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首页> 外文期刊>American journal of applied sciences >Fatty Acid Content of Bovine Milkfat From Raw Milk to Yoghurt
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Fatty Acid Content of Bovine Milkfat From Raw Milk to Yoghurt

机译:从原料奶到酸奶的牛乳脂中的脂肪酸含量

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Problem statement: The present study aimed to study the evolution of fatty acid content, focusing on rumenic acid content, from raw milk to yoghurt processed from this milk. Approach: Milk samples were collected in a dairy plant in the northwest of Parana State weekly in January 2011 (Brazilian summer). It processed one truck load of 26,000 L of refrigerated type-C (whole standardized milk with a minimum of 3% fat) milk per day, mostly from the city of Lobato, Parana, produced mainly by Gir (Bos indicus) cattle raised on stargrass (Cynodon nlenfuensis var. nlenfuensis) pasture. Results: Saturated Fatty Acid (SFA) were the most abundant, particularly palmitic (16:0), stearic (18:0) and myristic (14:0). Among the Monounsaturated Fatty Acid (MUFA), Polyunsaturated Fatty Acid (PUFA) and trans fatty acid, oleic acid (18:1n-9), linoleic acid (18:2n-6), elaidic acid (t9-18:1) and c9, t11-18:2 (rumenic acid) predominated. It was detected significant differences (p<0.05) in the quantification of isomer c9, t11-18:2 of Conjugated Linoleic Acid (CLA). Raw milk had the largest content of rumenic acid (14.91±0.17 mg g~(-1) of lipids), decreasing to 6.22±0.20 after pasteurization and to 5.41±0.18 mgg~(-1) in yoghurt. Conclusion/Recommendations: It is demonstrated that pasteurization and yoghurt making affect the CLA contents.
机译:问题陈述:本研究旨在研究从生牛奶到用此牛奶加工的酸奶中脂肪酸含量的变化,重点是瘤胃酸含量。方法:2011年1月(巴西夏季),每周在巴拉那州西北部的一家乳制品厂中收集牛奶样品。它每天处理一卡车26,000升冷藏C型(全标准化牛奶,脂肪含量至少为3%)的牛奶,这些牛奶主要来自巴拉那州的洛巴托市,主要由在海gra上饲养的吉尔(Bos indicus)牛生产。 (Cynodon nlenfuensis var。nlenfuensis)牧场。结果:饱和脂肪酸(SFA)最丰富,尤其是棕榈酸(16:0),硬脂酸(18:0)和肉豆蔻酸(14:0)。在单不饱和脂肪酸(MUFA),多不饱和脂肪酸(PUFA)和反式脂肪酸中,油酸(18:1n-9),亚油酸(18:2n-6),亚麻酸(t9-18:1)和c9,t11-18:2(瘤胃酸)占主导地位。在共轭亚油酸(CLA)的异构体c9,t11-18:2的定量中检测到显着差异(p <0.05)。生乳中的瘤胃酸含量最高(14.91±0.17 mg g〜(-1)脂质),巴氏灭菌后降至6.22±0.20,酸奶中降至5.41±0.18 mgg〜(-1)。结论/建议:事实证明,巴氏消毒法和酸奶制备会影响CLA含量。

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