This study was conducted to investigate changes in the proximate composition, antioxidant activities, and α-glucosidase inhibitory activity of Opuntia ficus-indica (OFI) cladodes cultivated in Jeju (JJ1, JJ2, JJ3) and Jeonnam (JN1, JN2). The difference in the proximate composition (crude protein, lipid and ash content) of OFI between the two regions was not significant. Ca, Mg and Na were the major mineral components of OFI. The ascorbic acid content of OFI ranged from 57.87 to 143.72 mg/100 g. A 70% ethanol extract was used to investigate the antioxidant content and activity as well as the α-glucosidase inhibitory activity. The total polyphenol and flavonoid contents of OFI were 38.69~55.29 and 3.33~4.03 mg/g, respectively. The antioxidant activities based on the DPPH and ABTS free radical scavenging assays were 45.19~ 61.52% and 39.15~51.96%, respectively, at a concentration of 1 mg/mL. The inhibitory activity of OFI extracts against rat intestinal α-glucosidase was 29.72~45.73% at 1 mg/mL concentration, and JN1 showed the highest α-glucosidase inhibitory activity. This information could be very useful for authentication of Opuntia species with the highest potential as sources of nutritional and therapeutic elements.

서 론
 재료 및 방법
  1. 실험재료
  2. 일반성분 분석
  3. 무기성분 분석
  4. 비타민 C 분석
  5. 추출물 제조
  6. 총 폴리페놀 및 플라보노이드 함량 측정
  7. 자유라디칼 소거 활성 측정
  8. 환원력 측정
  9. α-Glucosidase 억제 활성 측정
  10. 통계분석
 결과 및 고찰
  1. 일반성분 함량
  2. 무기성분 함량
  3. 비타민 C 함량
  4. 총 폴리페놀 및 플라보노이드 함량
  5. 자유라디칼 소거 활성
  6. 환원력
  7. α-Glucosidase 저해 활성
 요 약
 References

• 이상훈(농촌진흥청 국립농업과학원 농식품자원부) | Sang Hoon Lee
• 정윤숙(농촌진흥청 국립농업과학원 농식품자원부) | Yun Sook Jeong
• 송진(농촌진흥청 국립농업과학원 농식품자원부) | Jin Song
• 황경아(농촌진흥청 국립농업과학원 농식품자원부) | Kyung-A Hwang
• 노건민(농촌진흥청 국립농업과학원 농식품자원부) | Geon Min Noh
• 황인국(농촌진흥청 국립농업과학원 농식품자원부) | In Guk Hwang Corresponding author