Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effect of Feeding Periods of Dietary Rhus verniciflua Stokes on the Quality Characteristics of Hanwoo Beef during Refrigerated Storage

옻나무 급여기간이 한우육의 냉장저장 중 품질특성에 미치는 영향

  • Kang, Sun-Moon (Department of Animal Products and Food Science, Kangwon National University) ;
  • Kim, Yong-Sun (Department of Food and Nutrition, Yuhan College) ;
  • Liang, Cheng-Yun (Department of Food Science and Engineer, Yanbian National University) ;
  • Song, Young-Han (Department of Animal Resources Science, Kangwon National University) ;
  • Lee, Sung-Ki (Department of Animal Products and Food Science, Kangwon National University)
  • 강선문 (강원대학교 동물식품응용과학과) ;
  • 김용선 (유한대학 식품영양과) ;
  • 양성운 (중국 연변농학원 식품과학과) ;
  • 송영한 (강원대학교 동물자원과학) ;
  • 이성기 (강원대학교 동물식품응용과학과)
  • Published : 2008.10.31
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Abstract

This study was carried out to investigate the effect of feeding periods of dietary Rhus verniciflua Stokes (RVS) on the quality characteristics of Hanwoo beef during refrigerated storage. Hanwoo steers were fed a 4% RVS-contained diet for 0 (control), 3, 4, 5, or 6 mon prior to slaughter (28 mon of age). The M. semitendino년 from carcasses were stored at $3{\pm}0.2^{\circ}C$ for 7 d. The crude fat content was lower in the 4 and 5 mon groups than in the other groups (p<0.05), however the crude protein content and water-holding capacity (WHC) were higher in the 4 and 5 mon groups than in the other groups (p<0.05). The monounsaturated fatty acid (MUFA) content was higher in the 3, 4, and 5 mon groups than in the other groups (p<0.05). During storage. the TBARS content was reduced in the RVS groups, and the MetMb content showed slower accumulation in the 3, 4, and 5 mon groups than in the other groups. With regard to meat color, the 3, 4, and 5 mon groups had higher L, a, and C values than the other groups until 7 d, and in particular, the a value at 7 d was the highest in the 4 mon group (p<0.05). Consequently, the beef from 4% RVS-fed Hanwoo for 4-5 mon was effective at improving the WHC, MUFA content, and color stability relative to the other beef.

본 연구는 옻나무 급여기간이 한우육의 냉장저장 중 품질특성에 미치는 영향을 구명하고자 실시하였다. 거세한우들에게 옻나무가 4% 첨가된 사료를 도축전 0(대조구), 3, 4, 5 및 6개월 동안 급여하여 모두 동일하게 28개월령에 도축하였다. 공시재료는 우둔(M. semitendinosus) 부위를 $3{\pm}0.2^{\circ}C$에서 7일 동안 저장하였다. 조지방 함량은 4 및 5개월 급여구들이 다른 급여구들에 비해 낮았으나(p<0.05), 조단백질 함량 및 보수력은 높았다(p<0.05). 지방산 조성은 3, 4 및 5개월 급여구들의 단가불포화지방산 함량이 다른 급여구들보다 높았다(p<0.05). 저장 중 TBARS는 옻나무 급여구들에서 억제되었으며, MetMb은 3, 4 및 5개월 급여구들이 다른 급여구들에 비해 서서히 축적되었다. 표면육색은 3, 4 및 5개월 급여구들이 저장 7일까지 다른 급여구들보다 L값, a값 및 C값을 높게 유지하였으며, 특히, 저장 7일째의 a 값은 4개월 급여구가 가장 높았다(p<0.05). 결론적으로 한우에게 옻나무 4%사료를 4-5개월 동안 급여했을 때 다른 급여기간들보다 쇠고기의 보수력, 단가불포화지방산 함량 및 색택 향상에 효과적이었다.

Keywords

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