The medicinal value of the mushroomGrifola.

This review contains the most recent information on the various substances isolated and Identified in the maitake mushroomGrifola, their source and significance. The majority of the references concern the anti-tumour polysaccharides that have been extracted from fruiting bodies and mycelia, but certain species can also act as metabolic regulators and contain enzymes, essential amino acids, lipids and vitamins. The use of edible fungi in the development and application of beneficial biological activities ofters an advantage in that the active principle is safe and can be tolerated by humans. Cultivation of such edible mushrooms would provide an adequate supply but is unnescessary if mycelial cultures grown in large-scale fermentations can produce the same active principle. It is hoped that this article will be infromative as the search continues for new uses for edible fungi and for educating the public about their potential value.