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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

It takes a village to raise a child
2016-06-13

Description: Valentino_Student Bursary Fund Campaign Tags: Valentino_Student Bursary Fund Campaign

Valentino Ndaba
Photo: Sonia Small

(Click on CC for subtitles)

Video
Student Bursary Fund Campaign booklet (pdf)
Donate
Student Bursary Fund Campaign launched: #FundAFuture and make a difference
Motho ke motho ka batho. A person is a person through others

Want to make a difference in the world? Here is how

South Africa has one of the most spectacular coastlines in the world. Take the ribbon of golden beaches sweeping along the shores of KwaZulu-Natal, for instance. But just beyond the kiteboards dappling the ocean and fields of swaying sugarcane lies one of the largest informal settlements in the province: Amaoti. A place where barefoot children are skipping alongside poverty, and violent crime incinerates hope.

Nonetheless, that place could not keep Valentino Ndaba from graduating at the University of the Free State (UFS), and setting her sails for post-graduate studies.

A village
It takes a village to raise a child. This African proverb ripples across Valentino’s life story. “My gran always used to say education is your eternal bread. She still says it to this day. She has always instilled in me the importance of education,” Valentino smiles. Her grandmother has been but one of several champions in Valentino’s life.

Maalthee Dayaram – a teacher at Brookdale Secondary School that Valentino attended – noticed a budding talent in the young girl’s writing. With dedicated attention and ceaseless encouragement, Mrs Dayaram helped pave the way for this young writer. “You might be talented and have potential, but having someone actually believe in you and tell you that you have potential makes such a difference,” Valentino says. “I fell in love with writing, and had an idea that writing might be my future.” Dire economic circumstances threatened to snuff out any sparks of hope from that fragile future, though.

Aided by Lungisani Indlela (a non-profit organisation that provides children in the Amaoti area with school fees, uniforms, shoes, etc), Valentino clung to faith in the power of education. With unwavering single-mindedness, she consistently earned top grades.

Description: Valentino Ndaba 2 Tags: Valentino Ndaba 2

Photo: Sonia Small

Not if, but when
“Dreaming of my future, my gran would always say to me, ‘when you go to university’ or ‘when you have graduated’, this and that will follow.” Her gran’s words proved to be prophetic. As the final matric results were published in early January 2012, Valentino received a phone call that would change her life irrevocably.

That call came from the well-known South African humanitarian, Tich Smith. “Would you be willing to go to university in another province?” Smith asked. Never having travelled beyond her immediate surroundings, Valentino’s brave answer was: “Yes.”

A few days later, she walked onto the Bloemfontein Campus of the UFS.

Changing futures

Valentino proceeded to obtain a BA degree in Media Studies and Journalism in 2014. She has now set her sights on an honours degree, and envisions pursuing a Master’s degree in creative writing overseas.

“Without the support I received, I would have been stuck without a future,” she says. “University has shaped me into a better version of myself. I’ve grown intellectually, spiritually, and emotionally.”

You can bring about the same change for other students in need. By contributing to the UFS Student Bursary Fund Campaign, you can change the future not only of individuals, but of communities and of our country as well.

The impact of your financial support reaches far beyond its monetary value. It pulls families from poverty. It sends forth experts and visionaries into the world. It sets in motion a culture of giving.

Visit our Giving page for ways to contribute.

 

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