barkresin
Barkresin is a natural resin produced by the bark or phloem of various trees and shrubs. It typically forms as an exudate in response to injury, infection, or other stress, and may be collected as a sticky, amber-colored substance that hardens over time. Barkresin variants differ in appearance and hardness, ranging from viscous tears to solid beads.
Composition and properties: Barkresin is a complex blend of terpenoids, resin acids, and minor phenolic compounds.
Sources and extraction: Barkresin occurs in many tree lineages, especially resinous species. It is harvested by
Uses and applications: Historically and in some traditional practices, barkresin has served as an adhesive, a
Sustainability and safety: Overharvesting and deep wounds can impair tree health. Sustainable tapping relies on rotation,