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219537

INFLUENCE OF ESSENTIAL OILS ON THE VIABILITY OF LISTERIA MONOCYTOGENES

Article

Last updated: 05 Jan 2025

Subjects

-

Tags

Laboratory investigation
Microbiology, mycology and immunology
Milk hygiene & milk product

Abstract

The present investigation was applied to study the influence of cinnamon (C), rosemary (R) and thyme (T) essential oils (EOs) on the viability of Listeria monocytogenes, in which, a total of 225 cheese samples (Tallaga, Bramily and Ras cheese, 75 each) were collected from different dairy markets and shops in Assiut city, Egypt for the isolation of L. monocytogenes. The isolates were identified and examined for 16S rRNA as positive for L. monocytogenes. The obtained results showed that Listeria spp. could be detected in 66.2% of the examined samples, while L. monocytogenes was in 17.6%. After that, the minimum inhibitory concentration (MIC) of the prepared cinnamon EO (CEO), rosemary EO (REO) and thyme EO (TEO) was detected against the isolated L. monocytogenes. Samples of Tallaga cheese were manufactured using MIC of the 3 prepared EOs separately, and the influence of EOs was done by agar well diffusion method and showed the MIC as 1.56% for CEO, 3.125% for REO and TEO. In conclusion, the CEO was the most effective against L. monocytogenes after Tallaga cheese manufacture although the unpleasant sensory quality of the manufactured cheese with the 3 oils, in which, the count of L. monocytogenes was 6.3 log10 at 0 h and then was 2.7 log10 after 1st week.

DOI

10.21608/avmj.2022.113618.1046

Keywords

essential oil, Listeria monocytogenes, Cinnamon, rosemary, thyme

Authors

First Name

MARY

Last Name

SOBHY

MiddleName

-

Affiliation

Department of Food Hygiene, Animal Health Research Institute, Agriculture Research Center, Egypt

Email

dr.marysobhy@gmail.com

City

assiut

Orcid

-

First Name

MOHAMMED

Last Name

SAYED

MiddleName

-

Affiliation

Department of Food Hygiene, Faculty of Veterinary Medicine, Assiut University, Egypt.

Email

dr.mohammedsayed@yahoo.com

City

assiut

Orcid

-

First Name

ELSHERIF

Last Name

WALAA

MiddleName

-

Affiliation

Animal Health Research Institute, Food Hygiene, Assiut Regional Lab., Egypt.

Email

sch_qana@yahoo.com

City

-

Orcid

-

Volume

68

Article Issue

172

Related Issue

31327

Issue Date

2022-01-01

Receive Date

2021-12-29

Publish Date

2022-01-01

Page Start

78

Page End

87

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_219537.html

Detail API

https://avmj.journals.ekb.eg/service?article_code=219537

Order

7

Type

Research article

Type Code

1,840

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

https://avmj.journals.ekb.eg/

MainTitle

INFLUENCE OF ESSENTIAL OILS ON THE VIABILITY OF LISTERIA MONOCYTOGENES

Details

Type

Article

Created At

23 Jan 2023