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* |
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Correspondence:
Seon-Tea Joo, |
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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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