Yazar "Terzioglu, Pinar" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Evaluation of Antioxidant Activity and Phenolic Composition of Opuntia ficus-indica Cladodes Collected from Moroccan Settat Region
    (Iser Publications, 2017) Allai, Larbi; Karym, El Mostafa; El Amiri, Bouchra; Nasser, Boubker; Essamad, Abdelkhalid; Terzioglu, Pinar; Ertas, Abdulselam
    Opuntia ficus-indica cladode growing in Settat region of Morocco was freshly consumed and traditionally used in folk medicine for health benefits by the local people. The antioxidant activity and the chemical compounds of it were studied using liquid chromatography-tandem mass spectrometry (LC-MS/MS) and spectrophotometric techniques. The antioxidant activity screened using three complimentary tests; namely, ABTS, DPPH and FRAP activities. In addition, total phenolic, flavonoid and tannins contents of the extracts were also determined as gallic acid, rutin and tannic acid equivalents, respectively. In the extracts, total phenolic content ranged between 73.1 +/- 2.1 and 111.2 +/- 5.8 mg/g gallic acid equivalents while flavonoid content between 22 +/- 2.0 and 27.0 +/- 4.0 mg/g rutin equivalents and tannin content between 5.93 +/- 0.07 and 6.17 +/- 0.06 mg/g tannic acid equivalents. As a conclusion, the results highlighted that cactus cladode is a source of antioxidant phenolic compounds. Thus, the extracts of cladodes will be probably used for the development of safe food products and/or additives.
  • [ X ]
    Öğe
    Trace Elemental Analysis of Allium Species by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) with Multivariate Chemometrics
    (Taylor & Francis Inc, 2019) Oral, Elif Varhan; Tokul-Olmez, Ozge; Yener, Ismail; Firat, Mehmet; Tunay, Zeki; Terzioglu, Pinar; Aydin, Firat
    Aerial parts and roots of the 12 Allium species collected from five localities of Turkey were studied for trace elements (Ag, As, Cd, Co, Cr, Cu, Ni, Pb, Se, Tl, V, and Zn) using inductively coupled plasma mass spectrometry (ICP-MS). A tomato leaves certified reference material was used to characterize the accuracy and precision of the analysis. Each Allium species contained Se (315-2740 mu g/kg), Tl (2.75-71 mu g/kg), V (77-6790 mu g/kg), and Zn (3.73-26.6 mg/kg) which can meet the necessary daily intake of these minerals. In addition, chemometric analyses were performed using correlation analysis, principal component analysis, and hierarchical cluster analysis to determine the association of 12 trace elements in the Allium species. Using chemometrics, the distribution of elements between aerial parts and roots, and geographic collection localities of Allium species were also examined. This study is important the consumers because of the wide consumption of Allium species. This report is the first detailed characterization of the metal content of Allium species.