한우 성별에 따른 2등급 소분할 부위의 pH, 일반성분 및 육색 특성
Proximate Composition and Meat Color Properties of Quality Grade 2 Hanwoo Beef by Gender
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본 연구는 한우의 성별에 따른 소분할 부위별 pH, 일반성분 및 육색을 조사하고자 한우 15두(암소 5두, 수소 5두 및 거세우 5두)를 도축한다음 등급 판정을 한 후 39개 소분할 부위를 발골하여 육질 특성을 분석하였다. 소분할 부위별 pH는 5.52~6.25를 나타내었으며, 대체로 거세우에서암소와 수소에 비해 높은 값을 나타내었다. 수분, 지방, 단백질 함량은 소분할 부위와 성별에 따른 유의적인 차이를 나타내었다(p<0.05). 수소와거세우의 앞사태 부위에서 가장 높은 수분함량을 나타내었다(p<0.05). 지방함량은 거세우의 차돌박이 부위에서 가장 높았으며 다음으로 암소의업진살, 암소, 수소 거세우의 본갈비 순이었다. 콜라겐함량은 암소와 거세우는 부위에 따른 유의적인 차이가 나타나지 않았다(p>0.05). 암소와 거세우의차돌박이 부위는 높은 명도 값을 나타내었으며, 암소와 수소의 차돌박이 부위는 낮은 적색도 값을 나타내었다(p<0.05). 황색도는 암소, 수소 및거세우의 차돌박이 부위에서 가장 높은 값을 나타내었다(p<0.05). 색도는 암소, 수소 및 거세우는 홍두깨살 부위에서 가장 높았으며, 암소와 거세우는업진안살에서 가장 낮은 값을 나타내었다(p<0.05). 2등급 한우고기의 수분함량은 수소가 높고, 지방함량은 암소가 높으며, 거세우는 높은 pH 값과낮은 명도 값을 나타내었다.
Abstract
This study was to investigate meat quality by sub-primal cuts in Hanwoo cows, bulls and steers. Experimental animals comprised 5 cows, 5 bulls, and 5 steers. After slaughter, they were graded at 24h post-mortem according to the Korean carcass grading system. The pH of sub-primal cuts ranged from 5.52 to 6.25, in which steers showed generally higher pH than cows and bulls. Moisture, fat and protein content was significantly different with sub-primal cuts and gender (p<0.05). Bulls and steers of fore shank had the significantly higher moisture contents among sub-primal cuts (p<0.05). The highest fat content was found in the brisket point end-deckle off of steers, followed by short plate of cows, ribs (1st-13th) of cows, bulls and steers. There was no significant difference in collagen content of sub-primal cuts at cows and steers (p>0.05). Bulls and steers of brisket point end-deckle off had the significantly higher lightness, whereas cows and bulls of brisket point end-deckle off had the significantly lower redness among sub-primal cuts (p<0.05). The highest yellowness was found in the brisket point end-deckle off of cows, bulls and steers (p<0.05). Eye of round of cows, bulls and steers were highest and inside skirt of cows and steers was lowest in hue values when compared to the other sub-primal cuts(p<0.05). In conclusion, moisture content was higher in bulls, fat content was higher in cows, steers had higher pH values and lower lightness when they were compared to among gender.
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