Artículo
Effect of Seasonal Variations and Collection Form on Antioxidant Activity of Propolis from San Juan, Argentina
Isla, Maria Ines
; Zampini, Iris Catiana
; Ordóñez, Roxana Mabel
; Cuello, Ana Soledad
; Carrasco Juárez, María Belén; Sayago, Jorge Esteban; Nieva Moreno, María Inés
; Alberto, Maria Rosa
; Vera, Nancy Roxana; Bedascarrabure, Enrique; Alvarez, Alejandro Raúl; Cioccini, Fabian; Maldonado, Luis María
Fecha de publicación:
12/2009
Editorial:
Mary Ann Liebert
Revista:
Journal Of Medicinal Food
ISSN:
1096-620X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Propolis was included in the Argentine Food Code as a functional food. The chemical parameters and antioxidant properties of propolis samples from the same colonies of Apis mellifera in San Juan (Cuyo region, Western Argentine) were compared every month for 1 year using two collection methods. Chemical parameters were analyzed by the spectrophotometric method and fingerprinting using high-performance liquid chromatography with ultraviolet detection. The antioxidant activities of propolis samples were measured using model systems including the analysis of the scavenging activities for 2,2′-azino-bis(3- ethylbenzthiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals and the β-carotene bleaching assay. The results showed that propolis had a higher free radical scavenging and lipid peroxidation inhibitory capacity than butylated hydroxytoluene and quercetin, antioxidants used in the pharmaceutical and food industries. The concentration required to scavenge 50% of free radicals (SC50) values differed depending on the sample collection month. Samples collected in November had the highest antioxidant capacity. In all cases, SC50 values of propolis samples obtained by scraping were similar to those collected from a wire mesh (5μg/mL for ABTS and 20-30μg/mL for DPPH radicals). A significant positive correlation was found between the antioxidant capacity and flavonoid content of each analyzed extract. The chemical profiles were very similar. Galangin (3,5,7- trihydroxyflavone), an antioxidant compound, was detected in all samples as a major compound. The chromatographic profile suggests that of Baccharis sp., which would be one of the botanical sources of propolis from western Argentina, and the content of galangin can be used as a parameter for evaluating propolis quality. Our results suggest that Argentine propolis from Cuyo is a promising source of bioactive compounds as ingredients for developing functional foods with a beneficial impact on oxidative stress.
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Articulos(INQUINOA)
Articulos de INST.DE QUIMICA DEL NOROESTE
Articulos de INST.DE QUIMICA DEL NOROESTE
Citación
Isla, Maria Ines; Zampini, Iris Catiana; Ordóñez, Roxana Mabel; Cuello, Ana Soledad; Carrasco Juárez, María Belén; et al.; Effect of Seasonal Variations and Collection Form on Antioxidant Activity of Propolis from San Juan, Argentina; Mary Ann Liebert; Journal Of Medicinal Food; 12; 6; 12-2009; 1334-1342
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