Phytochemical constituents and in vitro radical scavenging activity of different Aloe species

Luigi Lucini, Marco Pellizzoni, Gian Pietro Molinari, Roberto Pellegrino, Giuseppe Colla

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

67 Citazioni (Scopus)

Abstract

The phytochemical profile of Aloe barbadensis Mill. and Aloe arborescens Mill. was investigated using colorimetric assays, triple quadrupole and time-of-flight mass spectrometry, focusing on phenolic secondary metabolites in the different leaf portions. Hydroxycinnamic acids, several characteristic anthrones and chromones, the phenolic dimer feralolide and flavonoids such as flavones and isoflavones were identified. The stable radical DPPH-test and the ORAC assay were then used to determine the in vitro radical scavenging. The outer green rind was the most active, while the inner parenchyma was much less effective. The 5-methylchromones aloesin, aloeresin A and aloesone were the most active among the pure secondary metabolites tested. The results suggest that several compounds are likely to contribute to the overall radical scavenging activity, and indicate that leaf portion must be taken into account when the plant is used for its antioxidant properties.
Lingua originaleEnglish
pagine (da-a)501-507
Numero di pagine7
RivistaFood Chemistry
Volume170
DOI
Stato di pubblicazionePubblicato - 2015

Keywords

  • Aloe
  • Analytical Chemistry
  • Anthrones
  • Antioxidants
  • Chromatography, High Pressure Liquid
  • Chromones
  • Flavonoids
  • Food Science
  • Free Radical Scavengers
  • Glucosides
  • Mass Spectrometry
  • Medicine (all)
  • Metabolic profiling
  • ORAC
  • Phenylpropanoids
  • Plant Extracts
  • Plant Leaves
  • Polyphenols
  • Tandem Mass Spectrometry

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