Meat quality comparison of beef from hanwoo supplemented with dietary Rhus verniciflua stokes meal, silicate, and chromium-methionine during refrigerated storage

초록

This study was carried out to compare the meat quality of beef from Hanwoo supplemented with dietary Rhus verniciflua Stokes (RVS) meal, silicate (Si), and chromium-methionine (Cr-Met) during refrigerated storage. The 26 mon-aged Hanwoo steers were fed basal diets containing 4% RVS, 4% RVS+400 ppm Cr-Met, 1.4% SiO2, or 0.14% SiO2+400 pprn Cr-Met for 4 men prior to slaughter. The M. longissimus from carcasses were then stored at 4 +/- 0.2 degrees C for 7 d. The crude fat content was higher in the Si and Si+Cr-Met groups (p < 0.05). The water-holding capacity (WHC) and tenderness were highest in the Si+Cr-Met group (p < 0.05). With regard to fatty acids, the polyunsaturated fatty acid (PUFA) content was lower in the Si and Si+Cr-Met groups (p < 0.05), and the monounsaturated fatty acid (MUFA) content was lowest in the Si+Cr-Met group (p < 0.05). The TBARS and MetMb contents were decreased in the Si, Si+Cr-Met, and RVS+Cr-Met groups. Regarding meat color during storage, the Si+Cr-Met group showed the highest L, a, b, C values and total color, and those of the Si and RVS+Cr-Met groups were higher than the RVS group (p < 0.05). Consequently, beef from Si-fed Hanwoo had higher fat content, color and oxidation stability, and lower PUFA content than RVS-fed beef. And beef from Si+Cr-Met-fed Hanwoo had higher WHC, tenderness and color stability, and lower MUFA content than Si-fed beef.

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