title: Cultivable microorganisms associated with honeys of different geographical and botanical origin.
abstract: In this study, the composition of the cultivable microbial populations of 38 nectar honey and honeydew honey samples of different botanical and geographical origin were assessed. After growth in specific media, various colonies with different appearance were isolated and purified before phenotypic (morphological, physiological and biochemical traits) and genotypic [randomly amplified polymorphic DNA (RAPD), repetitive DNA elements-PCR (rep-PCR) and restriction fragment length polymorphism (RFLP)] differentiation. The identification was carried out by 16S rRNA gene sequencing for bacteria and, in addition to RFLP, by sequencing the D1/D2 region of the 26S rRNA gene for yeasts and the 5.8S-ITS rRNA region for filamentous fungi. The results showed the presence of 13 species of bacteria, 5 of yeasts and 17 of filamentous fungi; the species most frequently isolated were Bacillus amyloliquefaciens, Zygosaccharomyces mellis and Aspergillus niger for the three microbial groups, respectively. The highest microbial diversity was found in multifloral honeys. No correlation among the microbial species and the botanical/geographical origin was found, but some strains were highly adapted to these matrices since they were found in several samples of different origin.
authors.affiliation: Department of Agricultural and Forestry Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy.
authors.forename: Milko
authors.initials: M
authors.lastname: Sinacori
authors.forename: Nicola
authors.initials: N
authors.lastname: Francesca
authors.forename: Antonio
authors.initials: A
authors.lastname: Alfonzo
authors.forename: Margherita
authors.initials: M
authors.lastname: Cruciata
authors.forename: Ciro
authors.initials: C
authors.lastname: Sannino
authors.forename: Luca
authors.initials: L
authors.lastname: Settanni
authors.forename: Giancarlo
authors.initials: G
authors.lastname: Moschetti
mesh_terms: D001419:Bacteria / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000302:isolation & purification*; D016002:Discriminant Analysis; D035264:Flowers / Q000737:chemistry; D005658:Fungi / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000302:isolation & purification*; D005843:Geography; D006722:Honey / Q000145:classification / Q000382:microbiology*; D015003:Yeasts / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000302:isolation & purification*
keywords: Bacteria; Culture-dependent approach; Filamentous fungi; Honey; Molecular characterisation; Yeasts