title: Amino acid composition and antioxidant capacity of Spanish honeys.
abstract: The amino acid composition of 53 honey samples from Spain, consisting of 39 floral, 5 honeydew, and 9 blend honeys, has been determined. Physicochemical characteristics, polyphenolic content, amino acid composition, and estimation of the radical scavenging capacity against the stable free radical DPPH of the honey samples were analyzed. The resulting data have been statistically evaluated. The results showed that pH, acidity, net absorbance, electrical conductivity, and total polyphenolic contents of the honeys showed a strong correlation with the radical scavenging capacity. The correlation between the radical scavenging capacity of honey and amino acid contents was high with 18 of the 20 amino acids detected, with correlation values higher than those obtained for polyphenolic content. These results suggest that the amino acid composition of honey is an indicator of the sample's scavenging capacity.
authors.affiliation: Departamento de Investigación Agroalimentaria, Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario (IMIDRA), Finca El Encin, Apartado 127, 28800 AlcalA de Henares, Madrid, Spain. rosana.perez@madrid.org
authors.forename: Rosa Ana
authors.initials: RA
authors.lastname: Pérez
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Iglesias
authors.forename: Encarnación
authors.initials: E
authors.lastname: Pueyo
authors.forename: Montserrat
authors.initials: M
authors.lastname: Gonzalez
authors.forename: Cristina
authors.initials: C
authors.lastname: de Lorenzo
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D000975:Antioxidants / Q000032:analysis*; D001713:Biphenyl Compounds; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis; D016166:Free Radical Scavengers / Q000032:analysis; D006722:Honey / Q000032:analysis*; D010636:Phenols / Q000032:analysis; D010851:Picrates; D059808:Polyphenols; D013030:Spain
chemical_list: D000596:Amino Acids; D000975:Antioxidants; D001713:Biphenyl Compounds; D005419:Flavonoids; D016166:Free Radical Scavengers; D010636:Phenols; D010851:Picrates; D059808:Polyphenols; C004931:1,1-diphenyl-2-picrylhydrazyl