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UFS busy with exciting research into flavours and fragrances

11 July 2022 | Story Andre Damons | Photo Supplied

Prof Martie Smith and Prof Drik Opperman — Prof Martie Smit and Prof Dirk Opperman in the Department of Microbiology and Biochemistry filed a patent entitled “Process for the chemical modification of alkanes, fatty acids and fatty alcohols”.

Flavours and fragrances have a wide application in the food, feed, cosmetic, chemical and pharmaceutical sectors. Many flavour compounds are still produced via chemical synthesis or via extraction from plant or animal sources. However, there is increasing interest in their bio-production or the use of flavour compounds of (micro) biological origin.

One reason for this shift is that chemical synthesis often uses environmentally unfriendly processes. Chemical synthesis usually also produces racemic mixtures with the second enantiomer, mirror image of the looked-for compound, often having undesirable organoleptic properties. Furthermore, the consumer has developed a “chemophobia”-attitude towards synthetic chemical compounds, especially when related to food and home-care products. This applies even to nature-identical compounds – products that occur in nature but are produced via a non-natural chemical process. Products produced with the use of enzymes or microbes from “natural” substrates can be labelled “natural”. The flavour and fragrance industry thus pay higher prices for such products labelled as “natural”.

The invention

A University of the Free State (UFS) team, led by Prof Martie Smit and Prof Dirk Opperman in the Department of Microbiology and Biochemistry are conducting exciting research in this area. They filed a patent entitled “Process for the chemical modification of alkanes, fatty acids and fatty alcohols”.

The invention relates to a process for the enzymatic in-chain hydroxylation of C12 to C16 fatty acids, alcohols, and alkanes. Hydroxylation of C12 fatty acid and alcohol provides routes for the synthesis of “natural” δ-dodecalactone. The advantage of these routes is that they do not rely on massoia lactones. Massoia lactones are derived from the bark of Massoia trees which grow in Indonesia. Harvesting of the bark kills the trees.

The cytochrome P450 enzymes (P450s) claimed in this patent are to the inventors’ knowledge the most regioselective enzymes described thus far that can be used for the synthesis of δ-dodecalactone from lauric acid or 1-dodecanol. The approach that the technology takes is to claim cytochrome P450 enzymes that share 70 % amino acid identity to a set of selected P450s for the regioselective hydroxylation of lauric acid and 1-dodecanol to synthesise δ-dodecalactone.

Still in early stage

The current state of development is early stage with the technology only demonstrated in the laboratory on a small scale (100-200 ml). Before the technology can be commercialised the team would need to further improve the regioselectivity and stability of the P450s and proof that the reactions can be scaled up in bioreactors. The technology will probably be delivered as an enzyme (amino acid sequence) with the desired properties.

There are other research groups working on a synthetic biology approach for the de novo synthesis of δ-dodecalactone from glucose by genetically engineered microbes. It is still unclear how such a process will compare in terms of product yields, economics and environmental impact with the processes proposed by the UFS patent.

If the team had to partner with a commercial company, their first choice would be to work with an established flavour and fragrance company. Another possibility would be the small French flavour and fragrance company that Dr Alizé Pennec, the post-doc and co-inventor who initially discovered the unique P450 activity, is working for.

Please view the videos for more information on patents.

The Vice-Rector: Research and Internationalisation has released two new calls for applications for funding. Academic staff and researchers are encouraged to submit applications for these funds. At this stage we are not accepting projects from Research Fellows.

The two funds are:

1. The Industrial Engagement Fund

2. The Intellectual Property Commercialisation Fund

Each fund has its own guidelines and application process. The guidelines are attached. The applications must be filled in on RIMS.

The RIMS application forms can be found through this link

For more information please click the documents below:

IP Commercialisation Fund Concept Note

The UFS Industry Engagement Fund Concept Note

News Archive

New Genetics building on Bloemfontein Campus spirals into new frontiers

2015-09-11

On Thursday 3 September 2015, the Department of Genetics hosted the official opening of its new offices on the Bloemfontein Campus of the University of the Free State (UFS).

Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS, Prof Neil Heideman, Dean of the Faculty of Natural and Agricultural Sciences, and Prof Paul Grobler, Head of the Department of Genetics cut the ribbon, symbolising the opening of this building with its state-of-the-art facilities.

The new genetics building boasts a new administration block with a reception area, seven offices, a small committee room, and a seminar room for 50 people. Furthermore, the undergraduate laboratory block provides a laboratory for 150 students. The research block has facilities for 30 researchers.

This building also hosts a chemical waste sorting and storage facility. This is a first for the university.

Several sites were investigated for the new building, but due to its size and envisaged second phase, a “green fields” site was found on the western side of the campus. The main entrance caters for visitors from the north, students on foot, and those using the parking area in front of the library. The secondary south entrance is for those who use the dedicated parking area south of the building. The link between these two entrances is the spine of the building, a helix with services/buildings spaced on either side. The helix will be extended in the second phase to keep the circulation and linkage of buildings as simple as possible.

In his opening speech, Prof Grobler gave a breakdown of the history of the Department of Genetics. Today, this department, which opened its doors at the UFS in 1960, is proud of its 131 students and 46 honours students.

According to Major-General Edward Ngokha, Head of the Forensic Science Laboratory, students who graduate from the UFS in the field of genetics make excellent employees. The Forensic Science Laboratory has employed 25 honours students since the BSc Honours degree in Genetics was implemented in 2010.

“The UFS delivers education of high quality and high standards. Thank you for your contribution toward fighting crime by delivering well-prepared, committed employees,” said Major-General Ngokha.

The department presents programmes on population conservation genetics, plant molecular genetics, cytogenetics, forensic genetics, forensic science, human genetics, and behavioural genetics.

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