Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
권호 표지

Effect of Dietary Clay Mineral on Meat Quality of Hanwoo (Korean Cattle) Bull Beef during Refrigerated Storage

점토 광물질의 급여가 비거세 우육의 저온저장 중 품질에 미치는 영향

  • 이성기 (강원대학교 축산식품과학과) ;
  • 김용선 (강원대학교 동물자원공동연구소) ;
  • 양성운 (연변대학교 농학원) ;
  • 주명규 (강원대학교 축산식품과학과) ;
  • 박연수 (강원도 축산기술연구센터)
  • Published : 2004.09.01
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Abstract

The effect of dietary clay mineral on meat quality in M. longissimus of Hanwoo (Korean cattle) bull beef during refrigerated storage (4$^{\circ}C$) was investigated. Experimental groups were divided into control (basal diet) and CT-1.25% (basal diet + 1.25% clay mineral) groups. There was no significant differences in proximate and fatty acid compositions between control and CT-1.25% groups. The pH of control group was significantly (p<0.05) changed during storage, but CT-1.25% group was little affected by storage time. CIE a＊ (redness), chroma (C＊) values and R630-R580 were significantly (p<0.05) decreased during storage for both groups. In particular, those values decreased more rapidly in the control group. The rate of metmyoglobin accumulation during storage increased more rapidly in the control group. Therefore, discoloration in the control group was more accelerated compared to the CT-1.25% group. TBARS (thiobarbituric acid reactive substances) which represents lipid rancidity were significantly (p<0.05) lower in CT-l.25% group than in the control. Water-holding capacity (WHC) was significantly (p<0.05) increased during storage for both groups, and CT-1.25% group had significantly (p<0.05) higher WHC than control group. Consequently, feeding of clay mineral (1.25%) was effective in increasing meat color stability and WHC, and retarding lipid oxidation than did control group.

점토 광물질을 비거세 한우에 1.25%첨가 급여시 육질에 미치는 영향을 조사하였다. 실험처리구는 대조구(무첨가구)와 1.25% 점토 광물질 급여구(CT-1.25%)로 나누어 실험하였다. 일반성분과 지방산 조성은 처리구간의 유의적인 차이를 나타내지 않았으며, pH는 저장기간에 따라 유의적으로 변화하는 대조구와 달리 1.25% 점토 광물질 급여구의 PH는 저장 기간에 따른 유의적인 차이를 보이지 않고 안정적이었다. CIE a＊값, chroma값 및 R630-R580값은 모든 처리구에서 저장기간이 경과함에 따라 유의적으로 감소하는 경향을 나타내었으며(p<0.05), 특히 대조구가 저장기간이 경과함에 따라 현저한 감소 현상을 보였다. Metmyoglobin(%)의 함량은 저장기간이 경과함으로써 대조구의 menyoglobin 형성율이 현저하게 증가하여 1.25%점토 광물질 급여구에 비해 갈색 축적현상이 급속하게 진행됨을 알 수 있었다. 지질의 산패 정도를 나타내는 TBARS는 1.25% 점토 광물질 급여구가 대조구보다 유의적으로 낮은 값을 나타내어 산화 안정성을 보였다. 보수력은 모든 처리구에서 저장기간이 경과함에 따라 유의적으로 증가하는 경향을 나타내었으며(p<0.05) 1.25% 점토 광물질 급여구가 대조구에 비해 높은 보수력을 보였다. 결과적으로 1.25% 점토 광물질 급여구(CT-1.25%)의 경우 대조구에 비해 육색, 지질 산화 및 보수력에 대해 안정성을 가지는 것으로 나타났다.

Keywords

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