Antioxidant Activity Test of Ethanol Extract of White Ginger (Zingiber officinale var amarum) Using DPPH Method
Abstract
Antioxidants are substances that can delay, slow down, and prevent the oxidation process caused by free radicals. The aim of this research is to determine the phytochemical content and antioxidant activity of fresh white ginger and ginger powder (Zingiber officinale Rosc.) using the DPPH method. Fresh white ginger and ginger powder were extracted using the maceration method with ethanol as the solvent. The yield obtained for the ethanol extract of fresh white ginger was 70.042%. Meanwhile, the ethanol extract of ginger powder yielded 59.984%. Phytochemical test results for the ethanol extracts of fresh white ginger and ginger powder showed positive results for flavonoids, phenolics, and saponins, while steroids yielded negative results. In the determination of antioxidant activity, a UV-Vis spectrophotometer was used with the DPPH method. The antioxidant activity test on the ethanol extract of fresh white ginger yielded an IC50 value of 19.85 ppm, while the ginger powder extract showed an IC50 value of 31.58 ppm.
Downloads
Copyright (c) 2025 Nurani Hasanela, Catherina Manukpadang Bijang
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
1. Author retain copyright and grant the journal right of first publication with the work simultaneously licensed under a creative commons attribution license that allow others to share the work within an acknowledgement of the work’s authorship and initial publication of this journal.
2. Authors are able to enter into separate, additional contractual arrangementfor the non-exclusive distribution of the journal’s published version of the work (e.g. acknowledgement of its initial publication in this journal).
3. Authors are permitted and encouraged to post their work online(e.g. in institutional repositories or on their websites) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published works.
