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43334

PHYSICO-CHEMICAL PROPERTIES OF SOME LISTERIA PHAGES

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Last updated: 03 Jan 2025

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Abstract

Listeria monocytogenes is a food borne pathogenic bacteria and caused a dangerous infection of humans. Six lytic bacteriophages specific to L. monocytogenes were isolated from irrigation and sewage waters and named ØLG, ØLA, ØLM, ØLD, ØLN and ØLP. The phages were propagated, and then purified by the ultracentrifugation. Morphological properties of Listeria phages showed that the phages were tailed phages, varied in their sizes and assigned to be a member of Siphoviridae (ØLG, ØLA, ØLM) and Myoviridae (ØLN, ØLD, ØLP)   families. All Listeria phages were highly stable under different temperature conditions and its thermal inactivation point was reached to 80°C. The longevity in vitro of the phages was up to 60 days, as well as phages were active at pH values ranging from 4.0 to 12.0. Listeria phages did not lose their infectivity after exposure to UV for 90 min at 35 and 53 cm distances. Results of SDS-PAGE showed that phages had 5-6 protein fragments with molecular weights of 66, 45, 37, 35, 33 and 28 kDa distributed among the six phages.

DOI

10.21608/ajs.2019.43334

Keywords

Listeria phages, sewage water, Physico-chemical properties, SDS-PAGE

Authors

First Name

Yasmer

Last Name

Hussein

MiddleName

S.

Affiliation

Agric. Microbiology Dept., Fac. of Agric., Ain Shams Univ., P.O. Box 68, Hadayek Shobra 11241, Cairo, Egypt

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Orcid

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First Name

Samar

Last Name

El-Masry

MiddleName

S.

Affiliation

Agric. Microbiology Dept., Fac. of Agric., Ain Shams Univ., P.O. Box 68, Hadayek Shobra 11241, Cairo, Egypt

Email

samar_sayed@agr.asu.edu.eg

City

-

Orcid

0000-0003-4919-6799

First Name

Abeer

Last Name

Faiesal

MiddleName

A.

Affiliation

Basic and Applied Agric. Sciences Dept., Higher Institute for Agric. Co-Operation, Cairo, Egypt.

Email

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City

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Orcid

-

First Name

Kh.

Last Name

El-Dougdoug

MiddleName

A.

Affiliation

Agric. Microbiology Dept., Fac. of Agric., Ain Shams Univ., P.O. Box 68, Hadayek Shobra 11241, Cairo, Egypt

Email

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City

-

Orcid

-

First Name

B.

Last Name

Othman

MiddleName

A.

Affiliation

Agric. Microbiology Dept., Fac. of Agric., Ain Shams Univ., P.O. Box 68, Hadayek Shobra 11241, Cairo, Egypt

Email

-

City

-

Orcid

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Volume

27

Article Issue

1

Related Issue

6761

Issue Date

2019-03-01

Receive Date

2019-02-24

Publish Date

2019-03-01

Page Start

175

Page End

183

Print ISSN

1110-2675

Online ISSN

2636-3585

Link

https://ajs.journals.ekb.eg/article_43334.html

Detail API

https://ajs.journals.ekb.eg/service?article_code=43334

Order

16

Type

Original Article

Type Code

668

Publication Type

Journal

Publication Title

Arab Universities Journal of Agricultural Sciences

Publication Link

https://ajs.journals.ekb.eg/

MainTitle

PHYSICO-CHEMICAL PROPERTIES OF SOME LISTERIA PHAGES

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Article

Created At

22 Jan 2023