Investigation on supercritical CO2 extraction of phenolicphytochemicals from an epiphytic plant tuber (Myrmecodia pendans)

Sanjaya, Rebeca E., Tedjo, Yanuar Yumanto, Kurniawan, Alfin, Ju, Yi-Hsu, Ayucitra, Aning and Ismadji, Suryadi (2014) Investigation on supercritical CO2 extraction of phenolicphytochemicals from an epiphytic plant tuber (Myrmecodia pendans). Investigation on supercritical CO2 extraction of phenolicphytochemicals from an epiphytic plant tuber (Myrmecodia pendans), 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 6–7 h. 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:	F.X. Hadi
Date Deposited:	22 Nov 2023 07:43
Last Modified:	23 Jan 2024 09:35
URI:	http://repository.ukwms.ac.id/id/eprint/37406

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