Abstract
This study was aimed to determined of the potential level of rhizomes from Indonesia as an antioxidant. The calculated of potential level rhizome based on the total phenolic compound and antioxidant activity.The phenolic compound was determined using the Folin-Ciocalteau method, antioxidant activity was determined by the DPPH (1-diphenyl-2-picrylhydrazyl) method expressed in IC50. Potential level was calculated by comparing the value of total phenolic compound and antioxidant activity. The results showed that red ginger ( Zingiber officinale var Rubrum) had the highest a phenolic and flavonoid content. Therefore that red ginger, Zingiber officinale var Rubrum is the most potential level as an antioxidant followed by Curcuma longa, Curcuma zedoaria, Curcuma zanthorrhiza, and Curcuma aeruginosa Roxb.
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