Yıl 2021, Cilt 8 , Sayı 1, Sayfalar 163 - 172 2021-02-28

Voltammetric and spectrophotometric pathways for the determination of total antioxidant capacity in commercial turnip juice

Merve ÖZTÜRK [1] , Ersin DEMİR [2] , Tugba OZDAL [3]


In this study, total flavonoid substance, total phenolic substance and total antioxidant capacity in turnip juice which made from the turnip (Brassica rape), a plant belonging to the family of Turpgiller (Brassicaceae), and also a drink specific to the Çukurova, were investigated. The turnip juice samples, taken from the turnip juice (A sample) and hot turnip juice (B) sample in local market, prepared in the laboratory were performed as two different parallel. In addition, electrochemical method was used to evaluate total antioxidant capacity (TAC) of turnip juice and hot turnip juice. By the SWSV method, under the optimized experimental conditions was applied for quercetin determination with a limit of detection (LOD) and limit of quantification (LOQ) of 0.017 and 0.057 mg/L, respectively. These values are satisfactory for application to real food samples for the evaluation of TAC. According to the results carried out by spectrophotometric methods, the highest total phenolic and flavonoid contents and TAC were observed as 13.049±13.40 mg GAE/ml, 37.850±0.70 mg QE/ml and 81.831±3,24 mg TE/100ml, respectively. In addition, the TAC in turnip juice and hot turnip juice were calculated as 573.05±0.43 mg/L and 854.98±9.9 mg/L by SWSV, respectively. The results obtained by voltammetry and spectrophotometry methods for determinations of TAC were in correlation and found to be compatible for the determination of TAC.
Antioxidant, Turnip Juice, VOltammetry, Spectrophotometry
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Birincil Dil en
Konular Kimya, Analitik
Bölüm Makaleler
Yazarlar

Orcid: 0000-0002-9001-3969
Yazar: Merve ÖZTÜRK
Kurum: İSTANBUL OKAN ÜNİVERSİTESİ
Ülke: Turkey


Orcid: 0000-0001-9180-0609
Yazar: Ersin DEMİR (Sorumlu Yazar)
Kurum: AFYONKARAHİSAR SAĞLIK BİLİMLERİ ÜNİVERSİTESİ
Ülke: Turkey


Orcid: 0000-0001-8344-5336
Yazar: Tugba OZDAL
Kurum: İSTANBUL OKAN ÜNİVERSİTESİ
Ülke: Turkey


Tarihler

Başvuru Tarihi : 15 Haziran 2020
Kabul Tarihi : 15 Aralık 2020
Yayımlanma Tarihi : 28 Şubat 2021

Vancouver Öztürk M , Demir E , Ozdal T . Voltammetric and spectrophotometric pathways for the determination of total antioxidant capacity in commercial turnip juice. Journal of the Turkish Chemical Society Section A: Chemistry. 2021; 8(1): 163-172.