Yazar "Dinc, Saliha" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • [ X ]
    Öğe
    Comparison of newly developed hydroxyl-functionalized monodisperse HILIC columns new HILIC column
    (Taylor & Francis Inc, 2017) Dinc, Saliha; Olmez, Saba Samatya; Tuncel, Ali
    In this study, new hydroxyl-functionalized monodisperse polymeric hydrophilic interaction chromatography (HILIC) columns were developed using different derivatization agents. In addition, the influences of derivatization temperature of the best agent and polymer composition on the separation were investigated under HILIC conditions. Monodisperse-porous hydrophilic particles were synthesized by the seeded polymerization method using 3-chloro-2-hydroxypropile methacrylate (HPMA-CL) and ethylene glycol dimethacrylate (EGDMA) monomers. The chloropropyl terminal ends of the poly(HPMA-Cl-co-EGDMA) particles were derivatized with amine group of ethanolamine (EA), diethanolamine, and triethanolamine (TEA) at 80 degrees C through nucleophilic reaction. The performance of synthesized particles was evaluated with the amount of ligand on the particle surfaces, column backpressure, and separation power under HILIC condition. TEA was found to be the best derivatization agent for the separation of toluene, acrylamide, thymine, adenine, and cytosine in respect to resolution factors (>1.5 for all analytes) and theoretical plate numbers (64.562N/m for acylamide). Upon determination of the best ligand, then the effect of different derivatization temperatures and polymer composition on TEA performance was investigated. Of all the tested polymer compositions, the chromatographic performance of TEA-M-80 (the derivatization of TEA at 80 degrees C together with M polymer composition) was found to be the best.
  • [ X ]
    Öğe
    Ground Urfa isot peppers with high content of bioactive compounds and antioxidant activity
    (Agrimedia Gmbh, 2015) Kara, Meryem; Dinc, Saliha; Kahraman, Selma; Karipcin, M. Zeki; Alp, Irem; Cicekci, Hacer
    Urfa isot pepper is one of the most important spices in the diet of Turkish people; particularly of those in the Sanliurfa region. This is the first study reporting the bioactive compounds (beta-carotene, lycopene, ascorbic acid, phenolic compounds, capsaicin) and antioxidant activity of ground Urfa isot peppers produced both at homestads and factories. Factory-made red-blackish isot pepper showed the highest DPPH radical-scavenging activity, followed by homemade red-blackish isot pepper and homemade red isot pepper. FRAP values of all Urfa isot peppers were statistically in the same group. Homemade red isot pepper had the highest total phenolic content, lycopene and beta-carotene. The capsaicin content of ground Urfa isot peppers varied from 0.15-1.2 mg/g of pepper. The homemade red-blackish ground pepper had the highest ascorbic acid level. Phenolics of peppers were remarkable and higher than those reported in the literature. With their high number of phenolic constituents, as well as other bioactive compounds, ground Urfa isot peppers can be considered an important nutritional and functional food resource.
  • [ X ]
    Öğe
    High temperature-tolerant tomato lines: bioactive compounds
    (Springer International Publishing Ag, 2016) Karipcin, M. Zeki; Dinc, Saliha; Kara, Meryem; Kahraman, Selma; Alp, Irem; Cicekci, Hacer
    High global temperatures will be a great challenge for agricultural production in the near future. Therefore, adaptation of agricultural crops to the high temperatures or development of new heat-tolerant crops with known bioactive compounds is an important strategy for nutritional health and crop improvement programs. In this context, the bioactive compounds of newly developed high temperature-tolerant tomato lines were investigated in terms of lycopene, beta-carotene, ascorbic acid and phenolic compounds to assist breeders for the selection of high temperature tolerant tomato varieties with high nutritional quality. Nineteen tomato lines, including control varieties from the Turkey F1 Hybrid vegetable variety and quality line development project and the GAP Agricultural Research Institute, were selected for the investigation. Line 11 was superior in lycopene and beta-carotene content, while line 18 was superior in ascorbic acid content as compared to control varieties Cansun F1 and Alsancak RN F1. Urfa 2012 and line 28 were found to have the highest numbers of phenolic compounds. Chlorogenic acid, naringenin, trans-ferulic acid and rutin were key phenolic compounds detected in each of the tomato lines. These newly released tomato lines can be used as value-added germplasm or parent sources to develop new heat-tolerant cultivars in breeding programs or as commercial cultivars for their superior functional qualities.
  • [ X ]
    Öğe
    THE ROOTSTOCK EFFECTS ON AGRONOMIC AND BIOCHEMICAL QUALITY PROPERTIES OF MELON UNDER WATER STRESS
    (Parlar Scientific Publications (P S P), 2018) Dinc, Saliha; Kara, Meryem; Karipcin, M. Zeki; Sari, Nebahat; Can, Zehra; Cicekci, Hacer; Akkus, Mehmet
    In this study Edali F1 and Balhan Fl melons (Cucumis melo L.) grafted onto different rootstocks (TZ 148 and Jumbo) under water stress conditions (W1-100%, W2-50%, W3-25%). FRAP (Ferric reducing antioxidant power) values increased with the use of TZ 148 and Jumbo rootstocks. At water stress, grafting generally increased ascorbic acid values. Maximum beta-carotene amount was stated for Balhan Fl with W3 level and the beta-carotene values of Balhan/TZ148 melons increased with water stress. p-hydroxybenzoic acid was the compound with the highest quantity among the tested phenolic compounds. Citric, maleic, fumaric and formic acid quantities increased with enhancement of water deficiency whereas tartaric, succinic and acetic acid decreased. Fructose and saccharose quantity decreased as the amount of water given to plant decreased but glucose level was not affected. Consequently, grafting of melons onto favorable rootstocks seems to enhance the amount of health related compounds under water stress conditions.