Yazar "Kıvrak, Şeyda" için TR-Dizin İndeksli Yayınlar Koleksiyonu listeleme
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Assessment of Volatile Oil Composition, Phenolics and Antioxidant Activity of Bay (Laurus nobilis) Leaf and Usage in Cosmetic Applications
Kıvrak, Şeyda; Göktürk, Tolga; Kıvrak, İbrahim (2017)In this study, the components of the volatile oil obtained from Laurus nobilis leaves by steam distillation were determined using Agilent 6890 Gas Chromatography (GC) - 5975 Mass Spectrometry (MS). The antioxidant activities ... -
Boronic acid-functionalized silica microparticles for isolation of flavonoids from Hypericum perforatum
Çetinkaya, Onur; Çiçek, Hüseyin; Kıvrak, Şeyda; Tel Çayan, Gülsen (Turkish Chemical Society, 2018)We have selectively separated cis-and/or vicinal-diol-containing flavonoids from Hypericum perforatum (HP) by adsorption/desorption used aminophenylboronic acid (APBA) functionalized uniform (1.6 ?m) silica microparticles ... -
Determination of Phenolic Composition of Tilia Tomentosa Flowers Using UPLC-ESI-MS/MS
Kıvrak, Şeyda; Göktürk, Tolga; Kıvrak, İbrahim (2017)Phenolic compounds, which are secondary metabolites of plants, are one of the main groups of compounds that provide antiallergic, antiinflammatory, antimicrobial, antioxidant, cardioprotective properties of medicinal and ... -
Development and validation of modified QuEChERS method coupled with GC-MS/MS for 123 pesticide residues in food
Harmandar, Mansur; Kıvrak, Şeyda (2018)In this study, a gas chromatography-tandem mass spectrometry (GCMS/MS) instrument, which has been widely used in recent years and has high separation power, selectivity and ability to identify pesticides has been used. It ... -
Investigation of Chemical Composition and Nutritional Value of Truffle Mushroom (Tuber nitidum Vittad.)
Kıvrak, Şeyda; Kıvrak, İbrahim (2018)Truffles are very precious and expensive mushrooms owing to their distinctive aroma and great flavor. The present study was carried out to survey the nutritional value of Tuber nitidum, a wild edible mushroom belonging to ... -
Myrtus communis L.: Characterisation of Essential Oil of Leaves and Fatty Acids of Seeds Using Gas Chromatography-Mass Spectrometry (GC/MSD)
Kıvrak, Şeyda (2018)In this study, the chemical contents of essential oil acquired from Myrtus communis leaves using hydrodistillation and seed oil obtained using cold press method analyzed with gas chromatography-mass spectrometry (GC/MSD). ...