Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2007-8-31
pubmed:abstractText
With the rapid growth of the dairy industry and the establishment of strict antimicrobial residue limits in the People's Republic of China's (PRC) milk supply, a beta-lactamase product known as "antimicrobial destroyer" was introduced into dairy production without regulatory review. We developed a method for detecting this product in milk samples based on a modified cylinder plate method. The presence of beta-lactamase is defined as a difference between the inhibitory zones of the test samples (supplemented with 25 microg/mL sulbactam plus 0.5 microg/mL penicillin G) and control samples (supplemented only with 0.5 microg/mL penicillin G) > or = 3 mm. Using this method, 77 individually packaged milk samples were randomly collected from 5 retail stores in 3 cities over a 4-month period (May to August 2006). Of the 77 samples, 49 were found to be beta-lactamase-positive. In 2 undiluted milk samples showing extremely high beta-lactamase activity, 25 microg/mL sulbactam could not inhibit penicillin G activity. Because there is a lack of safety data on beta-lactamases in milk products, these data indicated a potentially serious safety concern for the dairy industry in the PRC.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1060-3271
pubmed:author
pubmed:issnType
Print
pubmed:volume
90
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1128-32
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:articleTitle
Development of a method for the detection of beta-lactamases in milk samples.
pubmed:affiliation
National Institute for the Control of Pharmaceutical and Biological Products, Department of Antibiotics, Beijing 100050, People's Republic of China.
pubmed:publicationType
Journal Article