Secondary metabolites and antioxidant capacities of Waldheimia glabra (Decne.) Regel from Nepal
Articolo
Data di Pubblicazione:
2013
Citazione:
Secondary metabolites and antioxidant capacities of Waldheimia glabra (Decne.) Regel from Nepal / A. Giorgi, S. Panseri, M. Mattara, C. Andreis, L.M. Chiesa. - In: JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE. - ISSN 0022-5142. - 93:5(2013 Mar 30), pp. 1026-1034. [10.1002/jsfa.5839]
Abstract:
BACKGROUND: The phenolic content, volatile compound fingerprint and antioxidant capacity of Waldheimia glabra (Decne.)
Regel (Asteraceae), a wild plant from the Himalayan mountains used in Sherpa religious rituals and in traditional medicine,
were determined for the first time to investigate its suitability as a source of natural antioxidants.
RESULTS: The total phenolic content and antioxidant capacity of dried and powdered plants from two different altitudes (5000
and 5200mabove sea level) in Khumbu Valley, Nepalwere estimated by the Folin–Ciocalteu and 2,2-diphenyl-1-picrylhydrazyl
radical methods respectively. The volatile organic compound (VOC) fingerprints from leafing plants (in vivo and in situ VOC
sampling) and from dried plant samples were evaluated by headspace solid phase microextraction. The results indicated
that W. glabra was a good source of phenolics with antioxidant properties. A correlation between total phenolic content and
antioxidant capacity was found (r2 = 0.9111). Seychellene, a volatile compound that characterises patchouli oil, was detected
for the first time in a species of the Asteraceae family.
CONCLUSION: Waldheimia glabra was proved to be a good source of antioxidants, partially supporting its traditional uses.
Further studies aimed at deepening knowledge on W. glabra bioactivity and its possible useswill be of interest, considering the
lack of proper scientific awareness regarding these aspects.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
HS-SPME; Waldheimia glabra; total phenolic compounds; volatile organic compounds (VOCs); DPPH; Himalaya
Elenco autori:
A. Giorgi, S. Panseri, M. Mattara, C. Andreis, L.M. Chiesa
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