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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:



News Archive

UFS provides an alternative route to a BEng degree
2014-06-04

Mr Louis Lagrange
Photo: Leonie Bolleurs

The university is very excited about the establishment of a new study field at Kovsies – a BSc degree with majors in Physics and Engineering subjects. The course is presented in the Faculty of Natural and Agricultural Sciences on the Bloemfontein Campus.

Project EnSci was established at the UFS at the beginning of 2014. Twelve first-years and four second-years enrolled for the course this year.

“We replace the non-core Physics subjects with Engineering subjects. We also present all specialist Engineering subjects ourselves,” says Louis Lagrange, project manager of Projec EnSci – Engineering Science.

“There isn’t enough space at universities in South Africa to accommodate all students who are interested in engineering. The UFS course can thus be considered a fundamental engineering course. It equips a student in such a way that they will be able to specialise in various disciplines,” he says.

After completion of the three-year BSc degree at the UFS, students may choose to:

• graduate with a BSc degree majoring in Physics and Engineering subjects and enter the professional world.
• study further for an honours, master’s or doctoral degree in Physics.
• apply to register for a second degree – BEng or BScEng (for two additional years) at another university recognising the BSc degree with majors in Physics and Engineering Science. Acceptance is subject to certain requirements.

Matriculants interested in this field, must follow the application procedure of the UFS before 30 September 2014 and achieve the following in the final NSC or equivalent examination:

• an AP score of 34 or more is strongly recommended,
• cumulative AP score of 13 or more in Mathematics and Physical Science,
• completion of NBT tests and
• language of instruction – 4 or more.

These prospective students also need to complete and submit an application form. For more information contact us at engineeringsubjects@ufs.ac.za


 

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