抄録
The tubers of Lycoris radiata contain a large amount of starch. However, we can. not eat them, because there exis poisonous alkaloids in them. These alkaloids which are used as medicines, can be easily extracted with water or dilute HCI. Japanese acid clay adsorbs the whole alkaloids in' solution and the bases in this adsorbate are again extracted with NaOH.
The roots of Imperata arundinaceae contain a considerable quantity of sugar. We can isolate this sugar from them. A bitter taste of the sugar mass is removed by diatome earth.
