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13 March 2020 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Team from the UFS Microbiology department
From the Department of Microbiology and Biochemistry, were from the left, front: Dr Mariana Erasmus, Prof Martie Smit, Samantha McCarlie; back: Dr Carmien Tolmie; Samantha McCarlie, Prof Dirk Opperman, and Prof Robert Bragg. They believe publishing in high-impact factor journals reflects the quality of research delivered by the department.

Researchers in the Department of Microbial, Biochemical and Food Biotechnology at the University of the Free State (UFS) published their work in four impact factor eleven journals in 2019/2020, and a fifth was accepted for publication in a journal with impact factor twelve in 2020. 

Two articles were published in Nature Communications, one in Drug Resistance Updates and one in Natural Product Reports. A fifth article is already available as an accepted article at Angewandte Chemie. Researchers in the department work on very diverse topics, as reflected in the titles of these articles: ‘A chemo-enzymatic oxidation cascade to activate C–H bonds with in situ generated H2O2’; ‘Native roles of Baeyer–Villiger monooxygenases in the microbial metabolism of natural compounds’; ‘The genome of a subterrestrial nematode reveals adaptations to heat’; ‘Molecular basis of bacterial disinfectant resistance’; and ‘CYP505E3 – a novel self‐sufficient ω‐7 in‐chain hydroxylase’.

Publishing in journals with a high impact factor is quite an achievement. Publishing in a journal with an impact factor of 3 is considered good and in most fields of study, publishing in journals with an impact factor of 10 or more is regarded as excellent. Impact factors are used to measure the importance of a journal by counting the number of times articles were cited in a certain time period. 

According to Prof Martie Smit, Head of the department, this is a reflection of the quality of research delivered by the department. “It is difficult and takes a lot of time and resources to publish in such high-impact journals.”

Contributing to their success in the department, is the work of their collaborators as well as the quality international postdoctoral researchers the department manages to attract with their emphasis on quality research.

Another highlight in the publication of these articles was that members of the department were corresponding authors of four of the five articles – meaning that the research was conducted in and driven from their laboratories, with UFS researchers taking primary responsibility for the preparation of the manuscripts and communicating with the editors of the journals.

Impacting society

Besides publishing in journals with high impact factors, these researchers are also making a difference to society. Prof Robert Bragg contributed to the study focusing on quality disinfectants. 

We are all aware of the danger of developing resistance to antibiotics. According to Prof Bragg, it is estimated that by 2050, 25 million people could be dying from antibiotic resistance-related bacterial infections per year. He says one of the best options to control diseases – not only bacterial diseases, but also viral diseases such as the Covid-19 outbreak – is good biosecurity and the use of good-quality disinfectants.

Researchers working on this study are trying to understand the development of resistance in bacteria to disinfectants. “This research group is currently investigating the ways in which bacteria become resistant to different high-quality disinfectants. The aim of this work is to discover new methods of resistance and then try to prevent bacteria from becoming resistant to commonly used disinfectants. One of the first aspects that needs investigation is to understand the methods of transfer of genetic information between bacteria. This work formed the basis of the review article written with master’s student Samantha McCarlie on transfer of genes that could code for disinfectant resistance in bacteria,” says Prof Bragg.

Studies about a nematode species discovered 1,3 km deep in a gold mine in Welkom and its ability to survive in extreme environments, made headlines about nine years ago. More extensive research has been performed on deep-space exploration of nematodes surviving extreme environments and were published in Nature Communications. Dr Mariana Erasmus, Assistant Director in the department and Technology Innovation Agency/UFS Saense Platform manager, says the study published in 2019 reveals these nematodes’ adaptation to heat and heat tolerance in an unusual ecosystem isolated from the surface biosphere. More studies on this can help humans learn how to adapt to a warming climate. 

TIA is an agency of the Department of Science and Innovation.

Three of the articles are from the Biocatalysis and Structural Biology group of Prof Dirk Opperman, Prof Martie Smit, and Dr Carmien Tolmie. Biocatalysis is a form of green chemistry that aims to produce chemicals in an environmentally friendly and sustainable manner. The research of the group focuses on using enzymes (proteins performing specialised chemical reactions) to insert an oxygen atom at a specific position in a starting material. Such reactions are difficult to perform using purely organic chemistry. 

The end products are value-added compounds of interest to, among others, the flavour and fragrance industry, which place a high premium on natural products. The work on the novel in‐chain hydroxylase was also patented internationally, because it can be used for the synthesis of a valuable flavour compound.
 
More to come

Besides the commitment of the team in Microbiology, it took multiple institutions, dedicated postdoctoral students, as well as time and money to publish this number of articles in high-impact journals in just over a year. With its 100-plus researchers varying from student researchers to NRF-rated scientists, everyone in the Department of Microbial, Biochemical and Food Biotechnology strives to produce high-quality research. 

And they promise, there is more to come. Watch this space …

News Archive

Code-switching, tokenism and consumerism in print advertising
2014-10-27

Code-switching, linguistic tokenism and modern consumerism in contemporary South African print advertising. This is the current research focus of two lecturers from the Faculty of the Humanities at the UFS, Prof Angelique van Niekerk and Dr Thinus Conradie.

The act of switching between two or more languages is replete with socio-cultural meaning, and can be deployed to advance numerous communicative strategies, including attempts at signalling cultural familiarity and group affiliation (Chung 2006).

For advertising purposes, Fairclough’s (1989) seminal work on the ideological functions of language remark on the usefulness of code-switching as a means of fostering an advertiser-audience relationship that is conducive to persuasion. In advertising, code-switching is a valuable means with which a brand may be invested with a range of positive associations. In English-dominated media, these associations derive from pre-existing connotations that target audiences already hold for a particular (non-English) language. Where exclusivity and taste, for example, are associated with a particular European language (such as French), advertising may use this languages to invest the advertised brand with a sense of exclusivity and taste.

In addition, empirical experiments with sample audiences (in the field of consumer research) suggest that switching from English to the first language of the target audience, is liable to yield positive results in terms of purchase intentions (Bishop and Peterson 2011). This effect is enhanced under the influence of modern consumerism, in which consumption is linked to the performance of identity and ‘[b]rands are more than just products; they are statements of affiliation and belonging’ (Ngwenya 2011, 2; cf. Nuttall 2004; Jones 2013).

In South African print magazines, where the hegemony of English remains largely uncontested, incorporating components of indigenous languages and Afrikaans may similarly be exploited for commercial ends. Our analysis suggests that the most prevalent form of code-switching from English to indigenous South African languages represents what we have coded as linguistic tokenism. That is, in comparison with the more expansive use of both Afrikaans and foreign languages (such as French), code-switching is used in a more limited manner, and mainly to presuppose community and solidarity with first-language speakers of indigenous languages. In cases of English-to-Afrikaans code-switching, our findings echo the trends observed for languages such as French and German. That is, the language is exploited for pre-existing associations. However, in contrast with French (often associated with prestige) and German (often associated with technical precision), Afrikaans is used to invoke cultural stereotypes, notably a self-satirical celebration of Afrikaner backwardness and/or lack of refinement that is often interpolated with hyper-masculinity.

References


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