Format

Send to

Choose Destination

See 1 citation found by title matching your search:

J Agric Food Chem. 2014 Jan 8;62(1):58-65. doi: 10.1021/jf4040964. Epub 2013 Dec 23.

Peptidomic profile of milk of Holstein cows at peak lactation.

Author information

1
Department of Food Science and Technology, ‡Foods for Health Institute, and #Department of Chemistry, University of California-Davis , One Shields Avenue, Davis, California 95616, United States.

Abstract

Bovine milk is known to contain naturally occurring peptides, but relatively few of their sequences have been determined. Human milk contains hundreds of endogenous peptides, and the ensemble has been documented for antimicrobial actions. Naturally occurring peptides from bovine milk were sequenced and compared with human milk peptides. Bovine milk samples from six cows in second-stage peak lactation at 78-121 days postpartum revealed 159 peptides. Most peptides (73%) were found in all six cows sampled, demonstrating the similarity of the intramammary peptide degradation across these cows. One peptide sequence, ALPIIQKLEPQIA from bovine perilipin 2, was identical to another found in human milk. Most peptides derived from β-casein, αs1-casein, and αs2-casein. No peptides derived from abundant bovine milk proteins such as lactoferrin, β-lactoglobulin, and secretory immunoglobulin A. The enzymatic cleavage analysis revealed that milk proteins were degraded by plasmin, cathepsins B and D, and elastase in all samples.

KEYWORDS:

bioactive peptides; bovine milk; peptidomics; protease

PMID:
24344900
PMCID:
PMC4067477
DOI:
10.1021/jf4040964
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for American Chemical Society Icon for PubMed Central
Loading ...
Support Center