Investigation on supercritical CO2 extraction of phenolic-phytochemicals from an epiphytic plant tuber (Myrmecodia pendans)

Sanjaya, Rebeca E. and Tedjo, Yanuar Y. and Kurniawan, Alfin and Yi-Hsu, Ju and 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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Official URL: http://www.sciencedirect.com/science/article/pii/S...

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: 22 Feb 2018 06:28
URI: http://repository.wima.ac.id/id/eprint/4194

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