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首页> 外文期刊>Australian Journal of Dairy Technology >Relationship between the somatic cell count in raw milk and the casein fractions of UHT milk
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Relationship between the somatic cell count in raw milk and the casein fractions of UHT milk

机译：生乳中体细胞计数与超高温灭菌乳酪蛋白组分之间的关​​系

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摘要

The relationship between somatic cell count (SCC) in raw milk and casein fractions of 15 batches of the corresponding ultra-high-temperature (UHT) milk was examined. Raw milk was collected, pasteurised and submitted to UHT treatment. Samples of the UHT milk were taken on days 8, 30, 60, 90 and 120 of storage at room temperature and their casein fractions analysed by high performance liquid chromatography. SCC ranged from 197,000 to 800,000 cells/mL. No correlation (p>0.05) was found between SCC and K-casein concentrations in raw or UHT milks. The alpha(s2) and P-casein concentrations in raw milk were negatively correlated with SCC (p<0.05). In UHT milk, negative correlations were observed for a,1-casein (p<0.05) and beta-casein (p<0.05) on the 8th day, and for alpha S-2-casein (p<0.01) on the 60th day of storage. Results indicate that higher SSC in raw milk is associated with substantial degradation of beta-casein and alpha(s)-casein, which may lead to quality defects in UHT milk during storage. Aust. J. Dairy Technol. 63, 45-49
机译：检查了原奶中的体细胞计数（SCC）与15批次相应的超高温（UHT）牛奶中的酪蛋白级分之间的关​​系。收集原料奶，进行巴氏消毒，然后进行UHT处理。在室温下第8、30、60、90和120天采集UHT牛奶样品，并通过高效液相色谱分析其酪蛋白级分。 SCC范围从197,000至800,000细胞/ mL。在原奶或超高温灭菌牛奶中，SCC和K-酪蛋白浓度之间没有相关性（p> 0.05）。生乳中的α（s2）和P-酪蛋白浓度与SCC呈负相关（p <0.05）。在UHT牛奶中，第8天的a，1-酪蛋白（p <0.05）和β-酪蛋白（p <0.05）以及第60天的αS-2-酪蛋白（p <0.01）呈负相关。的存储。结果表明，原奶中较高的SSC与β-酪蛋白和α-酪蛋白的大量降解有关，这可能导致在储存过程中UHT牛奶的质量缺陷。澳洲J.乳业技术。 63、45-49

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