Abstract
We performed functional evaluation of the fruiting bodies of Ganoderma lucidum growing on ume trees (Japanese apricot, Prunus mume), and determined the suitability of pruned ume branches as a basic component of culture medium for this mushroom. We observed that all tested functional activities of the fruiting bodies of G. lucidum collected from ume trees were higher than those collected from other broadleaf trees or cultured artificially; the functional tests were angiotensin I-converting enzyme inhibitory activity, a platelet aggregation inhibition test, and an interleukin-8 (IL-8) gene expression inhibition test. When extracts from fruiting bodies of G. lucidum were orally administered to spontaneous hypertensive rats, hypotensive effects were found. Freeze drying was the most suitable procedure for preservation of the extracts, and the activities of 30% ethanol extracts and 30% methanol extracts were higher than those of hot-water extracts. The highest functional activities for extracts from G. lucidum mycelia cultured on sawdust media were for sawdusts based on ume wood.
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