Phytochemical Profile And Antioxidant Activities Of Zingiber officinale (Ginger) and Curcuma longa L.(Turmeric) Rhizomes
Ümit Erdoğan, Sabri Erbaş
Abstract
The aim of our study was to evaluate and collate the chemical constituents and antioxidant properties of dry rhizomes of Ginger and dry rhizomes of Turmeric. The assay for quantification of the phenolic compounds in the samples was carried out using the reversed phase-high performance liquid chromatography (RP-HPLC). To determine mineral components in samples inductively coupled plasma optical out flow spectroscopy (ICP-OES) procedure was applied. The most abundant phenolic components in turmeric rhizomes are ferulic acid (93.59 mg), benzoic acid (40.09 mg), vanillin (26.69 mg) and p-coumaric acid (23.25mg) respectively. On the other hand, the most common phenolic components in ginger rhizomes are Benzoic acid (33.31mg), Ferulic acid (11.41 mg) and vanillin (11.83 mg). In addition, ethanolic extract ginger (EEG) and ethanolic extract turmeric (EET) had an effective DPPH• scavenging, hydrogen peroxide scavenging, ferric ions (Fe3+) reducing power activities. According to ICP-OES analysis results of rhizomes and extracts, the potassium was, quantitatively, the most abundant mineral in samples. Subsequently, sodium, magnesium, phosphorus and calcium were identified, respectively.