Betacyanins extraction from Hylocereus polyrhizus using alcohol/salt-based liquid biphasic partitioning system and antioxidant activity evaluation

Hui Yi Leong, Chien Wei Ooi, Chung Lim Law, Advina Lizah Julkifle, Pau Loke Show

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

Betacyanins have gained increasing interest as natural food dye because of their health-promoting effects. This study investigated the betacyanins extraction from peel and flesh of red–purple pitaya using ethanol/K 2 HPO 4 -based liquid biphasic partitioning system (LBPS) by optimised concentrations of ethanol, K 2 HPO 4 , NaCl and crude. Overall, the highest values of betacyanins concentration in alcohol-rich top phase (C t ), phase volume ratio (V r ) and partition coefficient (K) of betacyanins that represented an optimum betacyanins extraction from the peel (98.080%, 1.667 and 51.097, respectively) and flesh (96.256%, 2.167 and 25.764, respectively) were achieved. Lastly, conventional solvent extractions, colour characterisation and antioxidant activity evaluation were conducted.

Original languageEnglish
Pages (from-to)747-758
Number of pages12
JournalSeparation Science and Technology
Volume54
Issue number5
DOIs
Publication statusPublished - 24 Mar 2019

Keywords

  • Antioxidant activity
  • betacyanins
  • liquid biphasic partitioning system
  • red–purple pitaya

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