Journal of the East Asian Society of Dietary Life (동아시아식생활학회지)

The East Asian Society of Dietary Life (동아시아식생활학회)
권호 표지

Effects of Freezing Period and Chilling Process after Thawing on Physicochemical Properties and Palatability of Loin from Jeju Island Reared Crossbred Black Pigs

동결 기간 및 해동 후 냉장이 제주 흑돼지고기의 물리화학적, 기호적 품질에 미치는 영향

  • Moon, Yoon-Hee (Dept. of Food Science and Biotechnology, Kyungsung University)
  • 문윤희 (경성대학교 식품생명공학과)
  • Received : 2010.06.01
  • Accepted : 2010.08.24
  • Published : 2010.08.31
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Abstract

In this study, the effects of the chilling process after thawing on pork quality were investigated by comparing the physiochemical properties and palatability of the samples just after thawing(0-TP) and the other chilled at $2^{\circ}C$ for two days after thawing (2-TP). The samples used for this study were obtained from vacuum packaged frozen loin from crossbred black pigs reared on Jeju island, and frozen at $-20^{\circ}C$ for 1 month and 12 months, and then thawing them at $4^{\circ}C$ for 20 hours. In the case of loin that was thawed after freezing for 1 month, 2-TP showed a higher water holding capacity and myofibril fragmentation index, lower hardness and chewiness, as well as better juiciness and palatability than 0-TP. However, effects of chilling after thawing were not significant in the case of loin that had been frozen for 12 months.

개량흑돼지(105~110 kg)를 도축한 후 약 18시간 냉장하고 등심육을 분할하여 진공 포장하고 $-20^{\circ}C$에서 1개월 및12개월 동결한 후 각각 $4^{\circ}C$에서 20시간 해동하였다. 해동 직후의 것(0-TP)과 해동 후 $2^{\circ}C$에서 2일간 냉장한 것(2-TP)의 물리화학적 및 기호적 특성을 비교하여 해동 후 냉장이 품질에 미치는 영향을 검토하였다. 개량흑돼지 등심육을 1개월간 동결하여 해동한 경우, 해동 직후의 0-TP보다 해동 후 냉장한 2-TP가 보수력 및 근원섬유 소편화 정도가 높아지고, 경도 및 씹힘성이 낮아졌으며, 가열육의 다즙성 및 종합적 기호도가 향상되었으나(p<0.05) 12개월 동결한 등심육은 해동 후 냉장에 의한 효과가 유의적으로 크지 않았다.

Keywords

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