Cinchona genus is the source of a variety of alkaloids, the most familiar of which is quinine, an antipyretic (antifever) agent especially useful in treating malaria. Cinchona alkaloids include: They find use in organic chemistry as organocatalysts in asymmetric synthesis. Alongside the alkaloids, many cinchona barks contain cinchotannic acid, a particular tannin, which by oxidation rapidly yields a dark-coloured phlobaphene called red cinchonic, cinchono-fulvic acid or cinchona red. In 1934, efforts to make malaria drugs cheap and effective for use across countries led to the development of a standard called "totaquina" proposed by the Malaria Commission of the League of Nations.
Tree of the Virgin touch it, believing that it will heal illness. Next to the tree is a small chapel in El Matareya. Tree of the Virgin The Tree of the Virgin is a sycamore tree in the El Matareya suburb of Cairo, Egypt. According to local beliefs, the Virgin Mary and Saint Joseph stopped at El Matareya (then a small village) on the Flight into Egypt. Mary rested against the tree and a spring of water sprang up near it for Mary to wash Jesus. For many years its bark was taken by Christians in the belief that it had miraculous properties. It