J. Nat. Prod., 68:1720-1722, 2005
An Anthraquinone with Potent Quinone Reductase-Inducing Activity and Other Constituents of the Fruits of Morinda citrifolia (Noni)
Pawlus, A.D., Su, B-N., Keller, W.J., Kinghorn, A.D.

The authors first discuss the long history of usage of Morinda citrifolia, commonly known as noni, throughout much of tropical Polynesia, and the Hawaiian Islands. Also, its recent use as a dietary supplement in the United States has greatly increased. Accompanying these increased usages have been numerous beneficial health claims related to arthritis, cardiovascular disease, cancer, and overall health. In this study, the Pawlus group was able to isolate from the fruit of noni an extremely potent and potential cancer preventative, anthraquinone (a type of anti cancer drug). This new anthraquinone was nearly 40 times more potent than a positive control. Furthermore, it demonstrated no discernible cytotoxicity (damage to body cells) at the highest dose tested. In addition, eleven known compounds were also isolated and identified. This is the first report of the isolation of anthraquinones from noni fruits.