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http://dx.doi.org/10.5307/JBE.2003.28.2.157

Internal Quality Evaluation and Age Identification of Fresh Korean Ginseng using Magnetic Resonance Imaging  

임종국 (Division of Bioresource Systems Engineering, Chonbuk national university)
김철수 (Division of Bioresource Systems Engineering, Chonbuk national university)
이승조 (Division of Bioresource Systems Engineering, Chonbuk national university)
김성민 (Division of Bioresource Systems Engineering, Chonbuk national university)
Publication Information
Journal of Biosystems Engineering / v.28, no.2, 2003 , pp. 157-166 More about this Journal
Abstract
The purpose of this study is to characterize the internal physical properties of fresh Korean ginsengs (Panax ginseng C.A. Meyer) through a magnetic resonance imaging (MRI) technique. Current external visual inspection cannot determine internal quality of ginsengs successfully. Relaxation time constants, T$_1$ and T$_2$*, were obtained from a series of MR images. Calculated Ti values were varied with different physiological states of ginseng tissues. Internal imaging information was obtained nondestructively from fresh ginsengs. One- and two-dimensional image analyses were performed. One-dimensional image analysis showed a potential of age identification of ginsengs rapidly. Internal quality of normal and abnormal ginsengs was evaluated using two-dimensional MR images. Various types of internal defects such as internal cavity and rotten spot were visualized clearly. The MRI technique had a feasibility to detect internal defects of fresh ginsengs effectively.
Keywords
Fresh Korean ginseng; Magnetic Resonance Imaging; Nondestructive; Relaxation time constant; Internal quality; Age identification;
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