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171029

PREVALENCE OF ENTERIC BACTERIA PRODUCING TOXINS IN ICE-CREAM AND KAREISH CHEESE IN PORT-SAID CITY MARKETS

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Last updated: 05 Jan 2025

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Abstract

The present study estimate the enteric bacteria in ice-cream and Kareish cheese. The study included 120 samples of ice-cream and Kareish cheese (60 of each), collected randomly from supermarkets, shops and street vendors in different districts of Port-Said city. All samples were examined for presence of Enterobacteriaceae spp. (on Violet Red Bile Glucose agar medium). Enterobacteriaceae strains were isolated in a percentage of 60% and 80% from group B (unpacked-shop) and group C (unpacked- street vendors) of  ice-cream samples respectively, while the Enterobacteriaceae strains were isolated in a percentage of 40% and 93.3% from group B (unpacked-shop) and group C (unpacked- street vendors) of Kareish cheese samples respectively.The percentage of isolation of  E. coli  was 13.3% from group C (unpacked- street vendors) of  ice-creamsamples , while it was isolated in 6.6% from group B (unpacked-shop)  and 60% from group C (unpacked- street vendors) of Kareish cheese samples. Salmonella spp. have been isolated in a high percentage (13.3%) from group C (unpacked- street vendors) of Kareish cheese samples and more than that of ice-cream (6.6%).The confirmation of the colonies was done biochemically and were identified up to species level. E.coli isolates from Kareish cheese in group C (unpacked- street vendors) were belonged to Poly(1) O:01, O55:K59 (B5), O124:K72 (B17) and in group B (unpacked-shop) were untyped, while E.coli isolates from ice-cream in group C (unpacked- street vendors) were untyped. Salmonella isolates from ice-cream and Kareish cheese were S. Typhimurium and S. paratyphi B. Studying the E.coli and Salmonella isolates for ability to produce toxin by using infant mouse assay was carried out. The isolated serotypes constitute public health hazards to consumers.

DOI

10.21608/avmj.2013.171029

Keywords

Key words: Microbiological examination, Dairy products, enteric bacteria producing toxins, Public health. ___________________________________________________________________________________________

Authors

First Name

GIHAN

Last Name

M.O. MOHAMMED

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Affiliation

Department of Bacteriology, Port Said Laboratory, Egypt

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First Name

HANAN

Last Name

A. EL-GHIATY

MiddleName

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Affiliation

Department of Food Hygiene, Port Said Laboratory, Egypt

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First Name

EM.

Last Name

RIAD

MiddleName

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Affiliation

Department of Bacteriology, Animal Health Institute, Dokki, Giza, Egypt

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Volume

59

Article Issue

136

Related Issue

24332

Issue Date

2013-01-01

Receive Date

2012-12-02

Publish Date

2013-01-16

Page Start

16

Page End

21

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_171029.html

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https://avmj.journals.ekb.eg/service?article_code=171029

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4

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Journal

Publication Title

Assiut Veterinary Medical Journal

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

MainTitle

PREVALENCE OF ENTERIC BACTERIA PRODUCING TOXINS IN ICE-CREAM AND KAREISH CHEESE IN PORT-SAID CITY MARKETS

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Article

Created At

23 Jan 2023