A new potentiometric PVC membrane sensor for the determination of DPPH radical scavenging activity of plant extracts       
Yazarlar (3)
Prof. Dr. Ömer IŞILDAK Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. İlyas YILDIZ Iğdır Üniversitesi, Türkiye
Doç. Dr. Nusret GENÇ Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Food Chemistry
Dergi ISSN 0308-8146 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 03-2022
Cilt No 373
Sayı 1
DOI Numarası 10.1016/j.foodchem.2021.131420
Makale Linki https://doi.org/10.1016/j.foodchem.2021.131420
Özet
In this study, a simple, fast, stable and low-cost potentiometric determination method is recommended for the evaluation of 1,1-diphenyl-1-picrylhydrazil radical (DPPH•) scavenging activity, which is one of the antioxidant activity tests. For this purpose, a new type of solid-state-contact potentiometric polyvinyl chloride (PVC) membrane sensor was developed. Gallic acid compound, which is sensitive to the DPPH•, was used as the active ingredient in the membrane structure of the sensor. The potentiometric behavior of the developed DPPH•-selective PVC membrane sensor was characterized. The detection limit of the developed sensor was obtained as 2.3 µg/mL. The sensor can measure at low volumes with its high selectivity. The measurement results obtained were in accordance with the results of the spectroscopic method in the literature. The developed DPPH•-selective PVC membrane sensor was quickly dipped directly into the plant extracts and successfully used in test measurements of DPPH• scavenging activity.
Anahtar Kelimeler
DPPH radical | Gallic acid | Potentiometric sensor | PVC membrane