The detailed sugar sequences of the two main carbohydrate portions of cow kappa-casein were established by enzymic and chemical methods and by mass spectrometry. The sugar sequences correspond to widespread sugar parts occurring in many glycoproteins.
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http://dx.doi.org/10.1016/0005-2795(79)90409-4 | DOI Listing |
J Anim Sci
March 2025
College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China.
Under current dairy cow feeding conditions, the conversion efficiency of dietary nitrogen into milk protein is less than 30%. A thorough understanding of amino acid (AA) uptake and utilization in mammary in response to AA supply is essential for accurately modeling nutritional requirements. This study utilized bovine mammary epithelial cells (BMEC) as a model to investigate the effects of increasing total essential amino acid (EAA) concentrations (0.
View Article and Find Full Text PDFInt J Mol Sci
February 2025
Polish Federation of Cattle Breeders and Dairy Farmers in Warsaw, 00-515 Warsaw, Poland.
In view of the threat to local breeds resulting from intensive animal production, many studies are conducted in search of arguments confirming their importance in food production. In the case of milk production, not only is its quantity important, but its quality is as well, including its chemical composition. Particular focus has recently been placed on the casein proteins beta-casein () and kappa-casein (), due to their potential impact on human health or on the suitability of milk for cheese production.
View Article and Find Full Text PDFCells
February 2025
Servicio de Bioquímica-Investigación, Hospital Universitario Ramón y Cajal, IRYCIS, 28034 Madrid, Spain.
Cow's milk allergy (CMA) is the most common food allergy in infants. This study aimed to identify peptide biomarkers predictive of tolerance in a Spanish population of children with CMA. We investigated specific IgE and IgG4 binding to sequential epitopes of the five major CM allergens (α-s1-, α-s2-, β-, and κ-caseins as well as β-lactoglobulin) using a microarray-based immunoassay.
View Article and Find Full Text PDFFood Chem
March 2025
State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China; School of Food Science and Technology, Nanchang University, Nanchang 330047, China; Jiangxi Province Key Laboratory of Food Allergy, Nanchang 330047, China; Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, China. Electronic address:
In this study, the pitcher fluid proteases from Nepenthes × miranda were researched as a novel protease resource due to their cleavage specificity and ability to reduce the allergenicity of cow's milk proteins. We found that these proteases are particularly efficient at the P1 position with K, L, V, S, I, and R residues and exhibit similar preferences to amino acid residues at the P1' position. It is concluded that P1 is responsible for specificity of pitcher fluid proteases, while P1' tends to show their broadness when hydrolyzation happens.
View Article and Find Full Text PDFAnn Pediatr Endocrinol Metab
February 2025
Midwifery Program, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
Purpose: Previous studies have suggested that milk consumption can promote growth in children. However, limited studies have been done on the effects of various cow milk varieties, especially β-Casein A2 milk. This study aims to investigate the effect of β-Casein A2 cow milk supplementation on physical growth, inflammation, growth, and metabolism hormonal profiles in stunted children.
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