Polyporus umbellatus (Zhu Ling)
General Overview
Polyporus umbellatus, commonly known as Zhu Ling in Chinese, is a type of wood-decaying fungus belonging to the family Polyporaceae. It is widely used in traditional Chinese medicine (TCM), especially in diuretic and tonic formulations. The fungus typically has an umbrella-like appearance with a grayish-white or pale yellow cap covered in multiple pores. It grows on decaying wood or humus-rich soil. Due to its medicinal properties, Zhu Ling is also referred to as "medicinal wood ear" or "earth skin vegetable" in some regions.
Key Components
Polyporus umbellatus contains various bioactive compounds, notably polysaccharides, sterols, triterpenoids, and other components. The polysaccharides found in Zhu Ling are considered its primary pharmacologically active substances, contributing to its immunomodulatory, anti-cancer, and anti-inflammatory effects. Additionally, Zhu Ling contains trace elements such as zinc and selenium, which have anti…