The objectives of this study are to increase the contents of functional compounds and antioxidant activity obtained from ginger (Zingiber officinale Roscoe) extracts using fermentation and enzyme. The optimal conditions (1%, Aspergillus luchuensis) for extraction methods were determined through fermentation treatment of ginger (concentrations of 0.5 and 1%; Aspergillus oryzae and Aspergillus luchuensis). The quality characteristics of the ginger extract for each treatment method (HW, hot water treated; EZ, enzyme; AL, fermentation; ALEZ, fermentation and enzyme) were observed using the optimal conditions. The water-soluble index (WSI) and total sugar content of the ALEZ increased by 2.6 times and 6.5 times, respectively, compared with that of the HW. However, the sum of gingerol and shogaol contents of ALEZ were 73.9% in ratio compared with lower than that of the HW. Antioxidant contents were generally higher in ALEZ, similar to the WSI trend. Therefore, ALEZ was more effective in enhancing antioxidant activity than EZ and AL. The fermentation and enzymatic approach described in this study would be beneficial to food industries for developing ginger functional products and materials.

Abstract
서 론
재료 및 방법
    실험재료
    발효 균주 및 첨가량 선정
    발효 및 효소 복합 처리
    수분용해지수 측정
    총 당 및 환원당 함량 측정
    Gingerol 및 shogaol 함량 측정
    총 폴리페놀 및 총 플라보노이드 함량 측정
    라디칼 소거능을 통한 항산화 활성 측정
    통계 분석
결과 및 고찰
    발효 균주 및 첨가량 선정
    수분용해지수
    총 당 및 환원당
    Gingerol 및 shogaol
    총 폴리페놀 및 총 플라보노이드
    항산화 활성
요 약
References

• 김미진(농촌진흥청 국립농업과학원 농식품자원부 기능성식품과) | Mi Jin Kim (Functional Food & Nutrition Division, National Institute of Agricultural Science (NIAS), Rural Development Administration (RDA))
• 남동건(농촌진흥청 국립농업과학원 농식품자원부 기능성식품과) | Dong-Geon Nam (Functional Food & Nutrition Division, National Institute of Agricultural Science (NIAS), Rural Development Administration (RDA))
• 최정숙(농촌진흥청 국립농업과학원 농식품자원부 기능성식품과) | Jeong-sook Choe (Functional Food & Nutrition Division, National Institute of Agricultural Science (NIAS), Rural Development Administration (RDA))
• 최애진(농촌진흥청 국립농업과학원 농식품자원부 기능성식품과) | Ae-jin Choi (Functional Food & Nutrition Division, National Institute of Agricultural Science (NIAS), Rural Development Administration (RDA)) Corresponding author