Phytochemical Profile And Antioxidant Activities Of Zingiber officinale (Ginger) and Curcuma longa L.(Turmeric) Rhizomes

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.

Keywords

• antioxidant
• ginger
• mineral content
• turmeric
• phenolic compound

Zencefil ve Zerdeçal Rizomlarının Fitokimyasal Profili ve Antioksidan Aktiviteleri

Abstract

Çalışmamızın amacı, Zencefilin kuru rizomlarının ve Zerdeçal'ın kuru rizomlarının kimyasal bileşenlerini ve antioksidan özelliklerini değerlendirmek ve harmanlamaktı. Numunelerdeki fenolik bileşiklerin miktar tayini analizi, ters fazlı yüksek performanslı sıvı kromatografisi (RP-HPLC) kullanılarak gerçekleştirilmiştir. Örneklerdeki mineral bileşenlerini belirlemek için endüktif olarak eşleştirilmiş plazma optik çıkış akış spektroskopisi (ICP-OES) prosedürü uygulandı. Zerdeçal rizomlarında en fazla bulunan fenolik bileşenler sırasıyla ferulik asit (93.59 mg), benzoik asit (40.09 mg), vanilin (26.69 mg) ve p-kumarik asittir (23.25 mg). Öte yandan zencefil rizomlarındaki en yaygın fenolik bileşenler Benzoik asit (33.31 mg), Ferulik asit (11.41 mg) ve vanilindir (11.83 mg). Ek olarak, etanolik zencefil özütü (EEG) ve etanolik zerdeçal özütü (EET), etkili bir DPPH• süpürme, hidrojen peroksit süpürme, demir iyonları (Fe3+) azaltıcı güç aktivitelerine sahipti. Rizomların ve etanolik ekstraktların ICP-OES analiz sonuçlarına göre, potasyum kantitatif olarak numunelerde en bol bulunan mineraldi. Daha sonra sırasıyla sodyum, magnezyum, fosfor ve kalsiyum tespit edilmiştir.

Keywords

• antioksidan
• zerdeçal
• zencefil
• mineral bileşen
• fenolik bileşen

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