Jamun, also known as Indian blackberry or Eugenia jambolana, is a tropical tree native to India and Southeast Asia. It is an evergreen tree with dark green, glossy leaves and small, fragrant white flowers. The fruit of the Jamun tree is a dark purple to black, oblong berry with a sweet and slightly astringent taste.
Jamun fruits contain various chemical constituents, including anthocyanins, tannins, flavonoids, and vitamins. The dark color of the fruit is due to the presence of anthocyanins, particularly cyanidin-3-glucoside.