INVESTIGADORES
ZUNINO Maria Paula
artículos
Título:
Total Phenolic Content, Radical Scavenging Properties, and Essential Oil Composition of Origanum Species from Different Populations
Autor/es:
JOSÉ S. DAMBOLENA; MARIA P. ZUNINO; ENRIQUE I. LUCINI; RUBEN OLMEDO; ERIKA BANCHIO; PAULA J. BIMA; JULIO A. ZYGADLO
Revista:
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Editorial:
AMER CHEMICAL SOC
Referencias:
Año: 2010 vol. 58 p. 1115 - 1120
ISSN:
0021-8561
Resumen:
The aim of this work was to compare the antiradical activity, total phenol content (TPC), and
essential oil composition of Origanum vulgare spp. virens, Origanum _ applii, Origanum _
majoricum, and O. vulgare spp. vulgare cultivated in Argentina in different localities. The experiment
was conducted in the research station of La Consulta (INTA-Mendoza), the research station of
Santa Lucia (INTA-San Juan), and Agronomy Faculty of National University of La Pampa, from 2007
to 2008. The composition of the essential oils of oregano populations was independent of cultivation
conditions. In total, 39 compounds were identified in essential oils of oregano from Argentina by
means of GC-MS. Thymol and trans-sabinene hydrate were the most prominent compounds,
followed by ã-terpinene, terpinen-4-ol, and R-terpinene. O. vulgare vulgare is the only Origanum
studied which is rich in ã-terpinene. Among tested oregano, O. _ majoricum showed the highest
essential oil content, 3.9 mg g-1 dry matter. The plant extract of O. _ majoricum had greater total
phenol content values, 19.36 mg/g dry weight, than the rest of oregano studied. To find relationships
among TPC, free radical scavenging activity (FRSA), and climate variables, canonical correlations
were calculated. The results obtained allow us to conclude that 70% of the TPC and FRSA
variability can be explained by the climate variables (R2 = 0.70; p = 8.3 _ 10-6), the temperature
being the most important climatic variable.