Retraction notice to “Antioxidant potential and phenolic composition of Cistanche tinctoria: A comparative study of crude, flavonoid, and tannin extracts” [Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki, 2025, vol. 167, no. 2, pp. 242–253. https://doi.org/10.26907/2542-064X.2025.2.242-253] - Retraction Notice | RetractBase