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Animal Products
Asian-Australasian Journal of Animal Sciences 2007;20(7): 1127-1134.
DOI: https://doi.org/10.5713/ajas.2007.1127    Published online June 27, 2007.
Gel Color and Texture of Surimi-like Pork from Muscles at Different Rigor States Post-mortem
Geun-Ho Kang, Han-Sul Yang, Jin-Yeon Jeong, Sang-Hoon Moon, Sun-Jin Hur, Gu-Boo Park, Seon-Tea Joo*
Correspondence:  Seon-Tea Joo,
Abstract
Gels were made from surimi-like pork (SLP) made from muscles obtained at 1, 24 and 72 h post-mortem. The SLP from pre-rigor muscle had higher pH and moisture percentage compared to in- or post-rigor muscles. Also, SLP from pre-rigor muscle showed higher concentration of water-soluble protein that was washed out during the process. Gel from post-rigor muscle exhibited higher a* and b* value, and also resulted in higher Chroma and lower hue values. The dark color of gel from post-rigor muscle was related to higher concentration of sarcoplasmic protein in SLP and denser structure in the gel matrix. SDS-PAGE showed higher intensity of the phosphorylase in the sarcoplasmic protein fraction from pre-rigor muscle. Gel from post-rigor muscle showed higher hardness and sensory firmness, and the greater firmness was related to higher concentration of protein in SLP, and a compact network with smaller pockets in the gel matrix.
Keywords: Surimi-like Pork; Gel Color; Texture; Muscle Rigor States
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