LC extract
The LC was purchased from Food Synergy Co., Ltd. (Seoul, South Korea). After 70% ethanol was added to the crushed LC, the extract was obtained after sitting at 60 °C for 12 h. The LC extract was filtered using qualitative filter paper, and the extract was concentrated using a rotary vacuum evaporator (N-1300E.V.S. EYELA Co., Tokyo, Japan). The LC was lyophilized using a freeze dryer at − 80 °C (Ilshin Lab Co., South Korea). The sample was prepared as a powder and stored at − 20 °C after dilution.