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114323

Growth Inhibition of Aflatoxigenic Molds and Biodegradation of Aflatoxin B1 by Certain Bacterial Isolates

Article

Last updated: 22 Jan 2023

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Abstract

AFLATOXIN B1 (AFB1) is mutagenic, carcinogenic, and harmful to humans and animals. Different physical and chemical methods have been proposed to reduce mycotoxins but few have been approved for practical application. This study investigated the possible use of certain bacterial species were isolated from different agricultural soils as biological control agents against the growth of toxigenic Aspergillus flavus and Aspergillus parasiticus isolated from sorghum and peanuts as well as biodegradation of aflatoxin B1 (AFB1). Out of these 30 bacterial isolates, 6 isolates showed that have antagonistic effects against the aflatoxigenic fungi but with varying efficiencies. The six different isolates were screened for their ability to degrade AFB1. Out of 6 isolates, one isolate showed high reduction activity of AFB1. Maximum antifungal activities were observed in one isolate was identified as Staphylococcus lentus. S. lentus completely prevented the A. flavus and A. parasiticus growth and completely degraded AFB1 in Liquid Culture. LC-MS/MS analysis revealed that S. lentus resulted in a 96.54% degradation of AFB1, but no products has been detected. In practical application, it was found that S. lentus at concentration of 10 and 25mL kg-1 were completely prevented the growth of A. flavus and A. parasiticus in sorghum and peanuts, respectively, consequently no aflatoxin were produced. According to our information, this is the first study to prove that Staphylococcus lentus has the capability to inhibit the growth of Aspergillus flavus and Aspergillus parasiticus by 100% and degrading AFB1 by 96%.

DOI

10.21608/ejm.2020.37114.1166

Keywords

AFB1, <i>Aspergillus flavus, A. parasiticus</i>, Peanut, Sorghum

Authors

First Name

Reham

Last Name

Abdelkader

MiddleName

-

Affiliation

Radiation Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt

Email

reham-abdelkader@hotmail.com

City

cairo

Orcid

0000-0002-9464-3853

First Name

Hanan

Last Name

Abdelkhalek

MiddleName

-

Affiliation

Radiation Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt

Email

hanan.hassan210@gmail.com

City

cairo

Orcid

-

First Name

Ali

Last Name

Hammad

MiddleName

-

Affiliation

Radiation Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt

Email

ahammad50@yahoo.com

City

cairo

Orcid

-

First Name

Khayria

Last Name

Youssef

MiddleName

-

Affiliation

Microbiology Department, Faculty of Science, Ain Shams University, Cairo, Egypt

Email

khayriayoussef@yahoo.com

City

Cairo

Orcid

-

First Name

Dalia

Last Name

Abdou

MiddleName

-

Affiliation

Microbiology Department, Faculty of Science, Ain Shams University, Cairo, Egypt

Email

drdaliaali2013@yahoo.com

City

-

Orcid

-

Volume

55

Article Issue

1

Related Issue

19965

Issue Date

2020-12-01

Receive Date

2020-08-26

Publish Date

2020-12-01

Page Start

63

Page End

77

Print ISSN

0022-2704

Online ISSN

2357-0881

Link

https://ejm.journals.ekb.eg/article_114323.html

Detail API

https://ejm.journals.ekb.eg/service?article_code=114323

Order

6

Type

Original Article

Type Code

121

Publication Type

Journal

Publication Title

Egyptian Journal of Microbiology

Publication Link

https://ejm.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023