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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
21/02/2014 |
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Actualizado : |
04/02/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
REALINI, C. E.; DUCKETT, S. K.; BRITO, G.; DALLA RIZZA, M.; DE MATTOS, D. |
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Afiliación : |
C. E. REALINI, Department of Animal and Dairy Science, The University of Georgia, USA; S.K. DUCKETT, Department of Animal and Dairy Science, The University of Georgia, USA; GUSTAVO WALTER BRITO DIAZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARCO DALLA RIZZA VILARO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIEL DE MATTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Effect of pasture vs. concentrate feeding with or without antioxidants on carcass characteristics, fatty acid composition, and quality of Uruguayan beef. |
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Fecha de publicación : |
2004 |
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Fuente / Imprenta : |
Meat Science, March 2004, volume 66, Issue 3, pages 567-577. |
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ISSN : |
0309-1740 |
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DOI : |
10.1016/S0309-1740(03)00160-8 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 17 March 2003 // Received in revised form 13 June 2003 // Accepted 13 June 2003.
This research was funded by the Uruguayan National Institute of Agricultural Research (INIA), Inter-American Development Bank (IDB) and the Uruguayan Ministry of Livestock, Agriculture and Fishery (MGPA). We wish to thank the Uruguayan Hereford Breeders Association, the Uruguayan Association of Natural Intensive Beef Producers (AUPCIN), the Uruguayan Technological Laboratory (LATU), Roche Ltd., and Dr. R. Radi and Dr. H. Botti for their support and cooperation in this project. |
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Contenido : |
ABSTRACT.
Thirty Hereford steers were finished either on pasture (n = 10) or concentrate (n = 20) to determine dietary and antioxidant treatment effects on carcass characteristics, fatty acid composition, and quality of Uruguayan beef. Half of the steers finished on concentrate were supplemented with 1000 I.U. vitamin E head-1 day-1 for 100 days. Postmortem vitamin C was added to ground beef (0.05% v/w) displayed for 8 days at 2 °C. Carcasses from steers finished on concentrate had greater (P < 0.05) carcass weight, conformation, degree of finishing, fat depth, and ribeye area than pasture finished animals. Carcasses from pasture-fed steers showed darker (P < 0.05) longissimus color and yellower (P <0.05) fat at 24 h postmortem than concentrate-fed. Initial longissimus Warner-Bratzler shear force (WBSF) values were similar (P >0.05) between pasture- and concentrate-fed animals. However, beef from pasture-fed cattle had lower (P < 0.05) WBSF values at 7 and 14 days postmortem. Longissimus ?-tocopherol concentrations were greater (P < 0.01) for pasture- and concentrate-fed animals that were supplemented with vitamin E compared to concentrate-fed. Steaks from pasture-fed and vitamin E supplemented cattle had similar (P > 0.05) TBARS values, which were lower (P < 0.05) than steaks from concentrate-fed steers during 21 days of display. Ground beef from vitamin E supplemented steers had the lowest TBARS values; whereas samples from pasture-fed animals had the lowest lipid stability with higher TBARS levels than other treatments. Vitamin C addition to ground beef did not (P > 0.05) reduce lipid oxidation. Vitamin E supplementation of concentrate-fed cattle had no effect (P > 0.05) on color stability of ground beef or steaks. The a* (redness) and b* (yellowness) values were higher (P < 0.05) when vitamin C was added to ground beef. Longissimus fatty acid content of concentrate-fed animals was twofold greater (P < 0.01) than pasture-fed. The percentages of C14:0, C16:0, and C18:1 fatty acids were higher (P < 0.01) in the intramuscular fat of concentrate-fed steers, whereas pasture-fed cattle showed greater (P < 0.01) proportions of C18:0, C18:2, C18:3, C20:4, C20:5, and C22:5. Total conjugated linoleic acid (CLA) and CLA isomer c9t11 were higher (P < 0.01) for pasture- than concentrate-fed cattle. Vitamin E supplementation of concentrate-fed steers increased lipid stability of ground beef and steaks, but was unable to improve color stability; whereas vitamin C addition to ground beef increased color stability without altering lipid oxidation. Finishing cattle on pasture enhanced the unsaturated fatty acid profile of intramuscular fat in beef including CLA and omega-3 fatty acids.
© 2003 Elsevier Ltd. All rights reserved. MenosABSTRACT.
