Composition #1: Mueller, SO., Schmitt, M., Dekant, W., Stopper, H., Schlatter, J., Schreier, P., Lutz, WK. Occurrence of emodin, chrysophanol and physcion in vegetables, herbs and liquors. Genotoxicity and anti-genotoxicity of the anthraquinones and of the whole plants. food and chemical toxicology, 1999, vol. 37, no. 5, p. 481–491. DOI: 10.1016/S0278-6915(99)00027-7.
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