Patent ID: 8883462

Claim:
A method for producing a triprenyl phenol compound, comprising: first culturing a seed cultured filamentous fungus using a restricted medium to form an intermediate compound; and then second culturing the filamentous fungus after an intermediate stage of production culture using a production medium to form the triprenyl phenol compound from the intermediate compound; and recovering and purifying the triprenyl phenol compound from a culture obtained after the second culturing, wherein the restricted medium satisfies either of the following conditions (i) or (ii): (i) the restricted medium comprises an amine compound, a total content of all amine compounds in the restricted medium being 0.5% by mass or less; or (ii) the restricted medium comprises an organic amine compound and an optional inorganic amine compound, a total content of all organic amine compounds in the restricted medium being 0.5% by mass or less, and a total content of all inorganic amine compounds being 1% by mass or less.