title: Detection of sulfa drugs and antibiotics in milk.
abstract: A disc assay method for testing sulfa drugs and antibiotics in milk was developed wherein Bacillus megaterium ATCC 9855 was used as the test organism and Mueller-Hinton agar was used as the test substrate. Incubation was at 37 C for 4 to 5 hr. The test procedure is an improvement over the Bacillus subtilis-Antibiotic Medium No. 1 method, as described in Standard Methods for the Examination of Dairy Products, in that it is sensitive to eight sulfa drugs and to bacitracin without a significant change in sensitivity to eight other antibiotics commonly used for mastitis therapy.
authors.affiliation: Division of Microbiology, Food and Drug Administration, Cincinnati, Ohio 45226.
authors.forename: R B
authors.initials: RB
authors.lastname: Read
authors.forename: J G
authors.initials: JG
authors.lastname: Bradshaw
authors.forename: A A
authors.initials: AA
authors.lastname: Swartzentruber
authors.forename: A R
authors.initials: AR
authors.lastname: Brazis