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170196

DETECTION OF ENTEROTOXIGENIC METHICILLIN RESISTANT STAPHYLOCOCCUS AUREUS IN DAIRY DESSERTS BY MULTIPLEX - PCR

Article

Last updated: 23 Jan 2023

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Abstract

The aim of this study is to evaluate the occurrence of methicillin-resistant Staphylococcus aureus (MRSA) in dairy desserts samples and to investigate the antimicrobial resistance and molecular characteristics of these strains using PCR. A total of 120 samples comprising sweetened whipped cream, mehallabeia, ice cream and rice with milk were randomly collected from confectioneries, dairy shops, primitive restaurants and supermarkets in Sohag city, Egypt (30 samples each) and examined for presence of S. aureus. The results revealed that S. aureus could be detected in 23.3% of sweetened whipped cream, 6.7% of mehallabeia, 16.7% of ice cream and 3.3% of rice with milk samples. The results of antibiogram testing revealed that the highest percentage 9 (7.5%) of S. aureus isolates showed a complete resistance and 4(3.3%) showed intermediate resistance. However, the lowest percentage 2(1.7%) of the isolates were sensitive to methicillin. Eight out of nine strains that showed complete resistance using antibiotic sensitivity test identified as MRSA by detection of mecA gene by PCR (five from sweetened whipped cream, one from mehallbeia and two from ice cream samples). Furthermore, some classical enterotoxins gene profile of complete resistant strain were investigated by using M-PCR. The enterotoxins were detected in four strains only, and three different toxinotypes were recorded. The most frequent ones were “sea" gene, and followed by "sed & seb" from sweetened whipped cream and ice cream samples, while no "sec" gene could be detected from all samples. It is emphasized that the presence of S. aureus and their SEs genes in dairy desserts may be regarded as a potential risk for human health.

DOI

10.21608/avmj.2015.170196

Keywords

Key words: Staph aureus, Dairy desserts, MRSA, SEs, m-PCR

Authors

First Name

M. SHAKER

Last Name

EMAN

MiddleName

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Affiliation

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

Email

milk_121970@yahoo.com

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Orcid

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Volume

61

Article Issue

145

Related Issue

24323

Issue Date

2015-04-01

Receive Date

2015-03-31

Publish Date

2015-04-01

Page Start

136

Page End

143

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_170196.html

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https://avmj.journals.ekb.eg/service?article_code=170196

Order

16

Type

Research article

Type Code

1,840

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

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

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Article

Created At

23 Jan 2023