NDLI: Surface Acoustic Wave (SAW) Biosensor for Rapid and Label-Free Detection of Penicillin G in Milk

Content Provider	Springer Nature Link
Author	Gruhl, Friederike J. Länge, Kerstin
Copyright Year	2013
Abstract	Surface acoustic wave (SAW) biosensors were introduced for rapid and label-free detection of penicillin G in milk. This is the first time that the use of SAW biosensors for antibiotic detection is reported. Penicillin G belongs to the β-lactam antibiotics which are commonly used in human and veterinary medicine. Particularly because of the latter, the detection of antibiotics in foodstuffs of animal origin is essential. Current methods for specific antibiotic detection often require complex laboratory equipment and procedures. SAW biosensors, however, offer rapid detection of analyte concentrations with a minimum of experimental effort. They use label-free acoustic (gravimetric) detection. Owing to the small mass of antibiotics, detection via binding inhibition assay was preferred to direct detection in this work. Samples containing penicillin G were preincubated with the corresponding antibody, and SAW biosensor surfaces were coated with penicillin G epitopes. The antibody in the sample bound to the biosensor surface, unless it was inhibited by penicillin G. The assay allowed the detection of 2 ng/ml penicillin G in buffer and 2.2 ng/ml in low-fat milk. This is below the maximum residue limit of 4 ng/ml given by the European Commission for penicillin G and other β-lactam residues in food.
Starting Page	430
Ending Page	437
Page Count	8
File Format	PDF
ISSN	19369751
Journal	Food Analytical Methods
Volume Number	7
Issue Number	2
e-ISSN	1936976X
Language	English
Publisher	Springer US
Publisher Date	2013-05-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biosensors Label-free Binding inhibition assay β-Lactam antibiotics Penicillin G Surface acoustic wave Food Science Chemistry/Food Science Microbiology Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Safety Research Safety, Risk, Reliability and Quality Applied Microbiology and Biotechnology Food Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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