Author(s):
Prates, José A. M. 
; Ribeiro, Verónica ; Quaresma, Mário ; Lourenço, Marta ; Martins, Susana ; Alves, Susana ; Portugal, Ana ; Castro, Matilde ; Fontes, Carlos M. G. ; Bessa, Rui J. B. ; Alfaia, Cristina M.
Date: 2007
Persistent ID: http://hdl.handle.net/10400.5/251
Origin: Repositório da UTL
Subject(s): Meat-PDO; Fatty acids; CLA isomers; Total lipids; Cholesterol
Description
Comunicação Oral Congresso Nacional. Instituto Politécnico de Beja, Escola Superior Agrária de Beja The aim of this work was to characterise and compare the lipid cQmposition (lípid
and eholcsterol contents, fatty acid composition and conjugated linoleie acid isomers) and
nutritiona! value (PUFA/SFA and n-6/n-3 ratios) of four Portuguese mea!s with Protceted
Designation of Origin (POO; Camalentejana-PDO beel: Mertolenga-POO beef, Barrosã-POO
veal and Arouquesa-POO veal), in 1\\'0 distinct slaughter seasoos (early autUnm and late
spring). The purebred bovines were maintained according to the traditional productioo
systems following the rules established in the meat-POO product specificatioos. ln addition,
we also compared the nutritional qU31ityof illtramuscular fat in thesc meats-PDO ,vith the
meat obtained from AlentejanaxCharolais erossbrcd young bulls produced io a typical
intcnsive concentrate-based system. The results obtained for Carnalentejana-PDO beef (Meat
Science. 2006. 72, 425-436), Mertolenga-PDO bcef (Joumal of lhe Science of Food and
Agrieulture, 2006, 86, 2196-2205), Barrosã-PDO veal (Food Chemistry, 2006, 94,469-477;
Meat Science, 2007, 75,44-52) and Arouquesa-PDO veal (Meat Science, submitted), indicate
that intramuscular tàts of meats-PDO. as a result of the beneficial grass effects 00 the
eharacterislics of meat lipids, are of grcater nutritional quality than inteosively produêcd bcef
from crossbred young bulls throughout the year. However, the data suggest that beef-PDO
(Camalentejana-POO aod Mertolenga-POO) iotramuseular falorelative 10Ihat fram veal-PDO
(Barrosã-PDO veal and Arouquesa-PDO veal), depiets a 1m.vnutritional ql,lality throughout
the year. These differences may be explained by the finishing period of Alentejana and
Mertolenga purebrcd young bulls 011coneentrate, which attenuates the beneficia] effects on
the charaeteristies ofmeat fat associated with grass intake
