{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T22:17:49Z","timestamp":1792189069064,"version":"4.4.0"},"reference-count":48,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,10,12]],"date-time":"2022-10-12T00:00:00Z","timestamp":1665532800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Life"],"abstract":"<jats:p>The purpose of this study was to demonstrate the antimicrobial effects of natural essential oils (EO) and determine their preservative action. Eight natural essential oils were tested against Staphylococcus aureus, Escherichia coli, and Candida albicans representing gram positive, gram negative, and fungi, respectively. The plant materials were used in this study viz. Thymus vulgaris\u2014thyme (TV), Mentha virdis (MV), Mentha longifolia (ML), Rosmarinus officinalis\u2014rosemary (RO), Lavandula dentata\u2014lavender (LD), Origanum majorana\u2014oregano (OM), which belong to the Lamiaceae family. The other two plants were Cymbopogon citratus\u2014lemon grass (family Poaceae) (CC), and Eucalyptus globulus (family Myrtaceae) (EG). Employing the disc diffusion susceptibility test, minimum inhibitory and minimum bactericidal concentrations were estimated for each oil, followed by the addition of oils to pasteurized apple juice after microbial induction. The results revealed that thyme oil showed the maximum zone of inhibition against all tested microbes enriched with monoterpenes class viz. eucalyptol (24.3%), thymol (17.4%), and \u03b3-terpinene (15.2%). All other tested oils exhibited a concentration-dependent inhibition of growth and their MIC ranged from 0.1 to 100 \u00b5L\/mL. The recorded minimum bactericidal concentration values were apparently double the minimum inhibitory concentration. The EO of Mentha virdis followed by Mentha longifolia showed maximum antimicrobial activity against the tested organisms in pasteurized apple juice. A gas chromatography\u2013mass spectroscopy (GC\u2013MS) analysis of lemon grass, thyme, and Mentha virdis essential oils showed their enrichment with monoterpenes class recording 97.10, 97.04, and 97.61%, respectively.<\/jats:p>","DOI":"10.3390\/life12101587","type":"journal-article","created":{"date-parts":[[2022,10,12]],"date-time":"2022-10-12T20:53:29Z","timestamp":1665608009000},"page":"1587","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["GC\u2013MS Profiling of Naturally Extracted Essential Oils: Antimicrobial and Beverage Preservative Actions"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6964-2560","authenticated-orcid":false,"given":"Reham F.","family":"El-Kased","sequence":"first","affiliation":[{"name":"Microbiology Department, Faculty of Pharmacy, The British University in Egypt, Cairo 11837, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4782-8396","authenticated-orcid":false,"given":"Dina M.","family":"El-Kersh","sequence":"additional","affiliation":[{"name":"Pharmacognosy Department, Faculty of Pharmacy, The British University in Egypt, Cairo 11837, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"811","DOI":"10.1007\/s00203-017-1393-y","article-title":"Current pathogenic Escherichia coli foodborne outbreak cases and therapy development","volume":"199","author":"Yang","year":"2017","journal-title":"Arch. 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