PROBLEM TO BE SOLVED: To extract a fraction having a PPARδ activation action from fresh Grifola frondosa, the raw material of which can be supplied stably throughout the year, and which has been eaten for a long time and has sufficient safety, and obtain a fatty acid metabolism promoter therefrom.SOLUTION: An ethanol extract, extracted from Grifola frondosa with ethanol, is partitioned with water and ethyl acetate to obtain an ethyl acetate extract, extracted as an ethyl acetate phase, which serves as a fat metabolism promoting component.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】通年で安定的に原料を供給でき、かつ、食経験が豊かで安全性が確保されている生鮮食品のマイタケからPPARδ活性化作用のある画分を抽出し、それにより脂肪酸代謝促進剤を得る。【解決手段】マイタケからエタノールにより抽出されたエタノール抽出物を得て、これを水と酢酸エチルとで分配して酢酸エチル相として抽出された酢酸エチル抽出物を脂肪代謝促進成分として得る。【選択図】図1
