UHPLC-MS Metabolomic Fingerprinting, Antioxidant, and Enzyme Inhibition Activities of Himantormia lugubris from Antarctica

Carlos Areche, Javier Romero Parra, Beatriz Sepulveda, Olimpo García-Beltrán, Mario J. Simirgiotis

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

Himantormia lugubris is a Chilean native small lichen shrub growing in the Antarctica re-gion. In this study, the metabolite fingerprinting and the antioxidant and enzyme inhibitory potential from this species and its four major isolated compounds were investigated for the first time. Using ultra-high performance liquid chromatography coupled to quadrupole-Orbitrap mass spec-trometry analysis (UHPLC-Q-Orbitrap-MS), several metabolites were identified including specific compounds as chemotaxonomical markers, while major metabolites were quantified in this species. A good inhibition activity against cholinesterase (acetylcholinesterase (AChE) IC50: 12.38 ± 0.09 µg/mL, butyrylcholinesterase (BChE) IC50: 31.54 ± 0.20 µg/mL) and tyrosinase (22.32 ± 0.21 µg/mL) enzymes of the alcoholic extract and the main compounds (IC50: 28.82 ± 0.10 µg/mL, 36.43 ± 0.08 µg/mL, and 7.25 ± 0.18 µg/mL, respectively, for the most active phenolic atranol) was found. The extract showed a total phenolic content of 47.4 + 0.0 mg of gallic acid equivalents/g. In addition, antioxidant activity was assessed using bleaching of DPPH and ORAC (IC50: 75.3 ± 0.02 µg/mL and 32.7 ± 0.7 μmol Trolox/g lichen, respectively) and FRAP (27.8 ± 0.0 μmol Trolox equivalent/g) ex-periments. The findings suggest that H. lugubris is a rich source of bioactive compounds with po-tentiality in the prevention of neurodegenerative or noncommunicable chronic diseases.

Idioma originalInglés
Número de artículo560
PublicaciónMetabolites
Volumen12
N.º6
DOI
EstadoPublicada - jun. 2022

Áreas temáticas de ASJC Scopus

  • Endocrinología, diabetes y metabolismo
  • Bioquímica
  • Biología molecular

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