[Detection of konjac glucomannan in seven Amorphophallus Blume species].

ABSTRACT

Seven Amorphophallus species were detected for konjac glucomananam (KGM). It has been found out that A. albus, A. konjac, A. yuloensis, A. xemengensis and A. dunnii are of higher contents of KGM (30%), but A. sinensis and A. yunnanensis are not as further comfirmed by TLC analysis. It follows that A. albus, A. konjac, A. yuloensis, A. xemengensis and A. dunnii are high quality resources of KGM, but A. sinensis and A. yunanensis cannot be used as substitutes for the above-cited five species.