This study determined the appropriate pressure for high pressure shucking of oysters (Magallana gigas) according to size categories. One-year and two-year-old oysters harvested from Yeosu and Tongyeong coastal areas were subjected to high pressure treatments with pressure ranging from 180 to 240 MPa and holding times of 0 to 420 seconds. Results demonstrated that 100% shucking rates were achieved at 220 MPa with 120-180 seconds holding time regardless of harvest time and production area. K-means cluster analysis was used to classify oyster specimens into small, medium, and large size groups with mean shell heights of 69.0 mm, 86.6 mm, and 106.7 mm, respectively. The analysis revealed that shucking efficiency improved directly proportional to oyster size. However, the appropriate shucking pressures converged at approximately 220 MPa for all size groups, with small, medium, and large groups showing 218.9 MPa, 221.7 MPa, and 220.6 MPa, respectively, and no significant differences among groups. These findings suggest that the appropriate pressure for high pressure shucking processes be approximately 220 MPa regardless of harvest time and production area, providing foundational data for potential automation of oyster shucking processes.

서 론
재료 및 방법
    굴 시료
    압력 및 유지시간별 초고압 처리
    굴 개체 크기 분류를 위한 통계
    초고압 처리별 박신한 굴의 크기로부터 적정 박신 압력 도출
결 과
    초고압 처리에 따른 굴의 박신률
    굴의 소·중·대 크기별 박신률
고찰 및 결론
References

• 민은비(전남대학교 수산과학과 학생) | Eun-Bi MIN (Student, Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea)
• 신중로(전남대학교 수산과학과 학생) | Joong-Ro SHIN (Student, Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea)
• 강태종(전남대학교 수산과학과 학생) | Tae-Jong KANG (Student, Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea)
• 윤은아(제주대학교 해양산업경찰학과 교수) | Euna YOON (Professor, Department of Marine Industry and Maritime Police, Jeju National University, Jeju 63243, Korea)
• 김옥삼(전남대학교 조선해양공학과 교수) | Ok-Sam KIM (Professor, Dept. Naval Architecture & Ocean Enginnering, Chonnam National University, Yeosu 59626, Korea)
• 황두진(전남대학교 해양생산관리학과 교수) | Doo-Jin HWANG (Professor, School of Marine Technology, Chonnam National University, Yeosu 59626, Korea) Corresponding author