This study assessed dried vegetables derived from sweet potato petioles to promote the use of typically discarded aerial parts. The length (18.25 to 35.00 cm) and thickness (4.59 to 6.66 mm) of the petioles varied by variety, with ‘Hophungmi’ and ‘Tongchaeru’ showing promise for dried vegetable processing due to their longer and thicker petioles. In terms of color, ‘Hophungmi’ and ‘Shinmi’ exhibited high lightness, ‘Tongchaeru’ and ‘Hayangmi’ displayed strong redness, and ‘Pungwonmi’ had high yellowness. Rehydration rates and hardness increased over the harvest period, with ‘Pungwonmi’ and ‘Tongchaeru’ demonstrating excellent rehydration capacity. Additionally, ‘Hayangmi,’ ‘Shinmi,’ ‘Tongchaeru,’ and ‘Hophungmi’ maintained lower hardness levels, appealing to consumers who prefer a softer texture. Notably, the substantial polyphenol content (10.70 to 16.20 mg GAE/g) and flavonoid content (4.79 to 8.11 mg CE/g), along with antioxidant activity (DPPH: 1.11 to 2.14 mg, ABTS: 5.51 to 7.78 mg TE/g), indicate their potential as antioxidant-rich functional foods. This research supports the development of dried vegetable products tailored to consumer preferences.

Abstract
서 론
재료 및 방법
    1. 시험재료 및 건나물 제조
    2. 색도
    3. 재수화율
    4. 경도
    5. 폴리페놀 및 플라보노이드 함량
    6. Radical 소거활성
    7. 통계분석
결과 및 고찰
    1. 고구마 품종별 잎자루 특성
    2. 고구마 품종별 잎자루 활용 건나물의 색도
    3. 고구마 품종별 잎자루 활용 건나물의 재수화율
    4. 고구마 품종별 잎자루 활용 건나물의 경도
    5. 고구마 품종별 잎자루 활용 건나물의 총 폴리페놀 및플라보노이드 함량
    6. 고구마 품종별 건나물의 DPPH 및 ABTS radical 소거활성
요약 및 결론
감사의 글
References

• 황엄지(농촌진흥청 국립식량과학원 농업연구사) | Eom-ji Hwang (Researcher, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea) Corresponding author
• 유경단(농촌진흥청 국립식량과학원 농업연구사) | Gyeong-dan Yu (Researcher, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea)
• 박유진(농촌진흥청 국립식량과학원 농업연구사) | You-jin Park (Researcher, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea)
• 장가은(농촌진흥청 국립식량과학원 전문연구원) | Ga-eun Jang (Master’s Researcher, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea)
• 송연상(농촌진흥청 국립식량과학원 농업연구관) | Yeon-Sang Song (Senior Researcher, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea)
• 이형운(농촌진흥청 국립식량과학원 농업연구관) | Hyeong-Un Lee (Senior Researcher, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea)
• 우관식(농촌진흥청 국립식량과학원 농업연구관) | Koan Sik Woo (Senior Researcher, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea)