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Published on: July 9, 2012
Development of a rapid identification method for multiple antibiotic fermentation residues in feed based on real-time
Yuhang Fan1, Chuntao Guo2, Juan Zhang1
1Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
Analytica Chimica Acta
|May 30, 2026
Summary
New real-time PCR assays detect multiple antibiotic fermentation residues in animal feed. This rapid, accurate method targets specific genes, enhancing feed safety and public health surveillance.
Area of Science:
- Food Safety
- Molecular Biology
- Analytical Chemistry
Background:
- Antibiotic fermentation residues in animal feed pose risks like antimicrobial resistance and food contamination.
- Current analytical methods lack specificity, accuracy, and practical applicability.
- Urgent need for rapid, accurate detection of these residues in diverse feed matrices.
Purpose of the Study:
- Develop and validate real-time PCR assays for detecting multiple antibiotic fermentation residues in animal feed.
- Establish a rapid, accurate, and practical method for regulatory screening.
Main Methods:
- Designed primer-probe sets targeting core biosynthetic genes (OxyA, NeoN, AveD) for oxytetracycline, neomycin, and avermectin.
- Streamlined DNA extraction without chemical cleanup or feed pretreatment.
- Utilized real-time PCR for rapid detection.
Main Results:
- Developed three real-time PCR systems with high operational efficiency (under 2 hours).
- Achieved reliable detection of residues at 1% (w/w) in feed with no cross-amplification.
- Demonstrated robust applicability across various feed matrices (soybean meal, cottonseed meal, compound feed additives) with excellent stability (CV < 2%).
Conclusions:
- First demonstration of real-time PCR for multiple antibiotic fermentation residues in feed using strain-specific biosynthetic genes.
- Provides a rapid, sensitive, accurate, and specific molecular tool for on-site regulatory screening.
- Strengthens feed safety surveillance and public health protection against antibiotic-related hazards.
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