Canal resinífero

In Botany, resin canals are a type of secretory tissue found on higher floors. They are channels that secrete resins (a substance formed by a mixture of resin acids, oils and alcohols) whose function is to protect or defend plants from the attack of phytophagous insects and fungi.

The resin canals are very abundant in conifers. In the pines are located in the xylem, in the transition zone between the early log and the late log. Its secretion is called miera, from which distillation is obtained turpentine or essence of turpentine (used as solvent for paints and for the synthesis of various products such as lubricants, medicines and flavorings) and "rosin" (used in the manufacture of inks and soaps). The commercial exploitation of the "pine resin" (Pinus pinaster) was oriented to the extraction of resin for the manufacture of such products. At present this practice is almost not done since the synthesis of similar products with the same function is cheaper to do it from oil. Bibliography

wiki