PROBLEM TO BE SOLVED: To provide a process for producing an extract from a lichen belonging to the genus Usnea which can be suitably used for skin external agents such as whitening agents.SOLUTION: A process for producing an extract from a lichen belonging to the genus Usnea which has a low usnic acid content, includes extracting a lichen belonging to the genus Usnea with an aqueous alcohol solution having an alcohol content of >70% by volume, and applying at least one treatment selected from the group consisting of a low temperature preserving treatment and a hydration treatment to the obtained extract, in which a remaining ratio of the usnic acid after subjected to the treatment is <50%.COPYRIGHT: (C)2014,JPO&INPIT【課題】美白剤などの皮膚外用剤に好適に用いることができるサルオガセ(Usnea)属地衣類抽出物の製造方法を提供する。【解決手段】サルオガセ属地衣類を、アルコール含有率が70体積%を超えるアルコール水溶液を用いて抽出し、得られた抽出物に対して低温保存処理及び加水処理からなる群より選ばれる1種以上の処理を行う抽出物の製造方法であって、前記処理後のウスニン酸の残存率が50%未満である、ウスニン酸低含有サルオガセ属地衣類の抽出物の製造方法。【選択図】なし
