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Abstract
This paper presents the influence of solvent polarity and extraction conditions on the extraction of total flavonoid, total phenolic and antioxidants from Averrhoa bilimbi. The experiment was performed using a different solvent at different extraction conditions, including extraction time (15-240 min), temperature (30-70 °C) and agitation speed (50-300 rpm). Results showed that yields of extraction varies with solvent polarity. Extraction using 50% aqueous methanol gives the highest antioxidant activity and flavonoid content. The highest total flavonoid content (193.3 µg quercetin equivalent/g dry weight), total phenolic content (717.8 µg gallic acid equivalent/g dry weight) and antioxidant activity (77%) was achieved using 50% methanol, at 70 °C and agitation speed of 300 rpm. This work may be useful for obtaining higher bioactive compounds during the extraction process of A. bilimbi.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Extraction, flavonoid, belimbing buluh, phenolic, antioxidant. |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow Faculty of Chemical & Natural Resources Engineering Faculty of Industrial Sciences And Technology |
| Depositing User: | Prof. Dr. Jolius Gimbun |
| Date Deposited: | 28 Jan 2016 08:17 |
| Last Modified: | 27 Jul 2018 08:16 |
| URI: | http://umpir.ump.edu.my/id/eprint/11828 |
| Download Statistic: | View Download Statistics |
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