Aug 2021 1st edition

Making products from indigenous plants

Written by Kgaogelo Letsebe

The Council for Scientific and Industrial Research (CSIR) is researching indigenous plants to develop sustainable food products, herbal-based medicines and cosmetic alternatives in South Africa. Cancer bush is one of the indigenous plants from which products are being developed.

Trishen Reddy and Lucia Sethunya, who are both junior researchers and process technologists at the CSIR, are part of the Indigenous Knowledge Systems Research Programme (IKS) that helps communities, producers and traditional healers produce safe, quality products.

The team works with plants found in Southern African countries, such as Namibia, Lesotho, Botswana and South Africa.

The researchers used Aloe ferox (Cape Aloe) to produce gels and cosmetic lotions, Hoodia gordonii (Bushman’s hat) to produce an appetite suppressant and Lippia javanica (umsuzwane) to produce a mosquito repellent.

The Traditional Healers’ Committee approached the CSIR with indigenous knowledge of umsuzwane, which inspired the research.

“The CSIR developed a technique to extract and enhance the compounds found in the plant on a commercial scale, and it is available on the market,” says Reddy.

She adds that the CSIR identified a novel chemical compound that repels mosquitos and filed for a patent in South Africa.

It also entered into a benefit sharing agreement with the Traditional Healers’ Committee and applied for a bio-prospecting permit to commercialise the technology.

Other plants that have been researched are Siphonochilus aethiopicus (African ginger) and Sutherlandia frutescens (cancer bush), which were produced as teas to use in traditional medicine to treat colds and flu.

Reddy says the team helps local communities to sustainably farm and process the plants.

“The team invites stakeholders to see what equipment is needed and how to use it, to ensure the products are produced to the same quality and safety standards.

“We also train communities and stakeholders to use equipment to develop plant-based products, leading to transferable technologies and skills creation.”

Sethunya adds that the team made a jelly using Aloe castanea (sekgopha or cat’s tail Aloe) that is used in skin remedies to moisturise and protect the skin.

They also developed a tissue oil from Moringa oleifera (tree of life) that has antimicrobial and antioxidant properties and is used to smoothen, soften and moisturise skin.

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