Native to Mexico, the Mediterranean, North Africa, and the Middle East, India fig opuntia is a type of cactus that has evolved in arid climates. The plant has found culinary use in jams and jellies as well as a popular Mexican libation. India fig opuntia contains the flavanoid, quercetin (pictured above), as well as others in this family of molecules, namely isorhamnetin and kaempferol. Quercetin has been indicated as a free radical scavenger in the body, thus potentially halting oxidative stress on human cells.
Dok-Go, H.; Lee, K. H.; Kim, H. J.; Lee, E. H.; Lee, J.; Song, Y. S.; Lee, Y.-H.; Jin, C.; Lee, Y. S.; Cho, J. Brain Res. 2003, 965, 130.