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Meat Quality and Nutritional Properties of Hanwoo and Imported Australian Beef

한우고기와 호주산 냉장수입육의 육질 및 영양성분 비교

  • 조수현 (농촌진흥청 국립축산과학원) ;
  • 성필남 (농촌진흥청 국립축산과학원) ;
  • 강근호 (농촌진흥청 국립축산과학원) ;
  • 박범영 (농촌진흥청 국립축산과학원) ;
  • 정석근 (농촌진흥청 국립축산과학원) ;
  • 강선문 (농촌진흥청 국립축산과학원) ;
  • 김영춘 (농촌진흥청 국립축산과학원) ;
  • 김종인 (농촌진흥청 국립축산과학원) ;
  • 김동훈 (농촌진흥청 국립축산과학원)
  • Received : 2011.03.03
  • Accepted : 2011.10.13
  • Published : 2011.10.31

Abstract

This study was conducted to investigate the proximate composition, meat color, Warner-Bratzler shear force (WBS), total collagen content (%), cooking loss (CL), fatty acid composition, amino acid composition, and mineral content of loin, strip loin, top round, and chuck tender Hanwoo beef and imported Australian beef. Protein content was significantly lower for strip loin and loin of Hanwoo QG $1^+$ and 1 beef when compared to that of Australian black Angus or cross beef (p < 0.05), whereas it was not significantly different for top round and chuck tender. Intramuscular fat content was higher for QG $1^+$ Hanwoo beef strip loin (15.48%) than that in Australian cross beef (8.83%) and it was also higher in loin for QG $1^+$ (17%) and 1 (15.52%) Hanwoo beef than that in Australian Angus beef (10.59%) and cross beef (9.21%) (p < 0.05). The CIE $L^*$ value was significantly higher for Australian cross beef strip loin than that of Hanwoo beef but the CIE $a^*$ value was not significantly different between the same cuts from different origins. However, CIE $b^*$ values were significantly higher for the Australian cross beef than those for four cuts of Hanwoo beef and Australian Angus beef (p < 0.05). No significant difference in WBS of loin, top round, or chuck tender was observed among the different beef sample origins except that strip loin had significant higher WBS for Australian cross beef (3.02 kg) but lower for Australian Angus beef (2.13 kg). Australian cross beef contained significantly higher palmitic acid, stearic acid, linolenic acid, but lower palmitoleic acid, oleic acid, eicosenoic acid content in strip loin, loin, and top round than those of QG $1^+$ and 1 Hanwoo beef (p < 0.05). QG $1^+$ Hanwoo beef had significant lower saturated fatty acid and higher monounsaturated fatty acid content than those in Australian cross beef (p < 0.05). Hanwoo $1^+$ beef had more glycine in top round and chuck tender, whereas Hanwoo QG 1 beef and Australian Angus beef had higher cysteine, methione, and glycine levels in strip loin and loin and valine and leucine in top round and chuck tender than the same cuts of Hanwoo $1^+$ beef (p < 0.05). No significant differences were observed for Ca, Fe, or Zn content among the different beef samples.

본 연구는 거세한우(26-28개월) $1^+$, 1등급육과 호주산 수입 흑우 및 교잡육으로부터 채끝, 등심, 우둔, 꾸리부위를 공시시료로 이용하여 원산지별 부위간의 일반성분, 육색, 전단력, 콜라겐함량, 가열감량, 지방산조성, 아미노산조성 및 무기물 함량을 비교하였다. 단백질 함량은 채끝과 등심부위는 한우고기 $1^+$, 1 등급육이 호주산 앵거스 또는 교잡종육 보다 유의적으로 높은(p<0.05) 반면에 우둔과 꾸리부위에서는 비교구간에 유의적인 차이가 없었다(p>0.05). 지방함량은 채끝부위에 있어서는 한우 $1^+$ 등급육이 15.48%로 8.83%인 호주산 교잡육보다 유의적으로 높았고, 등심 부위에서는 한우육 $1^+$, 1 등급육이 각각 17%, 15.52%로 호주산 앵거스 흑우육(10.59%) 및 교잡육(9.21%)보다 유의적으로 높았다(p<0.05). 육색 비교에서 채끝부위는 호주산 교잡종이 CIE $L^*$(백색도)이 한우고기보다 유의적으로 높았고 적색도(CIE $a^*$)은 동일한 부위내에서 비교구간에 유의적인 차이가 없었으며 CIE $b^*$(황색도)는 채끝, 등심, 우둔 및 꾸리 부위 모두에서 유의적으로 가장 높은 것으로 나타났다(p<0.05). 부위별 전단력 비교 결과 채끝부위는 호주산 교잡종이 유의적으로 가장 높았던(3.02 kg) 반면에 호주산 앵거스 흑우가 유의적으로 가장 낮았다(p<0.05). 한편 등심, 우둔 및 꾸리 부위는 전단력에서 유의적인 차이가 없는 것으로 분석되었다. 총 콜라겐 함량은 한우고기가 4개 부위 모두에서 호주산 쇠고기보다 유의적으로 더 높은 것으로 분석되었다(p<0.05) 지방산 조성에서 호주산 교잡종육이 채끝, 등심, 우둔부위에서 한우고기보다 palmitic acid, stearic acid, linolenic acid 함량이 유의적으로 높은 반면에 palmitoleic acid, vaccenic acid, eicosenoic acid 함량이 유의적으로 낮은 것으로 분석되었다(p<0.05). Oleic acid 함량은 한우고기 $1^+$, 1등급육이 호주산 교잡종육과 비교했을 때 채끝, 등심, 우둔 및 꾸리부위에서 유의적으로 더 높은 것으로 나타났다(p<0.05). 한우고기 $1^+$, 1등급육은 호주산 교잡육보다 포화지방산 함량이 낮고 단일불포화지방산 함량(MUFA) 함량이 높은 것으로 분석되었다(p<0.05). 한우고기 $1^+$ 등급육은 우둔과 꾸리부위에서 glycine 함량이 가장 높았고 한우 1 등급육은 채끝과 등심 부위에서 cystein, methionine, glycine 함량이 호주산 앵거스 흑우육 보다 유의적으로 더 높았으며, 우둔과 꾸리부위에서는 valine과 leucine 함량이 유의적으로 더 높았다(p<0.05). 무기물 조성에서 Ca, Fe, Zn 함량은 비교구간에 유의적인 차이가 없는 것으로 분석되었다(p>0.05).

Keywords

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