Patent ID: 8883167

Claim:
A method for measuring an existence and an amount of at least one triterpenoid of a fruiting body of an Antrodia camphorata , comprising steps of: (a) extracting the fruiting body with a first ethanol solution to obtain an ethanol extract; (b) extracting the ethanol extract with an n-hexane to obtain an n-hexane extract and a first residue; (c) extracting the first residue with an ethyl acetate to obtain an ethyl acetate extract and a second residue; (d) extracting the second residue with a second ethanol solution to obtain a second ethanol extract; and (e) measuring the existence and the amount, by using a nuclear magnetic resonance and a high performance liquid chromatography respectively, of the at least one triterpenoid in the n-hexane extract, the ethyl acetate extract and the second ethanol extract, wherein the at least one triterpenoid being one selected from a group consisting of a zhankuic acid A, a dehydroeburicoic acid, an actcin C and a zhankuic acid C is only presented in the ethyl acetate extract among the n-hexane extract, the ethyl acetate extract and the second ethanol extract.