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355278

Effect of Pasteurization and Gamma irradiation on some pathogens and sensory characteristics of milk

Article

Last updated: 03 Jan 2025

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Subjects

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Tags

Food safety / meat quality

Abstract

The aim of this study was to compare between the efficiency of pasteurization and Gamma irradiation treatments for their antimicrobial effects on three important foodborne pathogens including L. monocytogenes, S. aureus and E. coli in milk. Additionally, the effect of these treatments on sensory characteristics of milk were also monitored before and after treatments. Milk samples were inoculated with the reference strains of L.monocytogenes "ATCC7644", E. coli "ATCC25922" and S. aureus "ATCC6538" with the inoculated dose of 10'Logyo cfu/ml milk (Control sample). Milk samples were subjected to pasteurization at 63°C for 30 minutes and to gamma irradiation at concentration of 2, 3, 4 and 5 kGy. A three trials based experiment was designed to each treatment and statistical analysis was performed. The: obtained results showed that pasteurization process was the most significant result as all inoculated pathogens under: study were completely eliminated. Otherwise, the organisms could not be detected any more after application of | pasteurization, while all examined samples are positive for inoculated pathogens after gamma irradiation treatments even with the highest dose of 5 KGy, the reduction increased with the increasing of irradiation dose. Moreover, the obtained results reveal that Gamma irradiation had no adverse effect on sensory characteristics of milk while pasteurization induces adverse effects. 

DOI

10.21608/vmjg.2017.355278

Keywords

Staphylococcus aureus, Escherichia coli, L. monocytogenes, pasteurization, gamma

Authors

First Name

Salwa

Last Name

Awad

MiddleName

-

Affiliation

Food Hygiene Department, Animal Health Research Institute, Giza, Egypt

Email

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City

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Orcid

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First Name

Adel

Last Name

Saudi

MiddleName

-

Affiliation

Food Hygiene Department, Faculty Veterinary Medicine, Cairo University

Email

-

City

-

Orcid

-

First Name

Khalid

Last Name

S

MiddleName

-

Affiliation

Food Hygiene Department, Animal Health Research Institute, Giza, Egypt

Email

-

City

-

Orcid

-

First Name

Dalia

Last Name

Zahran

MiddleName

-

Affiliation

National Centre for radiation Research and Technology

Email

-

City

-

Orcid

-

Volume

63

Article Issue

4

Related Issue

1472

Issue Date

2017-10-01

Receive Date

2024-05-20

Publish Date

2017-10-01

Page Start

67

Page End

75

Print ISSN

1110-1423

Online ISSN

2537-1045

Article File

VMJG_Volume 63_Issue 4_Pages 67-75.pdf

PDF . 4.7MB

Link

https://vmjg.journals.ekb.eg/article_355278.html

Detail API

https://vmjg.journals.ekb.eg/service?article_code=355278

Order

355,278

Type

Original Article

Type Code

544

Publication Type

Journal

Publication Title

Veterinary Medical Journal (Giza)

Publication Link

https://vmjg.journals.ekb.eg/

MainTitle

Effect of Pasteurization and Gamma irradiation on some pathogens and sensory characteristics of milk

Details

Type

Article

Created At

23 Dec 2024