INVESTIGADORES
RIOS YURQUINA Francisco Teodoro
congresos y reuniones científicas
Título:
Polyphenol content in honey of three phytogeographical regions of the province of Jujuy
Autor/es:
RIOS F.; LOBO M.; SAMMAN N.
Lugar:
Buenos Aires
Reunión:
Congreso; 42º Congreso Internacional de Apicultura- Apimondia 2011; 2011
Institución organizadora:
Federación Internacional de Asociaciones Apícolas
Resumen:
Jujuy province has different phytogeographical regions which presents a large range of beekeeping. This property influences the bioactive profile and quality of the honeys. The polyphenolic compounds are found in main quantity and are responsible for antioxidant properties of the honey. The aim of this work is to select the phytogeographical region that produces honeys with highest polyphenol content, to use it in functional foods. Samples were collect from different regions: Mountainous forests (MF), Sub-Andean Sierras (SS) and Temperate Valleys (TV). A total of twelve samples were analyzed. Moisture content was determined by refractometry method e hydroxymethylfurfural (mg HMF/kg of honey) by White method. The polyphenols compounds were quantified by Folin-Cicalteu method (mg equivalent of gallic acid /100 g honey). Honey´s color (mm Pfund) was determined with a ColorQuest XE (Hunter Lab). The honeys generally were multifloral, but two samples are monofloral at the MF region (determined in previous works). The following results were obtained for moisture 18,74 ± 1,59; 15,96 ± 0,57 and 16,79 ± 1,37; for HMF 13,79 ± 11,41; 9,05 ± 5,36 and 27,08 ± 3,95 for MF, SS and TV regions respectively. In accordance with these values, the SS zone presents honeys with less treated during their harvesting and storage. Total phenolic contents varied from 192,89 ± 57,47 (TV); 135,95 ± 76,87 (MF) up to SS 134,59 ± 43,04. Color measured (mm Pfund) were 70,65 ± 17,45 (MF); 67,24 ± 6,50 (TV) and 49,46 ± 14,51 (SS). The large variability of polyphenols content could be an indicator of phytogeographic regions. More studies to correlate the polyphenol content and phytogeographical region are under progress. However the study confirms that Jujuy honeys contains significant antioxidant proprieties.
