title: ANTIRADICAL AND ANTIMICROBIAL ACTIVITY OF PHENOLIC FRACTIONS OBTAINED FROM HONEYS.
abstract: Honey is a natural product consisting of multiple components which determine its dietary and medicinal properties. In this work there were studied methanol fractions obtained from seven honeys from Lower Silesia (Poland) collected in different seasons of three successive years. Melissopalynologic studies revealed that two of them were polyfloral, and five were classified as monofloral (two buckwheat and three rapes). The amount of phenolic compounds in honeys varied from 0.09 to 0.38 mg per g of honey. Honeys harvested in 2010 were the richest in phenolic compounds and especially rich was buckwheat honey, comparing to 2011- 2012. Determination of antioxidant potential with the DPPH radical revealed that the strongest antiradical activity was exhibited by extracts obtained from polyfloral (1.22 TAU(515/mg)) and buckwheat (1.06 TAU(515lmg)) honeys, while the highest number of antiradical units was observed for rape honey (3.64 TAU(515/g)). Polyphenolic fractions exhibited various bactericidal activities against Klebsiella pneumoniae and Staphylococcus aureus and weak or no activity was observed against Pseudomonas aeruginosa.
authors.forename: Irena
authors.initials: I
authors.lastname: Mazol
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Sroka
authors.forename: Alina
authors.initials: A
authors.lastname: Sowa
authors.forename: Anna
authors.initials: A
authors.lastname: Ostrowska
authors.forename: Andrzej
authors.initials: A
authors.lastname: Dryś
authors.forename: Andrzej
authors.initials: A
authors.lastname: Gamian
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000737:chemistry; D005591:Chemical Fractionation; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D006722:Honey; D007711:Klebsiella pneumoniae / Q000187:drug effects / Q000254:growth & development; D000432:Methanol / Q000737:chemistry; D008826:Microbial Sensitivity Tests; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D010851:Picrates / Q000737:chemistry; D011044:Poland; D012621:Seasons; D012997:Solvents / Q000737:chemistry; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development
chemical_list: D000890:Anti-Infective Agents; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D010636:Phenols; D010851:Picrates; D012997:Solvents; C004931:1,1-diphenyl-2-picrylhydrazyl; D000432:Methanol