ボウフウの栽培研究(第2報) : ボウフウの生育と成分含量の推移

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In order to determine the best harvesting time of the root of Saposhnikovia divaricata (Umbelliferae) for the preparation of crude drug, the plant was cultivated for two years (1991-1992) in Nagano Prefecture, and the seasonal variations of plant growth and of the amount of MeOH extract from the root were investigated. Six constituents in the root, prim-O-glucosylcimifugin (G-Cim), cimifugin (Cim), 4-0-β-glucosyl-5-O-methyl-visamminol (GMV), falcarindiol (Fal), imperatorin (Imp) and deltoin (Del), were also quantitatively determined by HPLC. The amounts of MeOH extract and the six constituents in bolting plants and non-bolting plants, during the two years of cultivation were as follows. The root weights were the highest in November of the first year and in middle August of the 2nd year. The MeOH extract was the highest during the winter dormancy. The amounts of the six constituents were higher in the 2nd year plants than in the first year plants. The G-Cim, GMV, Fal, Del, and Imp contents decreased during the bolting and flowering periods, but the Cim content increased markedly during the flowering period. After the flowering or fruiting period, all of the six constituents markedly increased. Lignification and porosity of roots were observed after bolting, and these plants withered eventually. It is considered that the greatest cause of the increment of the constituents observed after the flowering or fruiting period is the decrement of the root weight. On the basis of the root yield and the amount of MeOH extract, the best hervest time of Saposhnikovia divaricata root is considered to be November of the first year.
1998-04-20

ボウフウの栽培研究(第2報) : ボウフウの生育と成分含量の推移

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