The purpose of the present invention is to provide the truffle mycelium and fruiting body cultivated by the medium that are developed for cultivating the truffles with a very high radical oxygen scavenging capacity. A medium for cultivating truffles, said medium comprising a mixture of at least one carbohydrate source selected from the group consisting of rice bran, wheat bran, and glucose, and at least one edible ingredient selected from the group consisting of burdock, nuts, and berries, wherein the weight ratio of said edible ingredient to said carbohydrate source is comprised between 0.5 and 5. As for one of the ingredients, it is preferable that the burdock is granulated. The medium may exist in a liquid state. By injecting truffle seeds for cultivation into such a medium, the truffle mycelium and fruiting body with the high reactive oxygen scavenging capacity could be provided.