Thirty Hereford steers were finished either on pasture (n = 10) or concentrate (n = 20) to determine dietary and antioxidant treatment effects on carcass characteristics, fatty acid composition, and quality of Uruguayan beef. Half of the steers finished on concentrate were supplemented with 1000 I.U. vitamin E head-1 day-1 for 100 days. Postmortem vitamin C was added to ground beef (0.05% v/w) displayed for 8 days at 2 °C. Carcasses from steers finished on concentrate had greater (P < 0.05) carcass weight, conformation, degree of finishing, fat depth, and ribeye area than pasture finished animals. Carcasses from pasture-fed steers showed darker (P < 0.05) longissimus color and yellower (P <0.05) fat at 24 h postmortem than concentrate-fed. Initial longissimus Warner-Bratzler shear force (WBSF) values were similar (P >0.05) between pasture- and concentrate-fed animals. However, beef from pasture-fed cattle had lower (P < 0.05) WBSF values at 7 and 14 days postmortem. Longissimus ?-tocopherol concentrations were greater (P < 0.01) for pasture- and concentrate-fed animals that were supplemented with vitamin E compared to concentrate-fed. Steaks from pasture-fed and vitamin E supplemented cattle had similar (P > 0.05) TBARS values, which were lower (P < 0.05) than steaks from concentrate-fed steers during 21 days of display. Ground beef from vitamin E supplemented steers had the lowest TBARS values; whereas samples from pasture-fed animals had the lowest lipid stabilit... Presentar Todo |
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Palabras claves : |
ANTIOXIDANTS; BEEF; CONCENTRATE; PASTURE. |
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Thesagro : |
GANADO DE CARNE. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 04160naa a2200265 a 4500
001 1002961
005 2019-02-04
008 2004 bl uuuu u00u1 u #d
022 $a0309-1740
024 7 $a10.1016/S0309-1740(03)00160-8$2DOI
100 1 $aREALINI, C. E.
245 $aEffect of pasture vs. concentrate feeding with or without antioxidants on carcass characteristics, fatty acid composition, and quality of Uruguayan beef.$h[electronic resource]
260 $c2004
500 $aArticle history: Received 17 March 2003 // Received in revised form 13 June 2003 // Accepted 13 June 2003. This research was funded by the Uruguayan National Institute of Agricultural Research (INIA), Inter-American Development Bank (IDB) and the Uruguayan Ministry of Livestock, Agriculture and Fishery (MGPA). We wish to thank the Uruguayan Hereford Breeders Association, the Uruguayan Association of Natural Intensive Beef Producers (AUPCIN), the Uruguayan Technological Laboratory (LATU), Roche Ltd., and Dr. R. Radi and Dr. H. Botti for their support and cooperation in this project.
520 $aABSTRACT. Thirty Hereford steers were finished either on pasture (n = 10) or concentrate (n = 20) to determine dietary and antioxidant treatment effects on carcass characteristics, fatty acid composition, and quality of Uruguayan beef. Half of the steers finished on concentrate were supplemented with 1000 I.U. vitamin E head-1 day-1 for 100 days. Postmortem vitamin C was added to ground beef (0.05% v/w) displayed for 8 days at 2 °C. Carcasses from steers finished on concentrate had greater (P < 0.05) carcass weight, conformation, degree of finishing, fat depth, and ribeye area than pasture finished animals. Carcasses from pasture-fed steers showed darker (P < 0.05) longissimus color and yellower (P <0.05) fat at 24 h postmortem than concentrate-fed. Initial longissimus Warner-Bratzler shear force (WBSF) values were similar (P >0.05) between pasture- and concentrate-fed animals. However, beef from pasture-fed cattle had lower (P < 0.05) WBSF values at 7 and 14 days postmortem. Longissimus ?-tocopherol concentrations were greater (P < 0.01) for pasture- and concentrate-fed animals that were supplemented with vitamin E compared to concentrate-fed. Steaks from pasture-fed and vitamin E supplemented cattle had similar (P > 0.05) TBARS values, which were lower (P < 0.05) than steaks from concentrate-fed steers during 21 days of display. Ground beef from vitamin E supplemented steers had the lowest TBARS values; whereas samples from pasture-fed animals had the lowest lipid stability with higher TBARS levels than other treatments. Vitamin C addition to ground beef did not (P > 0.05) reduce lipid oxidation. Vitamin E supplementation of concentrate-fed cattle had no effect (P > 0.05) on color stability of ground beef or steaks. The a* (redness) and b* (yellowness) values were higher (P < 0.05) when vitamin C was added to ground beef. Longissimus fatty acid content of concentrate-fed animals was twofold greater (P < 0.01) than pasture-fed. The percentages of C14:0, C16:0, and C18:1 fatty acids were higher (P < 0.01) in the intramuscular fat of concentrate-fed steers, whereas pasture-fed cattle showed greater (P < 0.01) proportions of C18:0, C18:2, C18:3, C20:4, C20:5, and C22:5. Total conjugated linoleic acid (CLA) and CLA isomer c9t11 were higher (P < 0.01) for pasture- than concentrate-fed cattle. Vitamin E supplementation of concentrate-fed steers increased lipid stability of ground beef and steaks, but was unable to improve color stability; whereas vitamin C addition to ground beef increased color stability without altering lipid oxidation. Finishing cattle on pasture enhanced the unsaturated fatty acid profile of intramuscular fat in beef including CLA and omega-3 fatty acids. © 2003 Elsevier Ltd. All rights reserved.
