Sanjaya, Rebeca E., Tedjo, Yanuar Y., Kurniawan, Alfin, Yi-Hsu, Ju, Ayucitra, Aning and Ismadji, Suryadi (2014) Investigation on supercritical CO2 extraction of phenolic-phytochemicals from an epiphytic plant tuber (Myrmecodia pendans). Journal of CO2 Utilization, 6. pp. 26-33. ISSN 2212-9820
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Abstract
Myrmecodia pendans (ant-nest) is an epiphytic plant with rich content of phytochemicals. In this work, the application of supercritical carbon dioxide (SC-CO2) for extracting several polyphenol and flavonoid compounds from ant-nest tuber include gallic acid, catechin, ferulic acid, caffeic acid, p-coumaric acid, quercetin, luteolin and kaempferol was investigated. Static-analytical extraction experiments were performed at pressures ranged between 9–22.5 MPa and temperatures of 313.15–343.15 K for 6–7h. Solubility data of total polyphenols (gram gallic acid equivalent (GAE)/L CO2) and total flavonoids (gram quercetin Equivalent (QE)/L CO2) were modeled using Chrastil and Del Valle–Aguilera density-based equations. Both equations were able to represent actual solubilities satisfactorily in terms of correlation coefficient and parameter consistency. DPPH-scavenging test showed high antioxidant capacity of supercritical extract With an IC50 level of 3.62 ±0.12 mg/mL. It was observed a positive linear correlation between bioactive contents of antioxidant extract and the potency of scavenger activity against DPPH free radical.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Ant-nest, supercritical extraction, antioxidant, solubility, DPPH scavenging |
| Subjects: | Engineering > Chemical Engineering |
| Divisions: | Journal Publication |
| Depositing User: | Suryadi. Ismadji |
| Date Deposited: | 13 Jul 2016 08:06 |
| Last Modified: | 19 Jul 2018 07:55 |
| URI: | https://repository.ukwms.ac.id/id/eprint/4194 |
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