“Antioxidant Activity Test Of Red Spinach Leaf (Amaranthus Tricolor L.) Extract And Fraction With Methode (2,2-Diphenyl-1 Picrylhydrazyl)”. SPECTA Journal of Technology 9, no. 2 (Agustus 21, 2025): 162–170. Diakses November 2, 2026. https://journal.itk.ac.id/index.php/sjt/article/view/8481340.