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Deveoglu O.,Marmara University | Deveoglu O.,Cankiri Karatekin University | Torgan E.,Research and Development Laboratory for Natural Dyes | Karadag R.,Marmara University
Coloration Technology | Year: 2012

In this study, wool fibre samples were mordanted by means of 25% alum mordant solution. The mordanted wool samples were dyed in 50%Reseda luteola L. (weld), 20%Rhamnus petiolaris Boiss (buckthorn) and 50%Datisca cannabina L. (bastard hemp) dyebaths. A reverse-phase high-performance liquid chromatography with diode-array detection method was utilised for the identification of dyes in the dyed wool samples and the plant extracts. The extraction of dyes was carried out with a hydrogen chloride/methanol/water (2:1:1; v/v/v) mixture. © 2012 The Authors. Coloration Technology © 2012 Society of Dyers and Colourists. Source


Deveoglu O.,Marmara University | Torgan E.,Marmara University | Torgan E.,Research and Development Laboratory for Natural Dyes | Karadag R.,Marmara University
Asian Journal of Chemistry | Year: 2010

In this study, the natural pigments from the cochineal (Dactylopius coccus Costa) dye insect and the walloon oak (Quercus ithaburensis Decaisne) dye plant were produced by using KAl(SO4)2 12H2O (alum), FeSO4 7H2O and SnCl2 2H2O mordants. A reversed-phase high performance liquid chromatography (HPLC) with diode array detection (DAD) method was utilized for the identification of dyestuffs in the natural pigments. The dyestuff extractions from the pigments were carried out with HCl/MeOH/H2O (2:1:1; v/v/v) solution. Source


Deveoglu O.,Marmara University | Deveoglu O.,Cankiri Karatekin University | Torgan E.,Research and Development Laboratory for Natural Dyes | Karadag R.,Marmara University
Pigment and Resin Technology | Year: 2012

Purpose - The purpose of this paper is to prepare, analyse and measure the colour values of the lake pigments obtained from the reaction of Al3+, Fe2+ and Sn2+ metal salts with the natural dyes present in European buckthorn (Rhamnus cathartica L.). Design/methodology/approach - A reversed-phase high performance liquid chromatography (HPLC) with diode-array detection method was utilised for the identification of buckthorn lake pigments. The extraction of dyes from the lake pigments was carried out with 37% hydrochloric acid/methanol/water (2:1:1; v/v/v) solution. Findings - According to the results of the HPLC analysis of the lake pigments, it was determined that rhamnetin, kaempferol, and emodin were present in the acid hydrolysed plant extract and in the lake pigment that was precipitated by Sn(II), quercetin-3-arabinosid, rhamnetin, and emodin were present in the non-hydrolysed plant extract, and kaempferol, rhamnetin, isorhamnetin, and emodin were found in the lake pigment that was precipitated by Al(III). Rhamnetin and emodin were present in the lake pigment that was precipitated by Fe(II). Research limitations/implications - In the present context for the preparation of buckthorn lake pigments, a simple and practical method is presented. In addition, the analysis of the lake pigments was performed by reversed phase HPLC (RP-HPLC) with diode array detector (DAD). Practical implications - The paper describes the preparation of lake pigments and their qualitative analysis. This method can be used to determine the origins of the dyestuffs used in historical art pieces. Originality/value - The paper describes the development of methods for the analysis and the preparation of European buckthorn lake pigments. © Emerald Group Publishing Limited. Source


Deveoglu O.,Marmara University | Deveoglu O.,Cankiri Karatekin University | Sahinbaskan B.Y.,Marmara University | Torgan E.,Research and Development Laboratory for Natural Dyes | Karadag R.,Marmara University
Asian Journal of Chemistry | Year: 2011

The purpose of this study is to analyse and to determine their colour values and rubbing and light fastness properties of the silk fabrics dyed with the natural dyes present in weld (Reseda luteola L.) and walloon oak (Quercus ithaburensis Decaisne). A reversed-phase high performance liquid chromatography (RP-HPLC) with diode-array detection (DAD) method was utilized for the identification of natural dyes present in the dyed silk fabrics. The extraction of dyes from the silk fabrics was carried out with 37 % hydrochloric acid/methanol/ water mixture (2/1/1 v/v/v). CIEL*a *b* and fastness values of the fabrics were determined. In the study reported here, for the analysis and the dyeing of silk fabrics an analytical method was developed. Source


Deveoglu O.,Marmara University | Deveoglu O.,Cankr Karatekin University | Torgan E.,Research and Development Laboratory for Natural Dyes | Karadag R.,Marmara University
Journal of Liquid Chromatography and Related Technologies | Year: 2012

The lake pigments by means of the weld (Reseda luteola) and dyer's oak (Quercus infectoria) dye plants were prepared by using KAl(SO4)212H2O (alum), FeSO47H2O and SnCl22H2O mordants. A reversed-phase high performance liquid chromatography (RP-HPLC) with diode array detection (DAD) method was utilized for the identification of dyestuffs present in the lake pigments. The dyestuff extractions from the pigments were carried out with a solution mixture of 37% HCl:MeOH:H2O (2:1:1, v/v/v). The performed method is able to analyze and detect natural dyestuffs such as luteolin, apigenin, gallic acid, and ellagic acid present in the lake pigments. © 2012 Copyright Taylor and Francis Group, LLC. Source

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