Manohar, Cynthya M.; Kundgar, Saurabh D.; Doble, Mukesh (1 de xullo de 2017). "Betanin immobilized LDPE as antimicrobial food wrapper". LWT80: 131–135. doi:10.1016/j.lwt.2016.07.020.
J. H. von Elbe, Il-Young Maing, C. H. Amundson. Color Stability of Betanin. Journal of Food Science (marzo 1974) [2]
sciencedirect.com
Har Bhajan Singh
Kumar Avinash Bharati. Handbook of Natural Dyes and Pigments (2015). ISBN
978-93-80308-54-8. Cita orixinal: "The color of betanin depends on pH between 4 and 5. It is bright-bluish red, and becomes blue-violet as the pH increases. Once the pH reaches alkaline levels, betanin degrades by hydrolysis." [1]