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Color conversion of shiitake mushroom logs is crucial and growers must not neglect it
When the shiitake mycelium has fully colonized the bag and reached a certain physiological maturity, the aeration, light, temperature and humidity of its growing environment are artificially regulated so that all the aerial mycelium on the surface of the substrate lies down and secretes pigments; the color of the substrate surface gradually changes from dense white and pale white to light brown and then to brown and dark brown, finally forming a brown fungal film that combines multiple functions such as insulation, moisture retention, light exclusion and resistance to contaminating microorganisms. This process is called color conversion. The depth of color and the thickness of the fungal film in shiitake log color conversion are closely related to the fruiting time, fruiting yield and mushroom quality. Under general conditions
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