Optimization of Xanthone Extraction from Mangosteen Garcinia mangostana L. Rinds using Pulsed Electric Field Method
Jaya Mahar Maligan, Imelda Kartika Mulyono

Agricultural Product Technology Department, Agricultural Technology Faculty
Brawijaya University - Malang

Abstract

Mangosteen or Garcinia mangostana L. is fruit plant that growth in tropical forest Southeast Asia. The mangosteen rinds contains beneficial compounds such as xanthon, antocyanin, phenolic and tannin. Bioactive components can be separated using PEF (Pulsed Electric Field) extraction method. PEF utilizes high voltage electric with a short extraction time, make the extraction process more efficient. The aim of the research was to know the optimal condition of solid to solvent ratio 1:10, 1:14, 1:18 g/ml and extraction time 60,70, 80 second for xanthone levels and extraction yield. The experiment is designed by using response surface method (Central Composite Design). The result of research showed that the combination solid to solvent ratio (w/v) 1:15.95 g/ml and extraction time 69.99 second got the best xanthone level 39,94 mg/g and yield extraction 24,12 %. Antioxidant activity (IC50), anthocyanin, and phenolic compound of mangosteen rind extract in sequence is 32.79 ppm, 84.61 mg/100g, 141.05 mgGAE/g.

Keywords: Mangosteen rinds, extraction, PEF, RSM

Topic: AGRICULTURAL PRODUCT TECHNOLOGY