한국식품영양학회지 Vol. 32 No. 6 (p.598-610)

|연구논문|
전북지역 전통 된장의 품질특성 및 항산화 활성

Quality Characteristics and Antioxidant Activity of Regional Traditional Soybean Pastes (Deonjang) in Jeonbuk Province
키워드 :
quality,antioxidant activity,isoflavone,Doenjang,Jeonbuk

목차

Abstract
서 론
재료 및 방법
   1. 실험재료 및 시약
   2. 품질특성 분석
   3. 이소플라본 함량 분석
   4. 총 폴리페놀 함량 분석
   5. 항산화 활성 분석
   6. 통계처리
결과 및 고찰
   1. 전북지역 된장의 품질 특성
   2. 전북지역 된장의 이소플라본 함량
   3. 전북지역 된장의 총 폴리페놀함량
   4. 전북지역 된장의 항산화 활성
요약 및 결론
References

초록

The purpose of this study was to investigate the quality characteristics and antioxidant activity by collecting four times on six samples of Jeonbuk regional soybean pastes (Doenjang) traditionally prepared for this study. The water content of samples decreased according to progress of the aging period and the water content of the fourth sample collected was 42.40~59.64% (p<0.05). The salinity of the fourth Doenjang samples was 11.80~18.60%. The amino-type nitrogen content was 122.67~540.33 mg% immediately after the preparation of Doenjang in the Jeonbuk region and the content of the fourth collection samples increased from 251.49 to 982.36 mg% (p<0.05). The isoflavone glycosides decreased but daidzein, genistein and glycitein, which are aglycones, increased during aging periods. The total polyphenol content of the fourth collected samples was 11.99~19.27 mg GAE/g (p<0.05). The DPPH radical scavenging activity, ABTS radical scavenging activity and FARP of the fourth Doenjang samples were 51.88~81.21%, 84.14~90.32%, and 1.08~3.11 mg Trolox/g, respectively. As a result of quality analysis on Doenjang, the superiority of traditional Doenjang has been proven by the increase of amino nitrogen content and antioxidant activity according to the aging period. However, factor analysis on quality differences of regional Doenjang should be conducted to ensure standardization and quality improvement.