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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

Dr Makutoane to present research on world stage in US
2017-06-14

“If the SBL has acknowledged you,
it means the research you are doing
is solid. There are people out there
who want to listen to my paper.”

To present a research paper at an international conference of about 10 000 people and where 100 sessions are taking place at the same time is what dreams are made of for an academic. This is no longer a dream for the humble Dr Tshokolo Makutoane who will share his knowledge at the annual meeting of the prestigious Society of Biblical Literature (SBL).

Dr Makutoane, a senior lecturer at the Department of Hebrew at the University of the Free State (UFS), will be a speaker at the conference in Boston, in the US, from 19-21 November 2017. This after receiving a remarkable travel grant from the SBL to present his paper, titled The Contribution of Linguistic Typology for the Study of Biblical Hebrew in Africa: The Case of Sesotho Pronouns.

Description: Dr Makutoane to present research on world stage in US Tags: Dr Makutoane to present research on world stage in US

Dr Makutoane, senior lecturer at the Department of
Hebrew at the University of the Free State, was
speechless when he heard he will be presenting a
paper at the annual meeting of the Society of Biblical
Literature in Boston in the US.
Photo: Jóhann Thormählen

Scholars from around the world participate
His paper is part of a thematic session on “Theoretical Approaches to Anaphora and Pronouns in Biblical Hebrew” in which scholars from Canada, the US, Australia, Europe and Israel will participate.

The research Dr Makutoane will be showcasing in Boston is about teaching Biblical Hebrew in Africa, and more specifically, pronouns, to Sesotho-speaking students.

“SBL is one of the largest organisations in the world and if you get the opportunity to present a paper there, it is one of the highest honours in our context you can have,” Dr Makutoane said.

“If the SBL has acknowledged you, it means the research you are doing is solid. There are people out there who want to listen to my paper.”

According to the SBL website (https://www.sbl-site.org) more than 1 200 academic sessions and workshops will take place at the conference, co-hosted by the SBL and the American Academy of Religion.

Highlight of researcher’s entire career
Receiving the grant and attending the conference for the first time is the highlight of Dr Makutoane’s career. “I feel very grateful, honoured and humbled. I was speechless when I heard about it. I couldn’t help myself and actually cried,” he said.

The grant, given to only four SBL members – the other three are from Samoa, Nigeria and India – is intended to support under-represented and under-resourced scholars who demonstrate a financial need.

Dr Makutoane thanked his mentors, Prof Jacobus Naudé and Prof Cynthia Miller-Naudé, who assisted him with the application. Naudé is a senior professor at the Department of Hebrew and Miller-Naudé a senior professor and head of the department.

Dr Makutoane, who studied Theology at the UFS and is a minister at the NGKA Rehauhetswe church near Bloemfontein, is also grateful to his church that gave him the opportunity to study at the UFS and be able to work at the university.

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