Distinct fatty acid composition of some edible by-products from bovines fed high or low silage diets

被引：7
|
作者：
Alfaia, Cristina M. [1 ]
Alves, Susana P. [1 ]
Pestana, Jose M. [1 ,2 ]
Madeira, Marta S. [1 ]
Moreira, Olga [3 ]
Santos-Silva, Jose [3 ]
Bessa, Rui J. B. [1 ]
Toldra, Fidel [4 ]
Prates, Jose A. M. [1 ]
机构：
[1] Univ Lisbon, CIISA, Fac Med Vet, Lisbon, Portugal
[2] Ctr Univ Univ, UNIVATES, Lajeado, RS, Brazil
[3] Inst Nacl Invest Agr & Vet, UIPA, Vale De Santarem, Portugal
[4] Inst Agroquim & Tecnol Alimentos, Valencia, Spain
来源：
FOOD SCIENCE AND TECHNOLOGY INTERNATIONAL | 2017年 / 23卷 / 03期
关键词：
Edible by-products; fatty acids; conjugated linoleic acid isomers; bulls; diet; silage; CONJUGATED LINOLEIC-ACID; CLA ISOMER DISTRIBUTION; MEAT QUALITY; BEEF; TISSUE; LIPIDS; MUSCLE; INNOVATIONS; EMPHASIS; HEALTH;
D O I：
10.1177/1082013216674137
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In the present study, it was hypothesized that the incorporation of fatty acids is distinct among ruminant tissues and that it could be modulated by diet composition. To test this hypothesis, fatty acid composition, including conjugated linoleic acid isomers, of the most relevant beef by-products (brain, heart, kidney, liver, pancreas and tongue) from young bulls those fed distinct silage levels was assessed. Data indicated a large variation in fatty acid profile and conjugated linoleic acid composition among edible by-products. The most abundant fatty acids were C16:0 (kidney), C18:0 (heart and liver) and C18:1c9 (brain, pancreas and tongue) followed by C20:4n-6, except in brain (C22:6n-3 predominates). Brain, as shown by principal component analysis, presents a distinct fatty acid composition compared to the other beef by-products analysed. In addition, high silage diet relative to low silage diet promoted an increase of n-3 polyunsaturated fatty acid, t11,t13 and t11,c13 conjugated linoleic acid in heart, kidney, liver and pancreas. Overall, the data suggested that beef by-products had, in general, high contents of cholesterol, saturated fatty acid and trans fatty acid, as well as high levels of conjugated linoleic acid. Therefore, from a nutritional point of view they are recommended only in small amounts as part of a balanced diet.
引用
收藏
页码：209 / 221
页数：13
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