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首页> 外文期刊>Archiv fur Lebensmittelhygiene >Effect of individual quarter milking with periodic air intake on free fatty acids (FFA) in the milk of dairy cows
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Effect of individual quarter milking with periodic air intake on free fatty acids (FFA) in the milk of dairy cows

机译：定期进风的四分之一挤奶对奶牛牛奶中游离脂肪酸（FFA）的影响

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摘要

Free fatty acids (FFA) reduce the quality of milk and dairy products by generating a rancid and soapy taste. They are produced by the spontaneous or induced enzymatic hydrolysis of milk fat. Induced lipolysis has its origin in the mechanical stressesproduced in milk by pumping the milk, and by the milking process itself. In this study, the effect of the milking system, specifically MultiLactor, on the resulting concentration of FFA was examined.The MultiLactor is an individual quarter-milking system with periodic air intake and sequential pulsation, designed to be used in conventional milking parlours.The experimental design included testing 40 milk samples at two different flow rates. It was found that milking with the MultiLactor caused an increase in the concentration of FFA in fresh milk. The FFA increase was higher for a flow rate of 1 l/min compared with a flow rate of 3 l/min. Based on the data obtained, the MultiLactor generates no higher increase in FFA than that found when using other milking systems.
机译：游离脂肪酸（FFA）会产生酸败和肥皂味，从而降低牛奶和乳制品的质量。它们是由乳脂的自发或诱导酶水解产生的。诱导的脂肪分解起源于通过泵送牛奶以及挤奶过程本身在牛奶中产生的机械应力。在这项研究中，检查了挤奶系统（特别是MultiLactor）对最终FFA浓度的影响.MultiLactor是一个具有周期性进气和顺序脉动的独立四分之一挤奶系统，旨在用于常规挤奶厅。实验设计包括以两种不同的流速测试40个牛奶样品。已发现用MultiLactor挤奶会导致新鲜牛奶中FFA的浓度增加。与流速为3 l / min相比，流速为1 l / min时FFA的增加更高。根据获得的数据，与使用其他挤奶系统时相比，MultiLactor的FFA增加不会更高。

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