Seasonal changes and muscle type effect on the nutritional quality of intramuscular fat in Mirandesa-PDO veal |
| |
Authors: | Pestana José M Costa Ana S H Alves Susana P Martins Susana V Alfaia Cristina M Bessa Rui J B Prates José A M |
| |
Affiliation: | a CIISA, Faculdade de Medicina Veterinária, Universidade Técnica de Lisboa, Avenida da Universidade Técnica, Pólo Universitário do Alto da Ajuda, 1300-477 Lisboa, Portugalb GIRM, Instituto Politécnico de Leiria, Santuário Nossa Senhora dos Remédios, Apartado 126, 2524-909 Peniche, Portugalc Unidade de Investigação em Produção Animal, INRB, Fonte Boa, 2005-048 Vale de Santarém, Portugald REQUIMTE, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Campus Agrário de Vairão, 4485-661 Vairão, Portugal |
| |
Abstract: | The influence of slaughter season and muscle type on the detailed fatty acid composition, including conjugated linoleic acid isomers, and contents of total cholesterol and lipid-soluble antioxidant vitamins (α-tocopherol and β-carotene) in Mirandesa-PDO veal was assessed. Mirandesa purebred calves (n = 29) were raised in a traditional production semi-extensive system, slaughtered in late spring (June) or early autumn (October) and the longissimus lumborum and semitendinosus muscles were sampled for analysis. Although the lipid composition of PDO veal was only slightly affected by the slaughter season, it was markedly changed by the muscle type. However, PDO veal had values of pasture-fed cattle for lipid grass intake indicators, in both seasons and muscles. From a human health standpoint, intramuscular fat in Mirandesa-PDO veal has a high nutritional value throughout the year, with favorable ratios of n− 6/n− 3 and contents of n− 3 PUFA and α-tocopherol, as a result of the beneficial effects of grass feeding. |
| |
Keywords: | ALA α-linolenic acid BCFA branched-chain fatty acids CLA conjugated linoleic acid CVD cardiovascular diseases FAME fatty acid methyl esters IMF intramuscular fat LA linoleic acid LL longissimus lumborum muscle LC-PUFA long-chain polyunsaturated fatty acids MUFA monounsaturated fatty acids PDO Protected Designation of Origin PUFA polyunsaturated fatty acids SCD stearoyl-CoA desaturase SFA saturated fatty acids ST semitendinosus muscle TFA trans fatty acids |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|