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http://dx.doi.org/10.7740/kjcs.2022.67.4.296

Changes in Growth and Saponin Content in Roots of Bellflower (Platycodon grandiflorum (JACQ.) A. DC.) with Different Soil Textures  

Mi-young Park (Department of Agricultural Science, Korea National Open University)
Yong Chul Kim (Department of Plant Bioscience, Pusan National University)
Soon-Wook Kwon (Department of Plant Bioscience, Pusan National University)
Su-Noh Ryu (Department of Agricultural Science, Korea National Open University)
Tae-ho Ham (Department of Agricultural Science, Korea National Open University)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.67, no.4, 2022 , pp. 296-304 More about this Journal
Abstract
To maximize the medicinal properties of bellflower root (Platycodi radix), its growth and development according to soil texture were investigated using four types of soil: masato (decomposed granite), soil mix, loamy sand, and sandy loam. Saponin content was measured. With regard to bellflower root growth depending on soil texture, its growth was better in the order of loamy sand > sandy loam > soil mix > masato in the above-ground part, and loamy sand > soil mix > sandy loam > masato in the underground part in the order. The average content of general ingredients were 77.3% water, 2.6% crude fat, 3.2% crude flour, 6.0% crude protein, and 10.9% carbohydrates. With respect to saponin analysis of bellflower roots, the saponin content regarding platycodin D, platycodin D3, polygalacin D, and deapioplatycodin D were higher in the order of 282.4, 104.7, 29.1, 19.1 mg/100 g, respectively. The content of organic matter and phosphoric acid was high in soil mix and sandy loam, and platycodin D3 showed similar levels in all soil types. As a result, the soil mix is considered most suitable in terms of yield and component levels, however, it is the most expensive type. As a replacement, sandy loam was adequate in terms of fresh weight related to yield and highest saponin content.
Keywords
bellflower root; platycodi radix; saponin; soil textures;
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Times Cited By KSCI : 6  (Citation Analysis)
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