The aim of the study was to examine the effect of dietary supplementation of isomerized poppy seed oil (IPO) enriched with conjugated dienes of linoleic acid (CLA) on cow and sheep milk parameters (fat content, fatty acid profile, Δ⁹-desaturase index, and atherogenic index). The process of poppy seed oil alkaline isomerization caused the formation of CLA isomers with cis-9,trans-11, trans-10,cis-12, and cis-11,trans-13 configurations in the amounts of 31.2%, 27.6%, and 4.1% of total fatty acids (FAs), respectively. Animal experiments were conducted on 16 Polish Holstein Friesian cows (control (CTRL) and experimental (EXP), n = 8/group) and 20 East Friesian Sheep (CTRL and EXP, n = 10/group). For four weeks, animals from EXP groups received the addition of IPO in the amount of 1% of dry matter. Milk was collected three times: on days 7, 14, and 30. Diet supplementation with IPO decrease milk fat content (p < 0.01). Milk fat from EXP groups had higher levels of polyunsaturated fatty acids, including FAs with beneficial biological properties, that is, CLA and TVA (p < 0.01), and lower levels of saturated fatty acids, particularly short- (p < 0.01) and medium-chain FAs (p < 0.05). The addition of IPO led to a decrease in the atherogenic index.

中文翻译：

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富含 CLA 的异构罂粟籽油对牛奶和羊奶的脂肪水平和脂肪酸谱的影响。


本研究的目的是探讨膳食补充剂富含亚油酸共轭二烯 (CLA) 的异构化罂粟籽油 (IPO) 对牛奶和羊奶参数（脂肪含量、脂肪酸谱、Δ ⁹ -去饱和酶指数）的影响和致动脉粥样硬化指数）。罂粟籽油碱性异构化过程中形成顺式-9、反式-11、反式-10、顺式-12、顺式-11、反式-13构型的CLA异构体，含量分别为31.2%、27.6%、分别占总脂肪酸 (FA) 的 4.1% 和 4.1%。动物实验在 16 头波兰荷斯坦弗里斯兰牛（对照（CTRL）和实验（EXP）， n = 8/组）和 20 只东弗里斯兰羊（CTRL 和 EXP， n = 10/组）上进行。在四个星期内，来自 EXP 组的动物接受添加干物质 1% 的 IPO。收集乳汁 3 次：第 7 天、第 14 天和第 30 天。饮食中添加 IPO 会降低乳脂含量 ( p < 0.01)。 EXP 组的乳脂具有较高水平的多不饱和脂肪酸，包括具有有益生物特性的 FA，即 CLA 和 TVA ( p < 0.01)，以及较低水平的饱和脂肪酸，特别是短脂肪酸 ( p < 0.01) 和中脂肪酸链 FA ( p < 0.05)。 IPO的加入导致动脉粥样硬化指数下降。