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Characterization of Nutritional Value for Twenty-one Pork Muscles

  • Kim, J.H. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Seong, P.N. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Cho, S.H. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Park, B.Y. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Hah, K.H. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Yu, L. H. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Lim, D.G. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Hwang, I.H. (Department of Animal Resources and Biotechnology, Chonbuk National University) ;
  • Kim, D.H. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Lee, J.M. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA) ;
  • Ahn, C.N. (Quality Control and Utilization of Animal Products Division, National Institute of Animal Science, RDA)
  • Received : 2007.04.12
  • Accepted : 2007.07.28
  • Published : 2008.01.01

Abstract

A study was conducted to evaluate nutritional value for twenty-one pork muscles. Ten market-weight crossbred pigs (five gilts and five barrows) were used for evaluating proximate chemical composition, cholesterol, total iron, calorie and fatty acid contents. As preliminary analysis revealed no noticeable sex effect, pooled data from both sexes were used for the final analysis. M. rectus femoris had the highest moisture content, while m. latissimus dorsi was lowest in moisture content (p<0.05). Protein content was highest for m. longissimus dorsi and lowest for m. supraspinatus (p<0.05). The tensor fasciae and latissimus dorsi muscles contained the highest intramuscular fat (p<0.05), while rectus femoris, adductor and vastus lateralis were lowest in intramuscular fat content. When simple correlations between chemical values were computed for the pooled dataset from all muscles, intramuscular fat had significant (p<0.05) negative linear relationships with moisture (r = -0.85) and protein (r = -0.51) contents. Calorie levels were not significantly affected by fat content, while rectus femoris and latissimus dorsi muscles showed lowest and highest calorie contents, respectively (p<0.05). Polyunsaturated fatty acid content was highest (p<0.05) for both m. adductor and m. rectus femoris, while it was lowest for m. longissimus dorsi. Collectively, the current study identified a large amount of variation in nutritional characteristics between pork muscles, and the data can be used for the development of muscle-specific strategies to improve eating quality of meats and meat products.

Keywords

Pork, Muscles;Nutritional Characteristics

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