Arum Tri Handayani, Anna Fitriawati and Annie Rahmatillah (2025) “Optimization of Broccoli (Brassica oleracea var. italica Plenck) and Carrot (Daucus carota L.) Extract Combination Concentration Using Control Composite Design on Antioxidant Activity and Total Phenolic Content”, International Journal of Health Engineering and Technology, 4(4). Available at: https://afdifaljournal.com/journal/index.php/ijhet/article/view/403 (Accessed: 29 May 2026).