Determination Standardization and Validation of Optimized Spectrophotometric Assays for Total Antioxidant, Polyphenol, and Flavonoid Determination: A Kinetic and Methodological Framework. jast [Internet]. 2026 Jun. 28 [cited 2026 Aug. 15];4(6):2166-77. Available from: https://journals.su.edu.ye/index.php/jast/article/view/2774