Antioxidant Activity Test Of Red Spinach Leaf (Amaranthus Tricolor L.) Extract And Fraction With Methode (2,2-Diphenyl-1 Picrylhydrazyl). sjt [Internet]. 21 Agustus 2025 [dikutip 2 November 2026];9(2):162-70. Tersedia pada: https://journal.itk.ac.id/index.php/sjt/article/view/8481340