This study explored how enzyme type (cellulase and pectinase), concentration, and mixing ratio influence the functional compounds and antioxidant activities of purple sweet potato (Ipomoea batatas L.). The enzyme treatment significantly impacted all measured parameters. At a cellulase concentration of 30 units, the total anthocyanin content reached 399.4 mg/100g dry weight (DW), representing a 163% increase compared to the control (151.6 mg/100g DW). Total polyphenol (1,799.7 mg GAE/100g DW) and flavonoid (475.3 mg CE/100g DW) contents also peaked under these conditions, while higher enzyme concentrations or increased pectinase ratios reduced extraction efficiency. The highest ABTS radical scavenging activity was noted at 30 units of cellulase (954.0 mg TE/100g DW) and at 80 units in a combined treatment of cellulase (2) to pectinase (1) (927.2 mg TE/100g DW), suggesting that moderate enzyme synergy enhances antioxidant release. Conversely, DPPH activity decreased with higher enzyme concentrations, with all combined treatments yielding lower results than the control. Overall, the optimal condition for enhancing both functional compound extraction and antioxidant activity in purple sweet potato was identified as a single treatment with cellulase at 30 units.

Abstract
서 론
재료 및 방법
    1. 시험재료
    2. 효소처리
    3. 추출방법
    4. 총 안토시아닌 함량
    5. 총 폴리페놀 및 플라보노이드 함량
    6. Radical 소거활성
    7. 통계분석
결과 및 고찰
    1. 총 안토시아닌 함량
    2. 총 폴리페놀 함량
    3. 총 플라보노이드 함량
    4. DPPH radical 소거 활성
    5. ABTS radical 소거 활성
    6. 상관관계 분석
요약 및 결론
감사의 글
References

• 황엄지(농촌진흥청 국립식량과학원 농업연구사) | Eom-ji Hwang (Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea) Corresponding author
• 유경단(농촌진흥청 국립식량과학원 농업연구사) | Gyeong-dan Yu (Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 박유진(농촌진흥청 국립식량과학원 농업연구사) | You-jin Park (Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 김태화(농촌진흥청 국립식량과학원 농업연구사) | Tae Hwa Kim (Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 박원(농촌진흥청 국립식량과학원 농업연구사) | Won Park (Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 이교휘(농촌진흥청 국립식량과학원 농업연구사) | Kyohwui Lee (Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 안종욱(농촌진흥청 국립식량과학원 농업연구사) | Jonguk An (Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 장가은(농촌진흥청 국립식량과학원 전문연구원) | Gaeun Jang (Master’s Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 정미남(농촌진흥청 국립식량과학원 농업연구관) | Mi Nam Chung (Senior Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 이형운(농촌진흥청 국립식량과학원 농업연구관) | Hyeong-Un Lee (Senior Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)
• 우관식(농촌진흥청 국립식량과학원 농업연구관) | Koan Sik Woo (Senior Researcher, National Institute of Crop and Food Science, Rural Development Administration, Muan 58545, Korea)