Role of virgin coconut oil (VCO) as co-extractant for obtaining xanthones from mangosteen (Garcinia mangostana) pericarp with supercritical carbon dioxide extraction

Siew Lee Kok, Wan Jun Lee, Richard Lee Smith, Norhidayah Suleiman, Kriskamol Na Jom, Kanithaporn Vangnai, Amir Hamzah Bin Sharaai, Gun Hean Chong

Research output: Contribution to journalArticlepeer-review

Abstract

Virgin coconut oil (VCO) was used as co-extractant with supercritical carbon dioxide (scCO2) extraction for obtaining xanthones from mangosteen pericarp (MP) without organic co-solvents. In each experiment, 120 g of dried MP that had median particle sizes of 0.85 mm was used. Extraction of MP with 40% VCO co-extractant using scCO2 (1.08 kg/h) for 420 min at 430 bar and 70 °C gave α-mangostin (32.2 mg/g), γ-mangostin (7.2 mg/g), xanthones (28.2 mg/g) in extract and an extraction yield of 31%. The role of VCO is that it promotes dissolution of xanthones and mass transfer into the scCO2 phase as elucidated with the Pardo-Castaño model. The Lentz equation was generalized in terms of (P, T, %VCO, ρCO2) to correlate all extraction curve data to within 7.4% and to estimate extraction yield crossover regions. Xanthones can be separated from mangosteen pericarp with VCO and scCO2 extraction without organic co-solvents.

Original languageEnglish
Article number105305
JournalJournal of Supercritical Fluids
Volume176
DOIs
Publication statusPublished - 2021 Oct

Keywords

  • Bioactive compounds
  • Correlation
  • Crossover region
  • Separation
  • Vegetable oil co-solvent
  • α-mangostin

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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