1. School of Pharmacy, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
2. Department of Science and Innovation/Mintek Nanotechnology Innovation Centre (DST/Mintek NIC), Bio-Labels Node, Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
3. Department of Environmental Affairs (Oceans and Coasts), Cape Town 8000, South Africa
4. Department of Biodiversity and Conservation Biology, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
5. Department of Biological Sciences, University of Cape Town, Rondebosch 7701, South Africa
6. Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa