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KMID : 0352720020260040213
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Journal of Ginseng Research
2002 Volume.26 No. 4 p.213 ~ p.218
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Occurrence, Type and Ultrastructure of Calcium Oxalate Crystals in Panax ginseng
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이상욱/Lee SW
권우생/정병갑/Kwon WS/Jeong BK
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Abstract
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Crystalline calcium oxalate occur throughout nearly all plants species in five major forms; styloids, druses, raphids, prisms and sands. These crystals are known to be distributed in specific tissue such as cortex, xylem, phloem, cambium and epidermis. This research was undertaken to identify the occurrence, type, location and ultrastructure of druse crystals in Panax ginseng. In situ visualization, conventional light microscopy, histochemistry and scanning electron microscopy were applied for these purposes. Druse crystals in ginseng were identified as calcium oxalate by silver nitraterubeanic acid histochemistry. Calcium oxalate crystals are observed in nearly all plant organs such as leaf, petiole, peduncle, stem, rhizome, tap root and lateral root except fine root. Most frequent observation of crystals in the leaf and rhizomes were noticed. Three different types of calcium oxalate druse crystals were identified by scanning electron microscopy.
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