METHOD FOR PRODUCING PLANT LEAF-DERIVED PRODUCT, AND PLANT LEAF-DERIVED POWDER

To suitably and effectively utilize a wet-treated leaf such as residual extract from bamboo grass.SOLUTION: The present invention discloses a method for producing a plant leaf-derived product. The method uses a wet-treated leaf, which is a wet body that is in a wet state as a water-insoluble component contained in a leaf of a plant of Bambusoideae (Poaceae) holds a basic aqueous solution, to produce a plant leaf-derived product, which is a product derived from the leaf of the plant. The method includes a water adding step (S202) for adding water so that the wet-treated leaf is at least partially immersed in water, and a neutralization step (S204) for bringing the water added in the water adding step into contact with a cation exchange resin to bring the pH of an aqueous component held by the wet-treated leaf near to the neutrality.SELECTED DRAWING: Figure 1 【課題】ササ抽出残渣等の湿潤処理葉を適切かつ有効に利用する。【解決手段】イネ科タケ亜科の植物の葉に含まれる非水溶性成分が塩基性水溶液を保持することで湿潤の状態になっている湿潤体である湿潤処理葉を用いて前記植物の葉に由来する製造物である植物葉由来製造物を製造する植物葉由来製造物の製造方法であって、湿潤処理葉の少なくとも一部が水に浸かるように加水を行う加水工程（Ｓ２０２）と、加水工程において加水した水と陽イオン交換樹脂とを接触させることで湿潤処理葉が保持している水性成分のｐＨを中性に近づける中和工程（Ｓ２０４）とを備える。【選択図】図１