Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
04 January 2021 | Story Andre Damons | Photo Supplied
From left to right: Makashane Ntlhabo (PhD student at the Centre for Gender and Africa Studies), Dr Tascha Vos (Centre for Environmental Management) and Dr Stephanie Cawood (Centre for Gender and Africa Studies).

Two researchers from the University of the Free State (UFS) are studying how water quality could be used at informal heritage sites to measure the health of the sites. They are also aiming to test the workability of their Rapid Integrity Appraisal (RIA) bio-cultural screening model as a way to safeguard informal heritage sites and cultural heritage.

Dr Stephanie Cawood from the Centre for Gender and Africa Studies and Dr Tascha Vos from the Centre for Environmental Management,a limnologist with a doctorate in environmental management, hope to achieve wider application for the RIA model beyond the eastern Free State’s sacred sites and to consider the feasibility of RIA to inform the monitoring and management regimes of formal heritage sites as well.

This interdisciplinary research is unique and brings together the science of aquatic ecology (limnology) as well as the cultural and social human dynamics of heritage, pilgrimage and ritual and how they interact.

Sacred sites and places of pilgrimage

“In previous research, we documented a link between the environmental integrity and public health of informal heritage sites in the eastern Free State and the cultural heritage associated with these sites. They are considered sacred sites and places of pilgrimage and include various sacred valleys and caves in the Mohokare Valley in the eastern Free State along the South Africa-Lesotho border.

“We detected a cycle of risk between human, animal and ecological risk factors where water quality is representative of ecological risk and cultural practices associated with the intrinsic heritage of the sites. Based on this cycle of risk and conventional aquatic biomonitoring models, we developed a unique bio-cultural screening model called Rapid Integrity Appraisal specifically designed for the biomonitoring of informal heritage sites such as the eastern Free State sacred sites,” the two researchers explain.

Rapid Integrity Appraisal

According to Dr Cawood, who is very knowledgeable about pilgrimage movement in the Mohokare Valley and has conducted regular fieldwork trips to these sites from 2007-2010, RIA is a bio-cultural screening model to determine the need for intervention at informal heritage sites.

Says Dr Cawood: “Ideally, a complete bio-cultural screening model would include all existing bio-monitoring indices. However, in a country such as South Africa which has immense social challenges, the formal heritage sector is under-resourced. Resources are even scarcer for informal heritage management.”

Dr Vos says this means that the full spectrum of biomonitoring indices simply cannot be justified for informal heritage sites. Therefore, in the specific context of limited resources in terms of time, expertise and funding, a pragmatic view has to be taken to rapidly and efficiently assess the integrity of informal sites.

“We found certain analyses related to water quality more valuable for extrapolation than others and we conceptualised these parameters as forming the RIA model. The idea behind RIA was to find the most expedient and efficient mode to rapidly assess the integrity of a particular informal heritage site. RIA is not meant to be a comprehensive method but is rather aimed at collecting baseline data for immediate decision-making and the possible implementation of a full water-quality assessment, or perhaps a complete bio-cultural screening,” according to Dr Vos.

Great potential

They have recently been funded by the UFS for this interesting interdisciplinary project which started in 2018. They have already completed the fieldwork and are now left with the data analysis and interpretation and the writing of articles. Unfortunately, the coronavirus pandemic negatively affected their progress in this regard, but they hope to finalise the project next year.

According to the researchers the project has great potential for application in heritage management anywhere, not only for the monitoring of informal heritage sites, but for poorly managed tourist sites that may be ecologically compromised.

News Archive

UFS researchers are producing various flavour and fragrance compounds
2015-05-27

 

The minty-fresh smell after brushing your teeth, the buttery flavour on your popcorn and your vanilla-scented candles - these are mostly flavour and fragrance compounds produced synthetically in a laboratory and the result of many decades of research.

This research, in the end, is what will be important to reproduce these fragrances synthetically for use in the food and cosmetic industries.

Prof Martie Smit, Academic Head of the Department of Microbial, Biochemical and Food Biotechnology at the UFS, and her colleague Dr Dirk Opperman, currently have a team of postgraduate students working on the production of various flavour and fragrance compounds from cheap and abundantly available natural raw materials. 

Prof Smit explains that most of the flavours and fragrances that we smell every day, originally come from natural compounds produced mainly by plants.

“However, because these compounds are often produced in very low concentrations by plants, many of these compounds are today replaced with synthetically-manufactured versions. In recent times, there is an increasing negative view among consumers of such synthetic flavour and fragrance compounds.”

On the other hand, aroma chemicals produced by biotechnological methods, are defined as natural according to European Union and Food and Drug Administration (USA) legal definitions, provided that the raw materials used are of natural origin.  Additionally, the environmental impact and carbon footprint associated with biotech-produced aroma chemicals are often also smaller than those associated with synthetically-produced compounds or those extracted by traditional methods from agricultural sources.

During the last four years, the team investigated processes for rose fragrance, vanilla flavour, mint and spearmint flavours, as well as butter flavour. They are greatly encouraged by the fact that one of these processes is currently being commercialised by a small South African natural aroma chemicals company. Their research is funded by the Department of Science and Technology and the National Research Foundation through the South African Biocatalysis Initiative, the DST-NRF Centre of Excellence in Catalysis and the Technology Innovation Agency, while the UFS has also made a significant investment in this research.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept