In manufacturing of flatfish skin collagen peptide (FSCP) and flatfish protein hydrolysate (FPH) by reuse of dead flatfish from fish farm in Jeju island, the industrial process was optimized with the laboratory scale research and the on-field process. Segmented unit processes from raw material incoming to shipment were established to produce commercial product of FSCP and FPH. Total plate counts of FSCP were twenty five times of FPH, but food poisoning bacteria were not detected in two samples. FSCP and FPH were safe from heavy metal such as Pb(II), Cd(II) and Hg(II). The residual contents of antibiotics and disinfection matter in FSCP and FPH were not detected. The optimized process for mass production made the one-third of the running time and two times of the yield. From economic analysis, the production cost was estimated to 22,000 and 12,000 won/kg for FSCP and FPH, respectively. Therefore the product from the reuse of dead flatfish was expected to have a considerable competitive price and high added-value functional food material compared with other commercially available fish products.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 일반세균과 식중독세균 안전성 측정
  2.2. 중금속 안전성 측정
  2.3. 항생물질의 안전성 측정
  2.4. 산업화 공정 개선
 3. 결 과 및 고찰
  3.1. 일반세균 및 식중독세균 측정
  3.2. 중금속 분석
  3.3. 잔류 항생물질 분석
  3.4. 제조 공정의 문제점과 개선
 4. 결 론
 참고문헌

• 강건희(영산홍어(주)) | Keon-Hee Kang (Yeongsan Skate Co.,Ltd.)
• 이민규(부경대학교 화학공학과) | Min-Gyu Lee (Department of Chemical Engineering, Pukyong National University)
• 감상규(제주대학교 환경공학과) | Sang-Kyu Kam (Department of Environmental Engineering, Jeju National University)
• 정갑섭(동명대학교 식품영양과학과) | Kap-Seop Jeong (Department of Food Science & Nutrition, Tongmyong University) Corresponding author