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Variability of urea concentration in camel milk in Kazakhstan

Variability of urea concentration in camel milk in Kazakhstan Urea is a part of non-protein nitrogen in milk. The variability of its concentration was never reported in camel milk. The present communication aimed to give some reference values on urea content in camel milk and to explore some interpretable variation factors. In 102 milk samples collected in Kazakhstan, at four seasons of the year, in four distant regions and in different species (Camelius dromedaries, Camelius bactrianus and their hybrids), urea was determined in the raw milk. The mean value of urea concentration was 81.6 ± 60.4 mg·L−1 with a range of 0–290.5 mg·L−1. The values changed significantly (P < 0.001) according to season, the highest concentration being observed in spring when the grass contained the highest soluble nitrogen. The milk urea was positively correlated to the total protein concentration in milk. On average, those values were lower than in cow milk. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Dairy Science & Technology Springer Journals

Variability of urea concentration in camel milk in Kazakhstan

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Publisher
Springer Journals
Copyright
Copyright © 2010 by Springer S+B Media B.V.
Subject
Chemistry; Food Science; Agriculture; Microbiology
ISSN
1958-5586
eISSN
1958-5594
DOI
10.1051/dst/2010025
Publisher site
See Article on Publisher Site

Abstract

Urea is a part of non-protein nitrogen in milk. The variability of its concentration was never reported in camel milk. The present communication aimed to give some reference values on urea content in camel milk and to explore some interpretable variation factors. In 102 milk samples collected in Kazakhstan, at four seasons of the year, in four distant regions and in different species (Camelius dromedaries, Camelius bactrianus and their hybrids), urea was determined in the raw milk. The mean value of urea concentration was 81.6 ± 60.4 mg·L−1 with a range of 0–290.5 mg·L−1. The values changed significantly (P < 0.001) according to season, the highest concentration being observed in spring when the grass contained the highest soluble nitrogen. The milk urea was positively correlated to the total protein concentration in milk. On average, those values were lower than in cow milk.

Journal

Dairy Science & TechnologySpringer Journals

Published: Jul 4, 2011

References