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42820

A SURVEY STUDY ON CHEMICAL, MICROBIOLOGICAL AND SENSORY PROPERTIES OF INDUSTRIAL RAYEB MILK PRODUCED IN EGYPT

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Last updated: 22 Jan 2023

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Abstract

A total of twenty-four industrial Raybe milk samples for six dairy products plants were collected from various supermarkets in Damietta and Al-Dakahlia governorates. Physicochemical, microbiological and sensorial properties of collected samples were studied at the beginning and the end of storage period (15 days). The results showed that the average values of acidity, pH and redox potential (Eh) of fresh samples ranged from 0.63 to 0.80%, 4.92-5.20 and 130.8 to 168.7 respectively. The collected fresh samples contained 10.10 - 12.56% total solids, 1.4 - 3.5% fat and 2.01 - 3.74% total protein. Increase in acidity and Eh values and decrease in pH were noticed in Raybe milk samples during storage period. Microbiological analysis revealed that probiotic bacteria were detected in all fresh Raybe milk samples and also after 15 days of storage except one sample which didn't contain B. bifidum at the end of storage stage. Counts of lactic acid bacteria and bifidobacteria gradually lowered during storage of collected samples. Coliform bacteria and moulds and yeasts were not detected over the storage period in various samples. Sensory evaluation scores were similar for different samples but samples of flavored Raybe milk gained the highest smell and taste scores.   

DOI

10.21608/jfds.2016.42820

Keywords

industrial Raybe- ABT- Bifido- Egypt

Authors

First Name

M.

Last Name

Abou-Dobara

MiddleName

I.

Affiliation

Botany Department, Faculty of Science, Damietta University, Egypt.

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City

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Orcid

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First Name

M.

Last Name

Ismail

MiddleName

M.

Affiliation

Dairy Technology Department, Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.

Email

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City

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Orcid

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First Name

Nawal

Last Name

Refaat

MiddleName

M.

Affiliation

Dairy Technology Department, Animal Production Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.

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City

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Orcid

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Volume

7

Article Issue

2

Related Issue

6711

Issue Date

2016-02-01

Receive Date

2019-07-29

Publish Date

2016-02-01

Page Start

119

Page End

124

Print ISSN

2090-3650

Online ISSN

2090-3731

Link

https://jfds.journals.ekb.eg/article_42820.html

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https://jfds.journals.ekb.eg/service?article_code=42820

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6

Type

Original Article

Type Code

886

Publication Type

Journal

Publication Title

Journal of Food and Dairy Sciences

Publication Link

https://jfds.journals.ekb.eg/

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Article

Created At

22 Jan 2023