426549

Diversity of Toxigenic Molds and Aflatoxins in Different Varieties of Dairy Products and its Substitutes

Article

Last updated: 11 May 2025

Subjects

-

Tags

Veterinary Parasitology & Microbiology

Abstract

Although dairy products are more exposed to mold growth, dairy substitutes are also at risk. The mold contamination issue in dairy products extends beyond quality concerns, encompassing broader food safety and public health apprehensions. In this regard, investigation of mold occurrence, identification of prevailing molds, and monitoring of aflatoxins levels via ELISA were accomplished on 210 samples of different dairy products and dairy substitutes (30 of each), that were obtained from various markets in El-Fayoum province, Egypt. Molds' highest contamination level was found in Ras cheese (73.3%) with the lowest compliance to the Egyptian Standards (ES), moreover, the lowest one (33.3%) and highest acceptability was found in cream analogue samples. There was a significant difference (p<0.05) between the mean values of Ras cheese and cheese analogue samples, alongside the means of plain yogurt and flavored yogurt samples. Aspergillus spp. was the most isolated mold (54.5%), followed by other species such as Rhizopus (22.8%), Penicillium (13.1%), Mucor (4.8%), Alternaria (3.4%), and Ulocladium (1.4%). Aspergillus flavus characterization by PCR revealed that 100.0% of the isolates were confirmed, while 85.3% harbored the aflatoxin B1 aflR gene. Aflatoxin M1 was detected in all the analyzed Ras cheese, 70.0% plain yogurt, 56.7% flavored yogurt, 63.3% milk powder, and 46.7% milk-based cereals samples, with mean values of 89.05±6.21, 63.42±5.04, 48.71±2.65, 51.70±2.55, and 35.22±3.36 ng/kg, respectively. Total aflatoxins were measured in cheese analogue and cream analogue samples with mean levels of 12.32±1.58 and 7.46±0.45 ppb, respectively. A great portion of the evaluated samples contained not only varying levels of Aspergillus spp. contamination, but also their aflatoxins. This necessitates the frequent monitoring of total aflatoxins in dairy substitutes and AFM1 in dairy products. Moreover, applying strict control measures during various stages of production and processing of such products, as well as the proper handling and storage of animal feed, would reduce mold growth.

DOI

10.21608/ejvs.2025.368109.2699

Keywords

Aflatoxin M1, Aspergillus flavus, Dairy substitutes, ELISA, Milk-based cereals, Total Aflatoxins

Authors

First Name

Abdulkareem

Last Name

Adam

MiddleName

-

Affiliation

Department of Food Hygiene & Control, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.

Email

abdulkareem.adam@cu.edu.eg

City

-

Orcid

-

First Name

Salwa

Last Name

Aly

MiddleName

-

Affiliation

Department of Food Hygiene, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt

Email

salwaaly@cu.edu.eg

City

-

Orcid

-

First Name

Mena

Last Name

Saad

MiddleName

-

Affiliation

Department of Food Hygiene & Control, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.

Email

dr-mina2010@cu.edu.eg

City

-

Orcid

-

First Name

Rasha

Last Name

M.H. Sayed-ElAhl

MiddleName

-

Affiliation

Department of Mycology and Mycotoxins, Animal Health Research Institute (AHRI), Agriculture Research Centre (ARC), Giza, Egypt

Email

-

City

-

Orcid

-

First Name

Aml

Last Name

Ibrahim

MiddleName

S.

Affiliation

Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt

Email

amal_elsyaed@cu.edu.eg

City

-

Orcid

0000-0002-4117-2680

Volume

56

Article Issue

13

Related Issue

53224

Issue Date

2025-12-01

Receive Date

2025-03-13

Publish Date

2025-12-01

Page Start

141

Page End

153

Print ISSN

1110-0222

Online ISSN

2357-089X

Link

https://ejvs.journals.ekb.eg/article_426549.html

Detail API

http://journals.ekb.eg?_action=service&article_code=426549

Order

426,549

Type

Original Article

Type Code

140

Publication Type

Journal

Publication Title

Egyptian Journal of Veterinary Sciences

Publication Link

https://ejvs.journals.ekb.eg/

MainTitle

Diversity of Toxigenic Molds and Aflatoxins in Different Varieties of Dairy Products and its Substitutes

Details

Type

Article

Created At

11 May 2025