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. 1988 Jun 1;29(2):145–150. doi: 10.1186/BF03548364

Milk Plasmin, Antitrypsin, N-Acetyl-β-D-Glucosaminidase and Bacterial Growth in Lactoserum during the Early Post Partum Period

Mjölk plasmin, antitrypsin, N-acetyl-β-D-glucosaminidase och bakterietillväxt i lactoserum den första perioden postpartum

Satu Pyörälä 1,✉, Liisa Kaartinen 1
PMCID: PMC8152579  PMID: 2975920

Abstract

The activities of plasmin, N-acetyl-β-d-glucosaminidase (NAGase) and antitrypsin in milk were determined during 1 week post partum. The concentration of NAGase and antitrypsin in milk decreased significantly during this period. A slight decrease in plasmin activity was also seen. Replication rates of E. coli and S. aureus in lactoserum were also determined. Both test bacteria showed a tendency for increasing growth rates towards the end of the period. Growth of E. coli was significantly (p < 0.01) enhanced in day 2 samples as compared with samples collected during the first day post partum.

Keywords: cow, lactation, milk enzymes, S. aureus, E. coli

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