- Netzel, M. Stintzing, F. C. Quaas, D. Straß, G. Carle, R. Bitsch, R. Bitsch, I. Frank, T.: Renal excretion of antioxidative constituents from red beet in humans Food Research International. 2005/10/01/;38(8):1051-1058.
- Mandl KD, Kohane IS, Brandt AM: Electronic patient-physician communication: problems and promise. Ann Intern Med. 1998 Sep 15;129(6):495-500. doi: 10.7326/0003-4819-129-6-199809150-00012. [PubMed:9735088 ]
- Sawicki T, Topolska J, Romaszko E, Wiczkowski W: Profile and Content of Betalains in Plasma and Urine of Volunteers after Long-Term Exposure to Fermented Red Beet Juice. J Agric Food Chem. 2018 Apr 25;66(16):4155-4163. doi: 10.1021/acs.jafc.8b00925. Epub 2018 Apr 11. [PubMed:29638119 ]
- Frank T, Stintzing FC, Carle R, Bitsch I, Quaas D, Strass G, Bitsch R, Netzel M: Urinary pharmacokinetics of betalains following consumption of red beet juice in healthy humans. Pharmacol Res. 2005 Oct;52(4):290-7. doi: 10.1016/j.phrs.2005.04.005. [PubMed:15964200 ]
- Sawicki T, Topolska J, Baczek N, Szawara-Nowak D, Juskiewicz J, Wiczkowski W: Characterization of the profile and concentration of betacyanin in the gastric content, blood and urine of rats after an intragastric administration of fermented red beet juice. Food Chem. 2020 May 30;313:126169. doi: 10.1016/j.foodchem.2020.126169. Epub 2020 Jan 7. [PubMed:31945698 ]