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166625

DETECTION OF ENTEROTOXIN GENES IN STAPHYLOCOCCUS AUREUS ISOLATED FROM COW MILK

Article

Last updated: 23 Jan 2023

Subjects

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Tags

Microbiology, mycology and immunology
Milk hygiene & milk product

Abstract

Staph. aureus is considered one of the main causes of food poisoning and clinical infections in different hosts. So this work intended to investigate the occurrence of enterotoxin genes and antibiotics susceptibility of Staph aureus isolated from raw and local pasteurized milk. To realize this, 125 samples of raw milk and 75 samples of local pasteurized milk were obtained from supermarkets, dairy shops and farms in Sohag Province, Egypt. These samples were subjected to bacteriological examination. The result showed that 68 out of 125 raw milk samples and 37 out of 75 local pasteurized milk samples were positive for Staphylococcus spp. on mannitol salt agar. Biochemical scheme supposed that 18 isolates of raw milk samples and 8 isolates of local pasteurized milk samples were positive for staph aureus. PCR by using nuc gene specific primer, discriminated the existence of Staph aureus DNA in 15 isolates out of 18 isolates of raw milk samples, while 7 isolates out of 8 isolates of local pasteurized milk samples showed a postive bands at 267bp. Staphylococcal enterotoxin genes were detected in 53.33% and 42.86% of Staph aureus isolates from raw and local pasteurized milk, respectively. sea and sed genes were detected in most isolates of Staph aureus while none of these isolates harbored seb and see genes. sec gene could be detected only in the raw milk isolates. The antibiotics sensitivity profile of enterotoxigenic Staph aureus was showed a high percentage of resistance to penicillin and tetracycline while all isolates were fully susceptible to vancomycin.

DOI

10.21608/avmj.2018.166625

Keywords

Milk, Staph aureus, nuc gene, Enterotoxins, Antimicrobials

Authors

First Name

HAMS

Last Name

MOHAMED

MiddleName

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Affiliation

Department of Microbiology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt

Email

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City

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Orcid

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First Name

M.W.

Last Name

ABD AL-AZEEM

MiddleName

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Affiliation

2Department of Microbiology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt

Email

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City

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Orcid

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First Name

F. ABDEL-LATIF

Last Name

WASSEL

MiddleName

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Affiliation

Animal Health Research Institute, Sohag, Egypt

Email

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City

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Orcid

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First Name

HAZEM

Last Name

AAMER

MiddleName

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Affiliation

1 Animal Hygiene Department, Faculty of Veterinary Medicine, Sohag University. Egypt.

Email

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City

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Orcid

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Volume

64

Article Issue

159

Related Issue

24309

Issue Date

2018-10-01

Receive Date

1999-11-30

Publish Date

1999-11-30

Page Start

1

Page End

11

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_166625.html

Detail API

https://avmj.journals.ekb.eg/service?article_code=166625

Order

1

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

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

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Details

Type

Article

Created At

23 Jan 2023