압력으로 박신한 굴 생산성능과 관능평가 분석
Analysis of production performance and sensory evaluation for shucking o yster using pressure
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초록
초고압 굴 껍질 자동분리 기계를 사용하여 박신 압력과 압력 유지시간, 굴 채묘방법, 굴 양식지역이 미치는 완전 박신율과 알굴에 대한 관능평가로 다음과 같은 것을 알 수 있었다. 첫째, 목표 압력별 도달시간은 180 MPa에서 240 MPa 구간에서는 2.2~2.4 MPa/sec. 압력 상승속도를 가지고, 압력용기 내부의 압력처리 전과 후의 해수온도는 24~27℃ 범위에서 0.5~1.7℃ 차이가 있었지만 특이한 해수온도 증가나 감소현상은 없었다. 둘째, 압력 유지시간없이 박신 압력만을 증가시켰을 때, 2매의 굴 껍질이 개방되고 육질이 매끄럽게 박리되는 임계 박신압력이 200~220 MPa구간에 존재할 것으로 사료되며, 임계 박신압력에 도달하면 밀폐된 용기내의굴 시료는 약 40% 정도 박신될 것으로 예측된다. 셋째, 완전 박신 만으로 판단하였을 때 압력 유지시간이 없을 경우, 3%의 굴 개체를 더 박신하기 위해서는 1.5 MPa 정도의 가압력 증가가 필요하다. 넷째, 남해안에서 양식되는 굴 시료가 220 MPa 박신 압력과 압력 유지시간2분(120 sec.)의 조건에서 완전 박신이 이루어졌고, 굴 채묘시기와 양식 해역에 따른 박신압력 차이는 미세하다. 마지막으로 수작업으로 박신한 관능평가 결과를 1.0으로 하였을 때, 박신 압력 220 MPa과 압력 유지시간 3분의 조건이 1.52로 가장 좋았고, 그 다음은 박신 압력 220 MPa과 압력 유지시간 1분(60 sec.) 조건이 1.4이며 그 다음은 220 MPa과 압력 유지시간 2분(120 sec.) 조건에서 1.3이였다. 그러므로 박신 효율성과 관능평가 결과를 감안한 가장 바람직한 박신 조건은 220 MPa 박신압력과 압력 유지시간 2~3분의 박신조건으로 사료된다.
Abstract
Sensory evaluation of shucking pressure, pressure holding time, seeding method, difference in full shucking rate in the aquaculture area and shucking oyster was performed using an ultra-high pressure oyster shucking machine. The reaching time for each target pressure is 2.2-2.4 MPa/sec in the range of 180 MPa to 240 MPa. had a rate of pressure rise. There was a difference of 0.5-1.7℃ in the range of 24-27℃ in the seawater temperature before and after the pressure treatment inside the pressure vessel, but there was no specific increase or decrease in seawater temperature. When only the shucking pressure is increased without the pressure holding time, the critical shucking pressure at which the oyster shell is opened and the flesh is peeled in the range of 200 to 220 MPa. When the critical shucking pressure is reached, the oyster sample in the closed vessel is expected to be shucked by about 40%. If there is no pressure holding time when judged only by full shucking, an increase in pressure of about 1.5 MPa is required to further shuck 3% of the oyster population. The oyster samples cultivated in the south coast of Korea were subject to full shucking under the conditions of 220 MPa shucking pressure and two minutes (120 seconds) of pressure holding time, and the difference in the pressure of the oysters according to the oyster seeding method and the farming area was minute. Finally, the condition of 220 MPa of shucking pressure and three minutes of pressure holding time was the best at 1.52 when the result of the sensory evaluation performed manually was set to 1.0. Next was 1.4 under the conditions of 220 MPa of shucking pressure and one minute of pressure holding time (60 seconds), and 1.3 under the condition of 220 MPa and two minutes of pressure holding time (120 seconds). Therefore, it is considered that the most desirable shucking conditions, considering the efficiency and sensory evaluation results, are the conditions of 220 MPa shucking pressure and two to three minutes of pressure holding time.
참고문헌 (7)
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