セイタカアワダチソウのポリフェノール含量の季節変動と組織別差異

概要

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Seasonal and tissue specific variations of polyphenol concentration in Solidago altissima L. were investigated. In the leaf tissues, high concentration of chlorogenic acid (Sa-2) was observed in the spring season (March, April and May). On the other hand, in the summer season, the concentration of 3,5-di-O-caffeoylquinic acid (Sa-7) increased showing the biosynthesis of Sa-7 from Sa-2 in this time. Polyphenol concentration in younger leaves was higher than that of aged leaves. Among various tissues (leaves, stems, roots and flowers) of this plant, the largest accumulation of polyphenols such as Sa-2, Sa-7 and flavonoid was observed in the flower tissues. S. altissima L. has a potential to become a new resource plant for polyphenol supplement.
2009-04-28