dinner. 

Apply for the 2022 Free State Star of Stars competition

The UFS realised the need to establish a platform that recognises and celebrates the diverse and, in most instances, difficult circumstances that disadvantaged schools (Quintile 1-3) are facing. Consequently, the Star of Stars competition was developed and established in 2016. This competition provides disadvantaged Grade 12 learners from all districts in the Free State an opportunity to showcase their excellence, while motivating them to aspire to achieve more.

Star of Stars Flyer 2022  aplicayion for the 2022 Free State Star of Stars competition open on 1 April 2022.

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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