An NMR Metabolomics Approach and Detection of Ganoderma boninense-Infected Oil Palm Leaves Using MWCNT-Based Electrochemical Sensor
| Autor: | Rosiah Osman, Fowotade Sulayman Akanbi, Azizul Isha, Wong Mui-Yun, Siti Nor Akmar Abdullah, Nor Azah Yusof |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Materials science Article Subject 010401 analytical chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electrochemical gas sensor Chitosan chemistry.chemical_compound chemistry Colloidal gold Linear sweep voltammetry lcsh:Technology (General) Proton NMR lcsh:T1-995 General Materials Science Cyclic voltammetry 0210 nano-technology Carbon Nuclear chemistry |
| Zdroj: | Journal of Nanomaterials, Vol 2019 (2019) |
| ISSN: | 1687-4129 1687-4110 |
| Popis: | Ganoderma boninense (G. boninense) has been identified as a major problem in oil palm industry which caused basal stem rot disease. Identification of metabolite variation of healthy and G. boninense-infected oil palm leaves at 14 days postinfection using NMR metabolomics approach followed by characterization of an electrochemical sensor based on a functionalized multiwalled carbon nanotube (MWCNT) layer-by-layer framework on modified screen-printed carbon electrode has been successfully determined. Significant differences from the 1H NMR data were observed between healthy and G. boninense-infected oil palm leaves, according to principal component analysis. Gold nanoparticle-functionalized MWCNT and chitosan-functionalized MWCNT were deposited on a screen-printed carbon electrode and were applied for the electrochemical detection of healthy and G. boninense-infected oil palm leaves. The electrocatalytic activities of a modified electrode towards oxidation of healthy and G. boninense-infected oil palm leaves at a concentration of 100 mg/L were evaluated using cyclic voltammetry and linear sweep voltammetry. The limits of detection of healthy and G. boninense-infected oil palm leaves were calculated to 0.0765 mg/L and 0.0414 mg/L, respectively. The modified electrode shows a good sensitivity and reproducibility due to the unique characteristics of gold nanoparticles, chitosan, MWCNTs, and synergistic interaction between them. |
| Databáze: | OpenAIRE |
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