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Repeated sub-inhibitory doses of cassia essential oil do not increase the tolerance pattern in Listeria monocytogenes cells.

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Title: Repeated sub-inhibitory doses of cassia essential oil do not increase the tolerance pattern in Listeria monocytogenes cells.
Authors: Bermúdez-Capdevila, M.1 (AUTHOR), Cervantes-Huamán, B.R.H.1 (AUTHOR), Rodríguez-Jerez, J.J.1 (AUTHOR) josejuan.rodriguez@uab.cat, Ripolles-Avila, C.1 (AUTHOR)
Source: LWT - Food Science & Technology. Aug2022, Vol. 165, pN.PAG-N.PAG. 1p.
Subjects: Listeria monocytogenes, Cassia (Genus), Essential oils, Drug resistance in microorganisms, Exposure dose, Extracellular matrix
Abstract: Antimicrobial resistance in Listeria monocytogenes biofilms is considered a risk. When using disinfectants, the minimum inhibitory concentration (MIC) must be contemplated to avoid resistance. The objective of the present study was to determine the MIC of four essential oils in four L. monocytogenes strains. Once the MICs were obtained, the effect of subinhibitory doses of the most effective oil was determined. Strains were subsequently subjected to increasing doses of cassia and the MICs were determined again to evaluate differences. The effect of subinhibitory doses for biofilm formation was evaluated using quantitative and observational methodologies. Last, it was studied whether the strains were more sensitive to antibiotics after being in contact with the oil. After continuous exposure to 1/2 MIC, a decrease in the initial MIC (P = 0.013) was observed, specifically for strains belonging to serotype 1/2a (P = 0.041). In contrast, the formation of biofilms did not show differences between the control and exposed groups (P > 0.05). The qualitative study showed that there were no differences in the structure of the biofilms before and after contact with cassia, except for the CECT 935 strain, indicating a strain-dependent trend. Moreover, species-dependent differences were observed in the conformation of the extracellular matrix. • Subinhibitory doses of cassia oil were exposed to L. monocytogenes strains. • S2-bac and EDG-e significantly decreased their MIC after being exposed to the oil. • Biofilm production did not change after subinhibitory doses exposure. • CECT 935 revealed adaptation as higher organized biofilm structures were formed. • Susceptibility profile to antibiotics differed when strains were exposed to cassia. [ABSTRACT FROM AUTHOR]
Copyright of LWT - Food Science & Technology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Repeated sub-inhibitory doses of cassia essential oil do not increase the tolerance pattern in Listeria monocytogenes cells.
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  Data: <searchLink fieldCode="AR" term="%22Bermúdez-Capdevila%2C+M%2E%22">Bermúdez-Capdevila, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cervantes-Huamán%2C+B%2ER%2EH%2E%22">Cervantes-Huamán, B.R.H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rodríguez-Jerez%2C+J%2EJ%2E%22">Rodríguez-Jerez, J.J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> josejuan.rodriguez@uab.cat</i><br /><searchLink fieldCode="AR" term="%22Ripolles-Avila%2C+C%2E%22">Ripolles-Avila, C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22LWT+-+Food+Science+%26+Technology%22">LWT - Food Science & Technology</searchLink>. Aug2022, Vol. 165, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Listeria+monocytogenes%22">Listeria monocytogenes</searchLink><br /><searchLink fieldCode="DE" term="%22Cassia+%28Genus%29%22">Cassia (Genus)</searchLink><br /><searchLink fieldCode="DE" term="%22Essential+oils%22">Essential oils</searchLink><br /><searchLink fieldCode="DE" term="%22Drug+resistance+in+microorganisms%22">Drug resistance in microorganisms</searchLink><br /><searchLink fieldCode="DE" term="%22Exposure+dose%22">Exposure dose</searchLink><br /><searchLink fieldCode="DE" term="%22Extracellular+matrix%22">Extracellular matrix</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Antimicrobial resistance in Listeria monocytogenes biofilms is considered a risk. When using disinfectants, the minimum inhibitory concentration (MIC) must be contemplated to avoid resistance. The objective of the present study was to determine the MIC of four essential oils in four L. monocytogenes strains. Once the MICs were obtained, the effect of subinhibitory doses of the most effective oil was determined. Strains were subsequently subjected to increasing doses of cassia and the MICs were determined again to evaluate differences. The effect of subinhibitory doses for biofilm formation was evaluated using quantitative and observational methodologies. Last, it was studied whether the strains were more sensitive to antibiotics after being in contact with the oil. After continuous exposure to 1/2 MIC, a decrease in the initial MIC (P = 0.013) was observed, specifically for strains belonging to serotype 1/2a (P = 0.041). In contrast, the formation of biofilms did not show differences between the control and exposed groups (P > 0.05). The qualitative study showed that there were no differences in the structure of the biofilms before and after contact with cassia, except for the CECT 935 strain, indicating a strain-dependent trend. Moreover, species-dependent differences were observed in the conformation of the extracellular matrix. • Subinhibitory doses of cassia oil were exposed to L. monocytogenes strains. • S2-bac and EDG-e significantly decreased their MIC after being exposed to the oil. • Biofilm production did not change after subinhibitory doses exposure. • CECT 935 revealed adaptation as higher organized biofilm structures were formed. • Susceptibility profile to antibiotics differed when strains were exposed to cassia. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of LWT - Food Science & Technology is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.lwt.2022.113681
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Cassia (Genus)
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      – SubjectFull: Essential oils
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      – SubjectFull: Drug resistance in microorganisms
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      – SubjectFull: Exposure dose
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      – SubjectFull: Extracellular matrix
        Type: general
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      – TitleFull: Repeated sub-inhibitory doses of cassia essential oil do not increase the tolerance pattern in Listeria monocytogenes cells.
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            NameFull: Bermúdez-Capdevila, M.
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              Text: Aug2022
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              Y: 2022
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