^Piattelli, M.; Minale, L.; Nicolaus, R.A. (1965). "Pigments of centrospermae—V. : Betaxanthins from Mirabilis jalapa L.". Phytochemistry. 4 (6): 817–23.
doi:
10.1016/S0031-9422(00)86258-5.
^Tesoriere, L.; Allegra, M.; Butera, D.; Gentile, C.; Livrea, M. A. (2006). "Cytoprotective effects of the antioxidant phytochemical indicaxanthin in β-thalassemia red blood cells". Free Radical Research. 40 (7): 753–61.
doi:
10.1080/10715760600554228.
PMID16984002.
^Butera, Daniela; Tesoriere, Luisa; Di Gaudio, Francesca; Bongiorno, Antonino; Allegra, Mario; Pintaudi, Anna Maria; Kohen, Rohn; Livrea, Maria A. (2002). "Antioxidant Activities of Sicilian Prickly Pear (Opuntia ficus indica) Fruit Extracts and Reducing Properties of Its Betalains: Betanin and Indicaxanthin". Journal of Agricultural and Food Chemistry. 50 (23): 6895–901.
doi:
10.1021/jf025696p.
hdl:10447/107910.
PMID12405794.