Liquid and vapor phase of four conifer-derived essential oils: Comparison of chemical compositions and antimicrobial and antioxidant properties
| العنوان: | Liquid and vapor phase of four conifer-derived essential oils: Comparison of chemical compositions and antimicrobial and antioxidant properties |
|---|---|
| المؤلفون: | Valentina Caradonna, Elisa Ovidi, Antonio Tiezzi, Stefania Garzoli, Valentina Laghezza Masci, Pierluigi Giacomello |
| المصدر: | Pharmaceuticals Volume 14 Issue 2 Pharmaceuticals, Vol 14, Iss 134, p 134 (2021) |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Pinus cembra L, Pinus mugo Turra, DPPH, Picea abies L, Pharmaceutical Science, lcsh:Medicine, lcsh:RS1-441, medicine.disease_cause, 01 natural sciences, Article, Essential oil, law.invention, lcsh:Pharmacy and materia medica, chemistry.chemical_compound, Antioxidant activity, law, Drug Discovery, medicine, Acinetobacter bohemicus, Antibacterial agent, Limonene, Chromatography, Minimum bactericidal concentration, ABTS, Abies alba M, 010405 organic chemistry, lcsh:R, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, Chemical investigation, chemistry, Molecular Medicine, Antibacterial activity, HS-GC/MS |
| الوصف: | In 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. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88b223b64f42bc7d8036119190981b12Test http://hdl.handle.net/11573/1516790Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....88b223b64f42bc7d8036119190981b12 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |