This study examined nondestructive analysis of internal quality characteristics and physical changes in fresh agricultural products using magnetic resonance imaging (MRI) and evaluated its potential as a quality assessment tool. Korean melons, pears, and onions were selected, and changes in internal tissues, damage, and heterogeneity were qualitatively analyzed. After seven days of storage, moisture was redistributed from the flesh to the peel and stem-end regions in melon samples, resulting in increased signal intensity in the two regions on MRI. In pear samples, normal tissues exhibited strong and uniform signal intensity during storage, whereas damaged tissues showed reduced signal intensity and enlarged abnormal regions, owing to moisture loss and tissue degradation, respectively. In onion samples, the signal intensity of the central sprouting region was approximately twice than that of the surrounding shell tissue, and the outer shell tissue exhibited higher signal intensity than the inner shell tissue due to magnetic susceptibility. These results demonstrate that MRI can evaluate the internal quality of fresh agricultural products in a nondestructive manner and grade them objectively, suggesting broad application potentials in agro–food science field.

Abstract
서 론
재료 및 방법
    재료 및 자기공명영상 획득
    자기공명영상 펄스 시퀀스
결과 및 고찰
요 약
ORCID
Conflict of interests
Data availability
Authorship contribution statement
Ethics approval
References

• 임수연(국립원예특작과학원 저장유통과) | Sooyeon Lim (Postharvest Technology Division, National Institute of Horticultural Herbal Science, Jeonbuk 55365, Korea)
• 김성민(전북대학교 생물산업기계공학과, 전북대학교 농업기계ICT융합연구소) | Seong Min Kim (Department of Bioindustrial Machinery Engineering, Jeonbuk National University, Jeonbuk 54896, Korea, Institute for Agricultural Machinery & ICT Convergence, Jeonbuk National University, Jeonbuk 54896, Korea) Corresponding author