Yong-duk Park

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Hesperetin (3',5,7-trihydroxy-4-methoxyflavanone) is a metabolite of hesperidin (hesperetin-7-O-rutinoside), which belongs to the flavanone subgroup and is found mainly in citrus fruits. Hesperetin has been reported to be an effective osteoinductive compound in various in vivo and in vitro models. However, how hesperetin effects osteogenic differentiation(More)
Astragalosides are among the most predominant of the bioactive compounds in the root of Astragalus membranaceus and are differentially concentrated depending on the anatomical part of the root in question. The aim of this study was to analyse astragaloside contents in the periderm, cortex, and xylem of A. membranaceus root, and to compare the contents(More)
High performance liquid chromatography (HPLC) method was coupled with pulsed amperometric detector, a kind of electrochemical detector by combining with post-column sodium hydroxide solution in order to analyze glycosides. Using this method, the contents of amygdalin, baicalin, naringin, and hesperidin in TCMs were determined with isocratic elution of 13%(More)
Hydroxyapatite has high affinity rate with organic substance in an oral cavity, therefore lately nano-sized hydroxyapatite is extensively researched to increase affinity to tooth and remineralization. The objective of this research is indirectly to investigate the effect of nano-hydroxyapatite on remineralization using valuation about brightness of the(More)
Some crude drugs have been known to useful effect of bone tissue regeneration in oriental medicine. These drugs were studied many scientific approach for bone formation. In this study, Alizarin Red S assay, and Alkaline phosphatase (ALP) activity of the seed of Hei Chou ethanol extract was investigated to confirm the osteoblastic effect. The result was(More)
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