Relationships between the inorganic constituents content and the catalpol and sugar content in the rhizoma of Rehmannia glutinosa
1989
Park, B.Y. | Chang, S.M. | Choi, J. (Kyungbuk National Univ., Taegu (Korea R.). Coll. of Agriculture)
This study was conducted to clarify the relationships between the inorganic constituents content and the content of catalpol and free sugars in the rhizoma of Rehmannia glutinosa. Nitrogen content in rhizoma was positively correlated with the content of catalpol and ethanol extract, whereas it was negatively correlated with that of ash, galactose and fructose. Calcium content in rhizoma was highly negatively correlated with the content of catalpol, ethanol extract and water extract. However, the calcium content positively correlated with that of ash, acid insoluble ash, fructose and galactose in R. glutinosa. The catalpol content was negatively correlated with the content of ash, galactose and fructose, whereas positively correlated with that of ethanol extract and water extract, and the correlations between extract content and ash content showed highly negative significance
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