Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 78-79, Issue -, Pages 9-13Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpba.2013.01.005
Keywords
Escherichia coli; Quantum dots (QDs); Antibody; Recovery rate
Categories
Funding
- Fundamental Research Funds for the Central Universities [02410415]
Ask authors/readers for more resources
Based on outstanding optical properties of quantum dots (QDs), a rapid and specific method was established to determine Escherichia coli (E. coli) in drugs. Rabbit anti-goat antibody was covalently conjugated to water-soluble ZnS/CdSe QDs via a cross-linking reaction and the formed conjugate was named as IgG-QDs. The bio-fluorescent probe was verified using agarose gel electrophoresis. Attributing to the affinity between goat anti-E. coli antibody and rabbit anti-goat antibody, E. coli was bio-labeled by IgG-QDs successfully, which was then contributed to detecting E. colt in drugs specifically. The results demonstrated that bioactivity and biorecognition of the antibody was not influenced by the conjugation reaction and IgG-QDs could recognize E. coli specifically. Cell recovery rates for E. coli in clomipramine hydrochloride were 82.90% and 73.64%, respectively. The entire detecting process only spent less than 4 h. The method was proved to be rapid and specific, and it could be used to detect stressed and injured cells. (C) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available