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International Journal of Medicinal Mushrooms

Impact factor: 1.123

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v15.i2.60
pages 175-182

Production of Ginkgo Leaf−Shaped Basidiocarps of the Lingzhi or Reishi Medicinal Mushroom Ganoderma lucidum (Higher Basidiomycetes), Containing High Levels of α- and β-D-Glucan and Ganoderic Acid A

Yuka Yajima
National Institute of Advanced Industrial Science and Technology, Higashihiroshima, Japan
Minoru Miyazaki
Hokkaido Reishi Co. Ltd., Sapporo, Hokkaido, Japan
Noriyasu Okita
Hokkaido Reishi Co. Ltd., Sapporo, Hokkaido, Japan
Tamotsu Hoshino
National Institute of Advanced Industrial Science and Technology, Higashihiroshima, Japan; Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido, Japan

ABSTRACT

Ganoderic acid A and α- and β-D-glucan content were compared among morphologically different basidiocarps of the medicinal mushroom Ganoderma lucidum. Ginkgo leaf-shaped basidiocarps gradually hardened from the base to the pileus and accumulated a higher amount of bioactive components than normal (kidney-shaped) and antler/deer horn-shaped basidiocarps. In the normal G. lucidum stipe, the outer context contained the highest amount of α- and β-D-glucan (approximately 55%) and the highest amount of ganoderic acid A (approximately 0.3%). Ginkgo leaf-shaped G. lucidum had a large area of outer layer and stout outer context, which contributed to their high α- and β-D-glucan and ganoderic acid A content.