Selective Entrapment of Pb2+ from Fresh Thunbergia laurifolia Leaves Extract and Thunbergia laurifolia Tea Extract
| Autor: | Natchawat Faichu, Nantanit Wanichacheva, Anuwut Petdum, Witawas Handee, Soontorn Suvokhiaw, Pattanawit Swanglap, Nichanan Thepsuparungsikul, N. Chimpalee |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
biology Chemistry DPPH Metal ions in aqueous solution natural and aqueous-based Thunbergia laurifolia extracts Saponin General Chemistry biology.organism_classification law.invention Thunbergia laurifolia chemistry.chemical_compound Pb2+-selectivity Phytochemical law Tannin Chelation Atomic absorption spectroscopy Pb2+-screening Nuclear chemistry |
| Zdroj: | Journal of the Brazilian Chemical Society, Volume: 31, Issue: 3, Pages: 498-504, Published: 02 MAR 2020 Journal of the Brazilian Chemical Society v.31 n.3 2020 Journal of the Brazilian Chemical Society Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| Popis: | The leaves of Thunbergia laurifolia and its tea were extracted by water. The abilities to chelate heavy metal ions of the extracts were studied by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and atomic absorption spectroscopy (AAS). The results showed that the extracts exhibited high selectivity for Pb2+ chelation via a favourable-selective precipitation to Pb2+ in aqueous solutions compared to other metal ions, such as Zn2+, Cu2+ and Fe3+. The Pb2+ removal capability of the extracts were 51-52%. The selective Pb2+-trapping process of the extracts of Thunbergia laurifolia could be attributed to predominant presence of the phytochemical compounds, tannin and saponin, in the Thunbergia laurifolia leave and tea. Moreover, Thunbergia laurifolia tea also exhibited antioxidant property as demonstrating by the 2,2-diphenyl-1-picryl-hydrazyl (DPPH) free radical method. |
| Databáze: | OpenAIRE |
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