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      Green Synthesis of Metallic Nanoparticles Using Some Selected Medicinal Plants from Southern Africa and Their Biological Applications.

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          Abstract

          The application of metallic nanoparticles (MNPs), especially that of silver, gold, cobalt, and zinc as antimicrobial, anticancer, drug delivery, contrast, and bioimaging agents has transformed the field of medicine. Their functions, which are attributed to their physicochemical properties, have gained prominence in various technological fields. Although MNPs can be produced via rigorous physical and chemical techniques, in recent years, a biological approach utilizing natural materials has been developed. With the increasing enthusiasm for safe and efficient nanomaterials, the biological method incorporating microorganisms and plants is preferred over physical and chemical methods of nanoparticle synthesis. Of these bio-entities, plants have received great attention owing to their capability to reduce and stabilize MNPs in a single one-pot protocol. South Africa is home to ~10% of the world's plant species, making it a major contributor to the world's ecological scenery. Despite the documented contribution of South African plants, particularly in herbal medicine, very few of these plants have been explored for the synthesis of the noble MNPs. This paper provides a review of some important South African medicinal plants that have been utilized for the synthesis of MNPs. The enhanced biological properties of the biogenic MNPs attest to their relevance in medicine. In this endeavour, more of the African plant biodiversity must be explored for the synthesis of MNPs and be validated for their potential to be translated into future nanomedicine.

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          Author and article information

          Journal
          Plants (Basel)
          Plants (Basel, Switzerland)
          MDPI AG
          2223-7747
          2223-7747
          Sep 16 2021
          : 10
          : 9
          Affiliations
          [1 ] Oxidative Stress Research Centre, Phytomedicine and Phytochemistry Group, Department of Biomedical Sciences, Cape Peninsula University of Technology, Bellville 7535, South Africa.
          [2 ] Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre, Biolabels Node, Department of Biotechnology, University of the Western Cape, Bellville 7530, South Africa.
          Article
          plants10091929
          10.3390/plants10091929
          8472917
          34579460
          7f843e75-79fa-44a7-b288-a42046d454d8
          History

          green nanotechnology,green synthesis,medicinal plants,metallic nanoparticles,antimicrobial,cytotoxicity

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