Multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric
A sensitive electrochemical method for the determination and quantification of curcumin using adsorptive stripping voltammetry (AdsSV) at a multiwalled carbon nanotube modified basal plane pyrolytic graphite electrode (MWCNT-BPPG electrode) is presented exploiting the high surface area of the latter...
| Main Authors: | , , , |
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| Format: | Journal article |
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Wiley
2016
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| _version_ | 1826283759681404928 |
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| author | Chaisiwamongkhol, K Ngamchuea, K Batchelor-McAuley, C Compton, R |
| author_facet | Chaisiwamongkhol, K Ngamchuea, K Batchelor-McAuley, C Compton, R |
| author_sort | Chaisiwamongkhol, K |
| collection | OXFORD |
| description | A sensitive electrochemical method for the determination and quantification of curcumin using adsorptive stripping voltammetry (AdsSV) at a multiwalled carbon nanotube modified basal plane pyrolytic graphite electrode (MWCNT-BPPG electrode) is presented exploiting the high surface area of the latter. Next the voltammetric behaviour of curcumin on the modified electrode is examined and AdsSV shown to be a sensitive method for quantifying curcumin. The adsorption of curcumin on the electrode surface is evidenced to follow a Langmuir adsorption isotherm. Linear calibration for curcumin in the range of 2 – 100 µM was obtained with a detection limit of 0.45 µM and a limit of quantification of 1.49 µM. For application to real samples of turmeric, a one-step sample preparation in ethanol has developed providing a simple and rapid extraction procedure. The MWCNT-BPPG electrode with AdsSV allowed the determination of curcumin equivalent in turmeric powder sample with recoveries in the range of 92-108%. This facile and fast method will be useful for monitoring the quality of curcumin containing in commercial turmeric products. |
| first_indexed | 2024-03-07T01:03:44Z |
| format | Journal article |
| id | oxford-uuid:8a9b5523-14f9-451e-af2e-1d58b64b0339 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:03:44Z |
| publishDate | 2016 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:8a9b5523-14f9-451e-af2e-1d58b64b03392022-03-26T22:32:38ZMultiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmericJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8a9b5523-14f9-451e-af2e-1d58b64b0339Symplectic Elements at OxfordWiley2016Chaisiwamongkhol, KNgamchuea, KBatchelor-McAuley, CCompton, RA sensitive electrochemical method for the determination and quantification of curcumin using adsorptive stripping voltammetry (AdsSV) at a multiwalled carbon nanotube modified basal plane pyrolytic graphite electrode (MWCNT-BPPG electrode) is presented exploiting the high surface area of the latter. Next the voltammetric behaviour of curcumin on the modified electrode is examined and AdsSV shown to be a sensitive method for quantifying curcumin. The adsorption of curcumin on the electrode surface is evidenced to follow a Langmuir adsorption isotherm. Linear calibration for curcumin in the range of 2 – 100 µM was obtained with a detection limit of 0.45 µM and a limit of quantification of 1.49 µM. For application to real samples of turmeric, a one-step sample preparation in ethanol has developed providing a simple and rapid extraction procedure. The MWCNT-BPPG electrode with AdsSV allowed the determination of curcumin equivalent in turmeric powder sample with recoveries in the range of 92-108%. This facile and fast method will be useful for monitoring the quality of curcumin containing in commercial turmeric products. |
| spellingShingle | Chaisiwamongkhol, K Ngamchuea, K Batchelor-McAuley, C Compton, R Multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric |
| title | Multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric |
| title_full | Multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric |
| title_fullStr | Multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric |
| title_full_unstemmed | Multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric |
| title_short | Multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric |
| title_sort | multiwalled carbon nanotube modified electrodes for the adsorptive stripping voltammetric determination and quantification of curcumin in turmeric |
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