Enzyme immunoassay for the detection of streptomycin and dihydrostreptomycin in milk
作者:
Petra Schnappinger,
Ewald Usleber,
Erwin Märtlbauer,
Gerhard Terplan,
期刊:
Food and Agricultural Immunology
(Taylor Available online 1993)
卷期:
Volume 5,
issue 2
页码: 67-73
ISSN:0954-0105
年代: 1993
DOI:10.1080/09540109309354785
出版商: Taylor & Francis Group
关键词: Aminoglycoside antibiotics;streptomycin;dihydrostreptomycin;detection;milk;enzyme immunoassay
数据来源: Taylor
摘要:
Polyclonal antisera against streptomycin were prepared by using a streptomycin‐oxime derivative coupled to bovine serum albumin for the immunization of rabbits. The specificity and sensitivity of these antibodies were tested in a competitive assay using a streptomycinenzyme conjugate (prepared by coupling a streptomycin‐hydrazone derivative to horseradish peroxidase) in a double antibody solid phase technique. The only detectable cross‐reactivity of the assay system with other aminoglycoside antibiotics and other substances similar in structure was shown to be with dihydrostreptomycin of about 148.7%. The detection limit in buffer solution was 0.6 ng ml‐1for streptomycin and 0–4 ng ml‐1for dihydrostreptomycin. Employing rapid sample preparation procedures, streptomycin and dihydrostreptomycin were detected in milk at levels as low as 6 and 0.8 ng ml‐1respectively.
点击下载:
PDF (385KB)
返 回