Corktree is a common name for Phellodendron amurense, which is a tree in the Rutaceae family. It is native to eastern Asia, especially northern China, Japan and Korea. Corktree has also become naturalized in North America, where it is considered to be an invasive species in some jurisdictions.
Corktree is so named for its corky bark, which turn dark gray as the tree matures. It can reach a height of 50 feet and has a wide crown, especially in older trees. This species is deciduous, so the leaves turn yellow in the fall. The black berries have a diameter of 3/8 inch and stay on the tree until winter. Each berry contains five seeds.
Corktree is generally well-adapted to temperate climates, which includes USDA Hardiness Zones 4 through 7. It can tolerate cold and drought, and often thrives in a variety of soils. However, corktree produces significantly more fruit in good soil with ample water.
The bark is generally the most important part of the corktree in herbal medicine. It contains many biologically active components, with berberine being one of the most significant. Berberine is chemically classified as a protoberberine, which is a group of isoquinoline alkaloids. Its primary biochemical actions include the suppression of cytokines, which provoke inflammatory responses.
The most common uses of corktree bark extract generally relate to its antibiotic properties. It also provides other benefits such as support for the liver and bladder.
Corktree extract may support liver function by stimulating its activity. It may also support gall bladder function.
Corktree extract is often taken orally to manage internal infections. These infections typically affect the digestive tract, urinary tract and vagina.
Corktree may provide additional benefits such as the management of metabolic syndrome and circulation. It may also help to manage skin conditions with both oral supplements and topical creams.
Corktree extract may have diuretic properties that increase urination. This property may help to manage water retention.
Internal infections are one of the most significant signs that you may need to take corktree extract orally. Additional internal problems that may benefit from this extract include abscesses and enteritis. Liver conditions such as jaundice may also indicate a need for corktree extract. Blood conditions such as unhealthy blood pressure or blood sugar level may be additional reasons for taking corktree. General symptoms that may benefit from corktree extract include fever and night sweats.
Phellodendron amurense, Phellodendron bark extract
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