650 $aGANADO DE CARNE
653 $aANTIOXIDANTS
653 $aBEEF
653 $aCONCENTRATE
653 $aPASTURE
700 1 $aDUCKETT, S. K.
700 1 $aBRITO, G.
700 1 $aDALLA RIZZA, M.
700 1 $aDE MATTOS, D.
773 $tMeat Science, March 2004, volume 66, Issue 3, pages 567-577.
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INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
25/09/2019 |
|
Actualizado : |
25/09/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
B - 1 |
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Autor : |
LORENZO, D.; PAZ, D.; DAVIES, P.; VILA, R.; CAÑIGUERAL, S.; DELLACASSA, E. |
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Afiliación : |
DANIEL LORENZO, Universidad de la República (UdelaR)/ Facultad de Química; DANIEL PAZ, Universidad de la República (UdelaR)/ Facultad de Química; PHILIP DAVIES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROSER VILA, Universitat de Barcelona / Facultat de Farmàcia. Spain.; SALVADOR CAÑIGUERAL, Universitat de Barcelona / Facultat de Farmàcia. Spain.; EDUARDO DELLACASSA, Universidad de la República (UdelaR)/ Facultad de Química. |
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Título : |
Composition of a new essential oil type of Lippia alba (Mill.) N.E. Brown from Uruguay |
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Fecha de publicación : |
2001 |
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Fuente / Imprenta : |
Flavour and Fragrance Journal, 2001, Volume 16, Issue 5, Pages 356-359. |
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ISSN : |
0882-5734 |
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DOI : |
10.1002/ffj.1011 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 11 July 2000 / Revised 21 March 2001 / Accepted 24 March 2001. |
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Contenido : |
Abstract.
The essential oil of aerial parts of Lippia alba (Mill.) N. E. Brown cultivated in a small-scale experimental area was analysed by GC and GC-MS (quadrupole). Twenty-seven components were identified, corresponding to 93% of the total oil. The enantiomeric distribution of α-pinene, sabinene, limonene and linalool was studied by multidimensional GC-GC. The major component was linalool (55%) with an enantiomeric purity of 99% for (+)-linalool. Comparison with previous results suggested the presence of a new linalool-rich chemotype for L. alba.
Copyright © 2001 John Wiley & Sons, Ltd. |
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Palabras claves : |
Enantioselective gas chromatography; Linalool; Lippia alba (Mill.) N. E. Brown; Verbenaceae. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 01466naa a2200265 a 4500
001 1060217
005 2019-09-25
008 2001 bl uuuu u00u1 u #d
022 $a0882-5734
024 7 $a10.1002/ffj.1011$2DOI
100 1 $aLORENZO, D.
245 $aComposition of a new essential oil type of Lippia alba (Mill.) N.E. Brown from Uruguay$h[electronic resource]
260 $c2001
500 $aArticle history: Received 11 July 2000 / Revised 21 March 2001 / Accepted 24 March 2001.
520 $aAbstract. The essential oil of aerial parts of Lippia alba (Mill.) N. E. Brown cultivated in a small-scale experimental area was analysed by GC and GC-MS (quadrupole). Twenty-seven components were identified, corresponding to 93% of the total oil. The enantiomeric distribution of α-pinene, sabinene, limonene and linalool was studied by multidimensional GC-GC. The major component was linalool (55%) with an enantiomeric purity of 99% for (+)-linalool. Comparison with previous results suggested the presence of a new linalool-rich chemotype for L. alba. Copyright © 2001 John Wiley & Sons, Ltd.
653 $aEnantioselective gas chromatography
653 $aLinalool
653 $aLippia alba (Mill.) N. E. Brown
653 $aVerbenaceae
700 1 $aPAZ, D.
700 1 $aDAVIES, P.
700 1 $aVILA, R.
700 1 $aCAÑIGUERAL, S.
700 1 $aDELLACASSA, E.
773 $tFlavour and Fragrance Journal, 2001, Volume 16, Issue 5, Pages 356-359.
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