Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/46811
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dc.contributor.authorGarzoli, Stefaniait
dc.contributor.authorMasci, Valentina Laghezzait
dc.contributor.authorCaradonna, Valentinait
dc.contributor.authorTiezzi, Antonioit
dc.contributor.authorGiacomello, Pierluigiit
dc.contributor.authorElisa Ovidiit
dc.date.accessioned2022-02-08T17:57:15Z-
dc.date.available2022-02-08T17:57:15Z-
dc.date.issued2021it
dc.identifier.issn1424-8247it
dc.identifier.urihttp://hdl.handle.net/2067/46811-
dc.description.abstractIn this study, the chemical composition of the vapor and liquid phase of Pinus cembra L., Pinus mugo Turra, Picea abies L., and Abies Alba M. needles essential oils (EOs) was investigated by Headspace-Gas Chromatography/Mass Spectrometry (HS-GC/MS). In the examined EOs, a total of twenty-eight components were identified, most of which belong to the monoterpenes family. α-Pinene (16.6-44.0%), β-pinene (7.5-44.7%), limonene (9.5-32.5%), and γ-terpinene (0.3-19.7%) were the most abundant components of the liquid phase. Such major compounds were also detected in the vapor phase of all EOs, and α-pinene reached higher relative percentages than in the liquid phase. Then, both the liquid and vapor phases were evaluated in terms of antibacterial activity against three Gram-negative bacteria (Escherichia coli, Pseudomonas fluorescens, and Acinetobacter bohemicus) and two Gram-positive bacteria (Kocuria marina and Bacillus cereus) using a microwell dilution assay, disc diffusion assay, and vapor phase test. The lowest Minimum Inhibitory Concentration (MIC) (13.28 mg/mL) and Minimal Bactericidal Concentration (MBC) (26.56 mg/mL) values, which correspond to the highest antibacterial activities, were reported for P. abies EO against A. bohemicus and for A. alba EO against A. bohemicus and B. cereus. The vapor phase of all the tested EOs was more active than liquid phase, showing the inhibition halos from 41.00 ± 10.15 mm to 80.00 ± 0.00 mm for three bacterial strains (A. bohemicus, K. marina, and B. cereus). Furthermore, antioxidant activities were also investigated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azinobis (3- ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) assays, and a concentration-dependent antioxidant capacity for all EOs was found. P. mugo EO showed the best antioxidant activity than the other Pinaceae EOs. The four Pinaceae EOs could be further investigated for their promising antibacterial and antioxidant properties, and, in particular, α-pinene seems to have interesting possibilities for use as a novel natural antibacterial agent.it
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleLiquid and Vapor Phase of Four Conifer-Derived Essential Oils: Comparison of Chemical Compositions and Antimicrobial and Antioxidant Propertiesit
dc.typearticle*
dc.identifier.doi10.3390/ph14020134it
dc.identifier.pmid33567501it
dc.identifier.scopus2-s2.0-85100713916it
dc.identifier.isiWOS:000622887400001it
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85100713916it
dc.relation.journalPHARMACEUTICALSit
dc.relation.firstpage1it
dc.relation.lastpage15it
dc.relation.volume14it
dc.relation.issue2it
dc.type.miur262*
item.fulltextWith Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextrestricted-
item.openairetypearticle-
item.cerifentitytypePublications-
crisitem.journal.journalissn1424-8247-
crisitem.journal.anceE199974-
crisitem.author.orcidhttps://orcid.org/0000-0001-8876-6331-
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