LC-QTOF-MS analysis of xanthone content in different parts of Garcinia mangostana and its influence on cholinesterase inhibition

Kooi Yeong Khaw, Chun Wie Chong, Vikneswaran Murugaiyah

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Abstract

Mangosteen is one of the best tasting tropical fruit widely cultivated in Southeast Asia. This study aimed to quantify xanthone content in different parts of Garcinia mangostana by LC-QTOF-MS and determine its influence on their cholinesterase inhibitory activities. The total xanthone content in G. mangostana was in the following order: pericarp > calyx > bark > stalk > stem > leaves > aril. The total xanthone content of pericarp was 100 times higher than the aril. Methanol extracts of the pericarp and calyx demonstrated the most potent inhibitory activities against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) with IC50 values of 0.90 and 0.37 µg/mL, respectively. Statistical analysis showed a strong correlation between xanthone content and cholinesterase inhibition. Nonmetric multidimensional scaling analysis revealed α-mangostin and γ-mangostin of pericarp as the key metabolites contributing to cholinesterase inhibition. Due to the increasing demand of mangosteen products, repurposing of fruit waste (pericarp) has great potential for enhancement of the cognitive health of human beings.

Original languageEnglish
Pages (from-to)1433-1441
Number of pages9
JournalJournal of Enzyme Inhibition and Medicinal Chemistry
Volume35
Issue number1
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • cholinesterase inhibition
  • Garcinia mangostana
  • LC-QTOF-MS
  • xanthone
  • α-Mangostin
  • γ-mangostin

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