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Raustein, Trine, 2003. Effekt av myrsyra och beta-laktamas på penicillin- och S. aureus-halt i mjölk till kalvar. SLU, Dept. of Obstetrics and Gynaecology, Uppsala. Uppsala: SLU, Dept. of Obstetrics and Gynaecology

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Abstract

A sample of milk inoculated with S. aureus was treated with penicillin, and Antipen (a new commercial product containing penicillinase) was added. To another sample with S. aureus and penicillin, formic acid to pH 5 was added, and to yet another sample, a combination of formic acid and Antipen was added. Controls with no penicillin were treated in the same way. All samples were cultured in room temperature. Bacterial culture on blood agar plates were done, and the samples were analysed to see whether penicillin remained. After 3 hours with Antipen, the penicillin was gone in all samples. S. aureus did not grow in the milk with penicillin only. In the milk with formic acid only, there was a slightly growth after 24 hours. In the milk with penicillin and formic acid, the bacteria grew to some extent, and in the samples with milk only, or with penicillin and Antipen, the bacterial growth was considerable. In the samples with penicillin, Antipen and formic acid, the same result as in the sample with formic acid only, was seen.

Main title:Effekt av myrsyra och beta-laktamas på penicillin- och S. aureus-halt i mjölk till kalvar
Authors:Raustein, Trine
Supervisor:Ekman, Torkel
Examiner:UNSPECIFIED
Series:Examensarbete / Sveriges lantbruksuniversitet, Fakulteten för veterinärmedicin och husdjursvetenskap, Veterinärprogrammet
Volume/Sequential designation:2003:20
Year of Publication:2003
Level and depth descriptor:Other
Student's programme affiliation:3050A Veterinary Medicine Programme (admitted before July 1, 2007) 330 HEC
Department:(VH) > Dept. of Obstetrics and Gynaecology
Keywords:penicillin, S.aureus, myrsyra, beta-laktamas, mjölk
URN:NBN:urn:nbn:se:slu:epsilon-s-8303
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-8303
Subjects:Miscellaneous animal disorders
Animal feeding
Feed composition
Language:Swedish
Deposited On:26 Oct 2017 10:45
Metadata Last Modified:26 Oct 2017 10:45

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