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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

UFS Rose Ball promises to be an unforgettable experience

2005-09-08

On Saturday 15 of October 2005, the Department of Paediatrics and Child Health at the University of the Free State (UFS) in collaboration with Medi-Clinic, are hosting a Rose Ball in aid of children and babies with serious diseases and special needs.

The Bloemfontein public should get ready for one of the most magnificent events ever held in the city.

The Rose Ball promises to offer an evening of glamour, elegance and beauty which will make it an unforgettable and unique event. The Department aims to make the Rose Ball an annual event to which the Bloemfontein public can look forward to with expectation.

“Excellent food and wine, a 35 man symphony orchestra and of course a magical setting awaits those who attend the Rose Ball. We will do everything possible to make guests feel special, so that they return to the Rose Ball year after year. In this way, we can ensure an annual income from this event for children and babies who are very ill and need specialised care,” said Prof. André Venter, Head of the Department of Paediatrics and Child Health.

The Department of Paediatrics and Child Health at the UFS is responsible for the tertiary care, that is highly specialised care, of around 1 000 000 children in the Free State, Northern Cape, North-West, Eastern Cape and Lesotho. Approximately 13 000 out-patients are treated at the Universitas and Pelonomi Hospitals annually. Children who suffer from cancer, heart disease, neurological disease and endocrinological and gastro-enterological conditions are treated. The Department is also responsible for children who need intensive care and children with contagious diseases. In addition, there is a large neonatal unit where prematurely born babies are treated.

The level of health care needed to treat these children and babies, necessitate highly specialised equipment and knowledge. However, it is not always possible to replace or upgrade equipment, due to the lack of much-needed funds. That is why a fund was created within the Department to satisfy the need for funds. The Rose Ball promises to eventually give a vital boost to the fund that will go a long way toward providing in the special healthcare needs of these patients.

The Rose Ball is made possible thanks to the support of Medi-Clinic.

“Medi-Clinic is honoured to be involved in this great effort and in this way take hands with the Department of Paediatrics and Child Health at the UFS. There are so many children with life-threatening diseases today and we cannot afford to be uninvolved in any effort to make life better and easier for these children. We at Medi-Clinic, as a private sector company, look forward to establishing a long-term commitment with the Department of Paediatrics and Child Health,” said Mr Sakkie van der Merwe, Hospital Manager of Bloemfontein Medi-Clinic.

Only a limited number of tables are still available for the Rose Ball. Tickets cost R500 per person or R5 000 per table of 10 people.

Those who are interested can contact Ms Ilse Olivier at 051-4012415 or Ms Adele van Aswegen at 051-4013535 for more information.

Media release
Issued by:  Lacea Loader
   Media Representative
   Tel: (051) 401-2584
   Cell: 083 645 2454
   E-mail: loaderl.stg@mail.uovs.ac.za
8 September 2005

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