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57332

Development of a Novel Genetically Modified Bioluminescent Bacteria-Based Assay for Detection of Fluoroquinolones in Animal Derived Foods (Abstract)

Article

Last updated: 22 Jan 2023

Subjects

-

Tags

ANIMAL PRODUCTION

Abstract

Fluoroquinolones (FQNs) are broad-spectrum antibacterial agents widely used in animal husbandry and aquaculture. The residues and antimicrobial resistance of such antibiotics are the major public health concern. In order to realize multi-analyte detection of FQN residues, a genetically modified bacterium, E. coli pK12 harboring plasmid pRecAlux3, was constructed in this study to develop a bioluminescent bacteria-based assay (BLBA) for the detection of FQNs in animal derived foods. This assay was based on the principle of induction of SOS response by FQNs via inducing the recA promoter-fused luciferase reporter gene existing on the plasmid pRecAlux3. E. coli pK12 was able to recognize 11 FQNs, including difloxacin, enrofloxacin, ciprofloxacin, sarafloxacin, norfloxacin, danofloxacin, ofloxacin, pefloxacin, lomefloxacin, marbofloxacin and orbifloxacin. This method could be applied to 11 edible tissues, including milk, fish muscle, the muscles, livers and kidneys of cattle, chickens and pigs, with very simple and rapid sample extraction procedure using only phosphate-buffered saline. The limits of detection of the FQNs were between 12.5 and 100 μg kg-1, all of which were lower than the maximum residue limits. Most of the recoveries of FQNs were in the range of 60 to120% and the inter-assay coefficients of variation were less than 30%. This method confirmed by HPLC is reliable and can be used as both screening test and semiquantitative assay, when the identity of a single type of FQN is known.

DOI

10.21608/assjm.2018.57332

Keywords

Fluoroquinolones (FQNs), Animal Derived Foods, bioluminescent bacteria

Authors

First Name

Guyue

Last Name

Cheng

MiddleName

-

Affiliation

College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China

Email

chengguyue@mail.hzau.edu.cn

City

-

Orcid

-

Volume

56

Article Issue

4th ICBAA

Related Issue

8694

Issue Date

2018-04-01

Receive Date

2018-03-06

Publish Date

2018-04-01

Page Start

77

Page End

78

Print ISSN

1110-0419

Link

https://assjm.journals.ekb.eg/article_57332.html

Detail API

https://assjm.journals.ekb.eg/service?article_code=57332

Order

17

Type

Original Article

Type Code

841

Publication Type

Journal

Publication Title

Annals of Agricultural Science, Moshtohor

Publication Link

https://assjm.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023