Quantitative determination of the representative triterpenoids in the extracts of Ganoderma lucidum with different growth stages using high-performance liquid chromatography for evaluation of their 5α-reductase inhibitory properties - Liu, J; Kurashiki, K; Fukuta, A; Kaneko, S; Suimi, Y; Shimizu, K; Kondo, R (Food Chem, 2012)