title: Metabolomic fingerprint classification of Brachychiton acerifolius organs via UPLC-qTOF-PDA-MS analysis and chemometrics.
abstract: Brachychiton acerifolius, or Sterculia acerifolia as formerly known, is a member of a genus reported for a myriad of bioactive compounds. Metabolome analysis of B. acerifolius--leaves, flowers and seeds--and quantification of its major compounds are demonstrated in this study. Metabolites were analysed via UPLC-PDA-qTOF-(±) ESI-MS and UPLC/ITMS, with a total of 56 metabolites characterised including 30 flavonoids, 2 anthocyanins, 6 phenolic acids (i.e. citric and hydroxycitric acid conjugates) and 8 fatty acids (FAs). Multivariate data analyses (i.e. principle component analysis and orthogonal partial least square-discriminate analysis) were applied to identify metabolite markers for each organ. Pelargonidin-O-glucoside and naringenin-O-glucuronide were found exclusively in flowers versus flavone enrichment in leaves (i.e. luteolin-O-glucuronide and apigenin-O-rhamnosyl glucuronide). Gas chromatography/mass spectrometry analysis revealed the presence of toxic cyclopropene FAs in seeds which may restrict its use. Antioxidant activity assessment for the three organs was performed in comparison with vitamin C as positive control. Leaves showed the highest activity (IC50 0.015 mg/mL).
authors.affiliation: a Pharmacognosy Department , College of Pharmacy, Cairo University , Kasr el Aini Street, P.B. 11562 , Cairo , Egypt.
authors.forename: Mohamed A
authors.initials: MA
authors.lastname: Farag
authors.forename: Aisha H
authors.initials: AH
authors.lastname: Abou Zeid
authors.forename: Manal A
authors.initials: MA
authors.lastname: Hamed
authors.forename: Zeinab
authors.initials: Z
authors.lastname: Kandeel
authors.forename: Hanaa M
authors.initials: HM
authors.lastname: El-Rafie
authors.forename: Radwa H
authors.initials: RH
authors.lastname: El-Akad
mesh_terms: D000470:Alkaloids / Q000737:chemistry; D000872:Anthocyanins / Q000737:chemistry; D000975:Antioxidants / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D005227:Fatty Acids / Q000737:chemistry; D005419:Flavonoids / Q000737:chemistry; D035264:Flowers / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D005960:Glucosides / Q000737:chemistry; D020719:Glucuronides / Q000737:chemistry; D019660:Malvaceae / Q000737:chemistry*; D055442:Metabolome; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D012639:Seeds / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D000470:Alkaloids; D000872:Anthocyanins; D000975:Antioxidants; D005227:Fatty Acids; D005419:Flavonoids; D005960:Glucosides; D020719:Glucuronides; D010636:Phenols
keywords: Brachychiton acerifolius; UPLC/MS analysis; antioxidant activity; chemometrics