A. A., Azlim Almey and C., Ahmed Jalal Khan and I., Syed Zahir and K., Mustapha Suleiman and M. R., Aisyah and K., Kamarul Rahim (2010) Total phenolic content and primary antioxidant activity of methanolic and ethanolic extracts of aromatic plants’ leaves. International Food Research Journal, 17. pp. 1077-1084. ISSN 2231-7546
![[img]](http://eprints.uthm.edu.my/style/images/fileicons/text.png) |
Text
J6748_89f03bc09ea4a1c72ebb457f6a2f9e0d.pdf Restricted to Registered users only Download (655kB) | Request a copy |
Abstract
The aim of this study is to determine the total phenolic content and primary antioxidant activity of methanolic and ethanolic extracts of four aromatic plants’ leaves namely knotweed (Polygonum minus), curry (Murraya koenigii), kaffir lime (Citrus hysrix) and fragrant screwpine (Pandanus odurus). Total phenolic content (TPC) assay using Folin-Ciocalteu method was used to assess the presence and level of phenolic compounds in each sample. The present study showed that both methanolic and ethanolic extracts of P. minus had the highest TPC and followed by M. koenigii, C. hystrix and P. odorus. Primary antioxidant activity in terms of free radical scavenging activities of both methanolic and ethanolic extracts was then measured by 2, 2, diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity assay. The lowest EC50 values based on the DPPH. radical scavenging activity were shown by P. minus extracts as compared to the other samples. For both ethanolic and methanolic extracts, the correlations between TPC and EC50 based on the DPPH. radical scavenging activity assay were negative and weak. Relatively, the present results suggest that of the four aromatic plants, P. minus and M. koenigii have shown potential as sources of natural antioxidants.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Aromatic plants’ leaves; TPC; DPPH; radical scavenging activity; natural antioxidants; Polygonum minus; Murraya koenigii. |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Others Institution |
| Depositing User: | Mr. Abdul Rahim Mat Radzuan |
| Date Deposited: | 17 Oct 2022 06:19 |
| Last Modified: | 17 Oct 2022 06:19 |
| URI: | http://eprints.uthm.edu.my/id/eprint/7872 |
Actions (login required)
 |
View Item |