A novel Inonotus linteus strain is provided to show high alpha-amylase activity and produce a large amount of polysaccharide, which is used as a functional food raw material or a functional food additive. A novel Inonotus linteus EDEN-1 is deposited as a deposition no. KACC93046P and is characterized in that it shows excellent alpha-amylase activity and yellow color. To prepare mycellia of the Inonotus linteus EDEN-1 with increased polysaccharide content, an auto-yeast is added to a culture medium.
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