The aim of this study was to investigate and development collagen peptide materials from skate skin. Protein and fat content of collagen peptide showed about 95% and 0.1%, respectively. Average molecular weight of collagen peptide was measured as 1,015. In the analysis of amino acid, glycine and hydroxy proline content in collagen peptide was 19.32% and 16.25%, respectively, showing a typical characteristics of the collagen peptide. In obese db/db mice ingested 500 mg/day of collagen peptide for 18 days, the amounts of food and water intake were decreased considerably, contents of triglyceride, total cholesterol were decreased significantly in white adipose tissue of db/db mice. The final yield of collagen peptide was 17.23% in the optimized process for mass production. These results indicate that collagen peptide from skate skin may serve as candidates of fat reduction in adipose tissue and could be used as functional food and cosmetic ingredients.

Abstract
 1. 서 론1
 2. 재료 및 방법
  2.1. 콜라겐 펩타이드의 제조
  2.2. 이화학적 특성 측정
  2.3. 비만 유발 마우스에서의 혈청 및 지방조직의 지질감소 효과
  2.4. 콜라겐 펩타이드의 대량 생산
 3. 결과 및 고찰
  3.1. 이화학적 특성
  3.2. 비만 유발 마우스에서의 혈청 및 지방조직의 지질감소 효과
  3.3. 홍어 껍질 콜라겐 펩타이드의 대량 생산 및 관련응용제품 생산
 4. 요 약
 감사의 글
 REFERENCES

• 백장미(영산홍어(주), Yeongsan Skate Co., Ltd.) | Jang-Mi Baek
• 강건희(영산홍어(주), Yeongsan Skate Co., Ltd.) | Keon-Hee Kang
• 김상호(영산홍어(주), Yeongsan Skate Co., Ltd.) | Sang-Ho Kim Corresponding author
• 노정숙(동명대학교 식품영양학과, Department of Food Science & Nutritional, Tongmyong University) | Jeong-Sook Noh
• 정갑섭(동명대학교 식품영양학과, Department of Food Science & Nutritional, Tongmyong University) | Kap-Seop Jeong