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| Content Provider | PubMed Central |
|---|---|
| Author | Mohiuddin, M. Arbain, D. Islam, A. K. M. Shafiqul Ahmad, M. S. Ahmad, M. N. |
| Abstract | A biosensor for measuring the antidiabetic potential of medicinal plants was developed by covalent immobilization of α-glucosidase (AG) enzyme onto amine-functionalized multi-walled carbon nanotubes (MWCNTs-NH2). The immobilized enzyme was entrapped in freeze-thawed polyvinyl alcohol (PVA) together with p-nitrophenyl-α-d-glucopyranoside (PNPG) on the screen-printed carbon electrode at low pH to prevent the premature reaction between PNPG and AG enzyme. The enzymatic reaction within the biosensor is inhibited by bioactive compounds in the medicinal plant extracts. The capability of medicinal plants to inhibit the AG enzyme on the electrode correlates to the potential of the medicinal plants to inhibit the production of glucose from the carbohydrate in the human body. Thus, the inhibition indicates the antidiabetic potential of the medicinal plants. The performance of the biosensor was evaluated to measure the antidiabetic potential of three medicinal plants such as Tebengau (Ehretis laevis), Cemumar (Micromelum pubescens), and Kedondong (Spondias dulcis) and acarbose (commercial antidiabetic drug) via cyclic voltammetry, amperometry, and spectrophotometry. The cyclic voltammetry (CV) response for the inhibition of the AG enzyme activity by Tebengau plant extracts showed a linear relation in the range from 0.423–8.29 μA, and the inhibition detection limit was 0.253 μA. The biosensor exhibited good sensitivity (0.422 μA/mg Tebengau plant extracts) and rapid response (22 s). The biosensor retains approximately 82.16 % of its initial activity even after 30 days of storage at 4 °C. |
| Related Links | http://dx.doi.org/10.1186/s11671-016-1292-1 |
| Starting Page | 95 |
| File Format | |
| ISSN | 19317573 |
| e-ISSN | 1556276X |
| Journal | Nanoscale Research Letters |
| Volume Number | 11 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-12-01 |
| Access Restriction | Open |
| Rights Holder | Springer US |
| Subject Keyword | Materials Science(all) Condensed Matter Physics Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Condensed Matter Physics |
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