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Carcass lean-yield effects on the fatty acid and amino acid composition of Duroc pork and its technological quality after vacuum-aging

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Issue date
2018
Author
Álvarez Rodríguez, Javier
Ros Freixedes, Roger
Gol, Sofia
Henriquez Rodriguez, Eliana
Pena i Subirà, Ramona Natacha
Bosch Puig, Lluís
Estany Illa, Joan
Vilaró, Francisca
Tor i Naudí, Marc
Suggested citation
Álvarez Rodríguez, Javier; Ros Freixedes, Roger; Gol, Sofia; Henriquez Rodriguez, Eliana; Pena i Subirà, Ramona Natacha; Bosch Puig, Lluís; ... Tor i Naudí, Marc. (2018) . Carcass lean-yield effects on the fatty acid and amino acid composition of Duroc pork and its technological quality after vacuum-aging. Animal Production Science, 2018, vol. 58, p. 2335-2343. https://doi.org/10.1071/AN17070.
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Abstract
Eighty purebred Duroc castrated male pigs slaughtered at 210 days of age were used to evaluate the effect of lean yield (European Union carcass grading based on lean content; or R, O and P classes) on the fatty acid and amino acid composition of raw pork (Day 1 post-mortem), and technological meat quality after vacuum aging up to 4, 6 and 8 days. A strong relationship between slaughter weight and carcass lean-yield was observed. Carcasses graded as having a lower lean yield were fatter with higher intramuscular fat concentration, and differences in proportions of fatty acids with increased monounsaturated fatty acid and decreased polyunsaturated fatty acid percentage, but without adverse effect on ultimate pH, drip loss or colour attributes. There were no effects of carcass lean-yield on amino acid composition of raw pork, with valine being the limiting amino acid relative to lysine by ~30–35%. Vacuum aging did not reduce the shear force of raw pork, which may not be indicative of cooked pork response. The lipid oxidation had an inverse relationship with the polyunsaturated fatty acid content of each pork class, and it did not increase due to vacuum aging up to 8 days. Meat fatness did not affect its amino acid balance and technological quality (colour, drip loss, shear force and lipid stability) but modified intramuscular fat composition.
URI
http://hdl.handle.net/10459.1/65978
DOI
https://doi.org/10.1071/AN17070
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Animal Production Science, 2018, vol. 58, p. 2335-2343
European research projects
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  • Articles publicats (Ciència Animal) [666]
  • Articles publicats (Agrotecnio Center) [1328]
  • Publicacions de projectes de recerca del Plan Nacional [2948]

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