Determination of total antioxidant capacity of humic acids using CUPRAC Folin Ciocalteu noble metal nanoparticle and solid liquid extraction based methods
Yazarlar (7)
Doç. Dr. Şeyda KORKMAZ Yalova Üniversitesi, Türkiye
Nergis Kanmaz
Yalova Üniversitesi, Türkiye
Yalova Üniversitesi, Türkiye
Zeynep Balta
Yalova Üniversitesi, Türkiye
Yalova Üniversitesi, Türkiye
Prof. Dr. Pelin BARAN Yalova Üniversitesi, Türkiye
Ayşem Üzer
Istanbul Üniversitesi, Türkiye
Istanbul Üniversitesi, Türkiye
Prof. Dr. Fehime Jülide HIZAL YÜCESOY Yalova Üniversitesi, Türkiye
Reşat Apak Istanbul Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Talanta (Q1) | ||
| Dergi ISSN | 0039-9140 Dergi Bilgileri (2016) | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 06-2016 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 01-06-2016 |
| Cilt / Sayı / Sayfa | 153 / 1 / 120–129 | DOI | 10.1016/j.talanta.2016.03.006 |
| Makale Linki | http://linkinghub.elsevier.com/retrieve/pii/S003991401630131X | ||
| UAK Araştırma Alanları |
Analitik Kimya
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| Özet |
| Total antioxidant capacity (TAC) of humic acid (HA) samples was determined using CUPRAC (CUPric Reducing Antioxidant Capacity), FC (Folin-Ciocalteu), QUENCHER-CUPRAC, QUENCHER-FC, Ag-NP (Silver nanoparticle)- and Au-NP (Gold nanoparticle)-based methods. Conventional FC and modified FC (MFC) methods were applied to solid samples. Because of decreased solubility of Folin-Ciocalteu's phenol reagent in organic solvents, solvent effect on TAC measurement was investigated using QUENCHER-CUPRAC assay by using ethanol:distilled water and dimethyl sulfoxide:distilled water with varying ratios. To see the combined effect of solubilization (leaching) and TAC measurement of humic acids simultaneously, QUENCHER experiments were performed at 25°C and 50°C; QUENCHER-CUPRAC and QUENCHER-FC methods agreed well and had similar precision in F-statistics. Although the Gibbs free energy change (ΔG°) of the oxidation of HA dihydroxy phenols with the test reagents were negative, the ΔG°was positive only for the reaction of CUPRAC reagent with isolated monohydric phenols, showing CUPRAC selectivity toward polyphenolic antioxidants. This is the first work on the antioxidant capacity measurement of HA having a sparingly soluble matrix where enhanced solubilization of bound phenolics is achieved with coupled oxidation by TAC reagents. |
| Anahtar Kelimeler |
| Antioxidant capacity | CUPRAC method | Folin-Ciocalteu method | Humic acids | QUENCHER method | Silver and gold nanoparticles |
Science Direct
Determination of total antioxidant capacity of humic acids using CUPRAC Folin Ciocalteu noble metal nanoparticle and solid liquid extraction based methods
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Yöksis | 32 |
| Web of Science | 33 |
| Scopus | 35 |