The purpose of this study was to measure the bioactivity and antioxidant activity of peel from Gardenia jasminoides fructus Ellis (GJE) in Namhae, Korea, following some established methods. CM (Chloroform:Methanol, 2:1, v/v), 70% ethanol, and n-butanol extracts were collected. Flavonoid content and value as a functional food ingredient of GJE peel was investigated through assessing antioxidant [DPPH (1,1'-diphenyl-2-picrylhydrazyl), ABTS (2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid)], and hydroxyl radical scavenging activities; superoxide dismutase like ability; ferrous ion-chelating capacity; and tannin content by solvent extraction. Solvent extract antioxidant activities significantly increased (p<0.05) at increasing concentrations (0.2, 0.4, 0.6 mg/mL). GJE peel extracts were less active than the positive control [ascorbic acid, BHA (butylated hydroxyanisole), and EDTA (ethylenediaminetetraacetic acid disodium salt dihydrate)]. Based on the results of this study, GJE peel could be used as a natural antioxidant source due to its high antioxidant activity and bioactive compound content.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험 재료 및 시료의 추출
  2.2. 탄닌과 플라보노이드 함량 측정
  2.3. 항산화능 측정
  2.4. 통계 처리
 3. 결과 및 고찰
  3.1. 수율과 탄닌 및 플라보노이드 함량
  3.2. 항산화능
 4. 결 론
 REFERENCES

• 진동혁(부산대학교 식품공학과) | Dong-Hyeok Jin (Department of Food Science and Technology, Pusan National University)
• 오다영(부산대학교 식품공학과) | Da-Young Oh (Department of Food Science and Technology, Pusan National University)
• 이영근(부산대학교 식품공학과) | Young-Guen Lee (Department of Food Science and Technology, Pusan National University)
• 강동수(전남대학교 해양바이오식품학과) | Dong-Soo Kang (Department of Marine Bio Food Science, Chonnam National University)
• 김한수(부산대학교 식품공학과) | Han-Soo Kim (Department of Food Science and Technology, Pusan National University) Corresponding author