期刊
INTERNATIONAL DAIRY JOURNAL
卷 75, 期 -, 页码 83-90出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.idairyj.2017.06.007
关键词
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The chemical composition, fatty acid and protein fraction of donkey milk samples from domestic (Arcadian) breed were assessed from the 30th day to the 210th day of lactation. Total fat, proteins and minerals (Ca, Mg, K and P) were affected by the stage of lactation. Fatty acids were significantly influenced, with a decrease of 31.4% in saturated fatty acids, an increase of 53.8% in unsaturated fatty acids, a concomitant elevation of polyunsaturated fatty acids and a low n-6/n-3 ratio (2: 1). Analysis by sodium dodecylsulphate-polyacrylamide gel electrophoresis found, on average, 42.8% casein and 57.2% whey protein. The concentration of lysozyme was between 1.20 and 2.54 mg mL(-1), while the highest values were detected by the lysoplate method. Finally, low microbial content and somatic cells were also found in donkey milk with overall average log 4.4 cfu mL(-1) and log 4.8 cells mL(-1), respectively. (C) 2017 Elsevier Ltd. All rights reserved.
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