There are a lot of mycelium grow on the bamboo surface, Aspergillus niger made bamboo black than fresh bamboo, Rhizopus made bamboo brown.

• 与新鲜竹材相比，霉变竹材在外观上发生了明显的变化，混合霉菌竹材经过接种培养，在其表面有大量白色的菌丝生长，竹材颜色无明显变化； 黑曲霉竹材，竹材外观颜色变成黑色，且在表面有大量黑色的斑点；