1. Tesoriere L, Allegra M, Butera D, Livrea MA: Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans. Am J Clin Nutr. 2004 Oct;80(4):941-5. doi: 10.1093/ajcn/80.4.941. [PubMed:15447903 ]
  2. Tesoriere L, Butera D, Allegra M, Fazzari M, Livrea MA: Distribution of betalain pigments in red blood cells after consumption of cactus pear fruits and increased resistance of the cells to ex vivo induced oxidative hemolysis in humans. J Agric Food Chem. 2005 Feb 23;53(4):1266-70. doi: 10.1021/jf048134+. [PubMed:15713051 ]