UTICAJ LIPOLITIČKIH PROMENA U SILAŽI NA SADRŽAJ POLINEZASIĆENIH MASNIH KISELINA U MLEČNOJ MASTI PREŽIVARA

Zbornik radova / XXVII savetovanje o biotehnologiji sa međunarodnim učešćem Pub Date : 1900-01-01 DOI:10.46793/sbt27.269dj

Nenad Đorđević, Bojan Stojanović, A. Bozickovic, Blagoje Stojković, D. Radonjić

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Abstract

The paper presents an overview of domestic and foreign research on the influence of lipolytic changes in silage on the content and the composition of milk fat. During the preparation of herbage for ensiling (wilting), some losses occur due to lipolysis and oxidation of fatty acids. During the fermentation of the ensiled mass whereby some strains of lactic acid bacteria (Lactobacillus plantarum AKU 1009a) were used as inoculants, the biohydrogenation of some PUFA occurs as well as the increase of the content of conjugated fatty acids in the silage. Based on a review of a number of experiments, the most favorable effect can be attributed to legume and grass silages, compared to corn silages. In the first place, for sure, is red clover silage, due to the partial reduction of lipolysis by polyphenol oxidase. In contrast, when corn silage is used, there is occurrence of biohydrogenation of linoleic acid in trans- 10, cis-12 CLA, which is a very strong inhibitor of milk fat synthesis.

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本文综述了国内外关于青贮中脂溶变化对乳脂含量和组成影响的研究进展。在青贮(萎蔫)牧草的制备过程中，由于脂肪酸的脂解和氧化会造成一些损失。在以植物乳杆菌AKU 1009a为接种剂的青贮体发酵过程中，部分多聚脂肪酸发生生物氢化，并使青贮物中共轭脂肪酸含量增加。根据对一些试验的回顾，与玉米青贮相比，豆科和禾本科青贮的效果最好。首先，肯定是红三叶草青贮，因为多酚氧化酶部分减少了脂肪分解。相反，在使用玉米青贮时，反式- 10、顺式-12 CLA中的亚油酸会发生生物氢化反应，这是一种非常强的乳脂合成抑制剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Zbornik radova / XXVII savetovanje o biotehnologiji sa međunarodnim učešćem

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