Evaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat
Abstract Nine odorless laboratory-collected hydro-distilled aqueous extracts (basil, calendula, centrifuged oregano, corn silk, laurel, oregano, rosemary, spearmint, thyme) and one industrial steam-distilled oregano hydrolate acquired as by-products of essential oils purification were screened for t...
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2021
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oai:doaj.org-article:6f09dbbbd9094ff0947726f4b4df7ddd2021-11-14T12:24:37ZEvaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat10.1038/s41598-021-01251-02045-2322https://doaj.org/article/6f09dbbbd9094ff0947726f4b4df7ddd2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01251-0https://doaj.org/toc/2045-2322Abstract Nine odorless laboratory-collected hydro-distilled aqueous extracts (basil, calendula, centrifuged oregano, corn silk, laurel, oregano, rosemary, spearmint, thyme) and one industrial steam-distilled oregano hydrolate acquired as by-products of essential oils purification were screened for their in vitro antimicrobial activity against three Salmonella Typhimurium strains (4/74, FS8, FS115) at 4 and 37 °C. Susceptibility to the extracts was mainly plant- and temperature-dependent, though strain dependent effects were also observed. Industrial oregano hydrolate eliminated strains immediately after inoculation, exhibiting the highest antimicrobial potential. Hydro-distilled extracts eliminated/reduced Salmonella levels during incubation at 4 °C. At 37 °C, oregano, centrifuged oregano, thyme, calendula and basil were bactericidal while spearmint, rosemary and corn silk bacteriostatic. A strain-dependent effect was observed for laurel. The individual or combined effect of marinades and edible coatings prepared of industrial hydrolate and hydro-distilled oregano extracts with or without oregano essential oil (OEO) was tested in pork meat at 4 °C inoculated with FS8 strain. Lower in situ activity was observed compared to in vitro assays. Marinades and edible coatings prepared of industrial oregano hydrolate + OEO were the most efficient in inhibiting pathogen. Marination in oregano extract and subsequent coating with either 50% oregano extract + OEO or water + OEO enhanced the performance of oregano extract. In conclusion, by-products of oregano essential oil purification may be promising alternative antimicrobials to pork meat stored under refrigeration when applied in the context of multiple hurdle approach.Alkmini GavriilEvangelia ZilelidouAngelis-Evangelos PapadopoulosDanae SiderakouKonstantinos M. KasiotisSerkos A. HaroutounianChrysavgi GardeliIlias GiannenasPanagiotis N. SkandamisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021) |
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Medicine R Science Q |
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Medicine R Science Q Alkmini Gavriil Evangelia Zilelidou Angelis-Evangelos Papadopoulos Danae Siderakou Konstantinos M. Kasiotis Serkos A. Haroutounian Chrysavgi Gardeli Ilias Giannenas Panagiotis N. Skandamis Evaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat |
description |
Abstract Nine odorless laboratory-collected hydro-distilled aqueous extracts (basil, calendula, centrifuged oregano, corn silk, laurel, oregano, rosemary, spearmint, thyme) and one industrial steam-distilled oregano hydrolate acquired as by-products of essential oils purification were screened for their in vitro antimicrobial activity against three Salmonella Typhimurium strains (4/74, FS8, FS115) at 4 and 37 °C. Susceptibility to the extracts was mainly plant- and temperature-dependent, though strain dependent effects were also observed. Industrial oregano hydrolate eliminated strains immediately after inoculation, exhibiting the highest antimicrobial potential. Hydro-distilled extracts eliminated/reduced Salmonella levels during incubation at 4 °C. At 37 °C, oregano, centrifuged oregano, thyme, calendula and basil were bactericidal while spearmint, rosemary and corn silk bacteriostatic. A strain-dependent effect was observed for laurel. The individual or combined effect of marinades and edible coatings prepared of industrial hydrolate and hydro-distilled oregano extracts with or without oregano essential oil (OEO) was tested in pork meat at 4 °C inoculated with FS8 strain. Lower in situ activity was observed compared to in vitro assays. Marinades and edible coatings prepared of industrial oregano hydrolate + OEO were the most efficient in inhibiting pathogen. Marination in oregano extract and subsequent coating with either 50% oregano extract + OEO or water + OEO enhanced the performance of oregano extract. In conclusion, by-products of oregano essential oil purification may be promising alternative antimicrobials to pork meat stored under refrigeration when applied in the context of multiple hurdle approach. |
format |
article |
author |
Alkmini Gavriil Evangelia Zilelidou Angelis-Evangelos Papadopoulos Danae Siderakou Konstantinos M. Kasiotis Serkos A. Haroutounian Chrysavgi Gardeli Ilias Giannenas Panagiotis N. Skandamis |
author_facet |
Alkmini Gavriil Evangelia Zilelidou Angelis-Evangelos Papadopoulos Danae Siderakou Konstantinos M. Kasiotis Serkos A. Haroutounian Chrysavgi Gardeli Ilias Giannenas Panagiotis N. Skandamis |
author_sort |
Alkmini Gavriil |
title |
Evaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat |
title_short |
Evaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat |
title_full |
Evaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat |
title_fullStr |
Evaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat |
title_full_unstemmed |
Evaluation of antimicrobial activities of plant aqueous extracts against Salmonella Typhimurium and their application to improve safety of pork meat |
title_sort |
evaluation of antimicrobial activities of plant aqueous extracts against salmonella typhimurium and their application to improve safety of pork meat |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doaj.org/article/6f09dbbbd9094ff0947726f4b4df7ddd |
work_keys_str_mv |
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