Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Quality Characteristics of High and Low Grade Hanwoo Beef During Storage at $1^{\circ}C$

고급 및 저급 한우육의 저장중 품질 특성

  • Jeong, Geun-Gi (Department of Animal Science, Yeungnam University) ;
  • Park, Na-Young (Faculty of Food Industrial Technology, Catholic University of Daegu) ;
  • Lee, Shin-Ho (Faculty of Food Industrial Technology, Catholic University of Daegu)
  • 정근기 (영남대학교 축산학과) ;
  • 박나영 (대구가톨릭대학교 식품산업학부) ;
  • 이신호 (대구가톨릭대학교 식품산업학부)
  • Published : 2006.02.01
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Abstract

Quality changes of first grade Hanwoo beef were compared with those of third grade Hanwoo beef to investigate effect of initial raw meat quality on maintenance of meat quality during storage for 28 days at $1\;{\pm}\;1^{\circ}C$. Crude fat content of first grade meat was higher, whereas water content was lower, than those of third grade meat. Total bacterial counts of first and third grade beef packaged with polyethylene for 21 days storage at $1\;{\pm}\;1^{\circ}C$ were 106 and $108\;CFU/cm^2$, respectively. Volatile basic nitrogen (VBN) value of first grade meats was lower than that of third grade meat during storage for 28 days at $1\;{\pm}\;1^{\circ}C$. Drip loss percents of first and third grade meats were 4.19 and 6.06% during 14 days storage at $1^{\circ}C$, respectively. L, a, and b values decreased gradually during storage regardless of meat grade, with a value of first grade meat being higher than that of third grade meat at early stage of storage at $1^{\circ}C$.

$1^+$등급과 3등급의 우육안심을 함기포장한 후 $1^{\circ}C$에서 저장하면서 이화학적, 미생물학적 품질변화를 측정하였다. 조지방의 경우 $1^+$등급 우육이 3등급 우육에 비해 높은 지방함유율을 나타내었고, 냉장중 조지방의 변화는 저장초기부터 저장 21일째까지 뚜렷한 변화는 관찰되지 않았다. 수분함량의 경우 $1^+$등급 우육이 3등급 우육에 비해 낮게 나타났으며 $1^+$등급과 3등급 우육의 저장기간 동안 수분 함량은 뚜렷한 변화를 나타내지 않았다. $1^+$등급 우육의 총균수는 저장 21일째 약 $10^6\;CFU/cm^2$ 이하를 나타낸 반면 3등급 우육은 $10^8\;CFU/cm^2$을 나타내었다. 휘발성 염기태 질소 함량(VBN)은 저장기간 동안 $1^+$등급 우육에 비해 3등급 우육이 높게 나타났다. drip 발생량은 저장 14일째 $1^+$등급, 3등급 우육 각각 4.19%와 6.06%로 3등급 우육의 drip량이 현저히 높게 나타났다. a 값과 b값은 저장 전기간 동안 $1^+$등급 우육이 3등급 우육에 비해 높은 값을 나타내었고, b 값은 저장 21일째까지 b 값은 저장기간이 경과할수록 낮아지는 경향을 나타내었으나 저장 28일째의 $1^+$등급 우육과 3등급 우육은 각각 3.83, 2.60의 b 값 을 나타내어 저장 초기의 4.42, 3.22보다는 b 값이 감소하였으나 유의적인 차이(p<0.05)는 관찰되지 않았다.

Keywords

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