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Browsing Kimya / Chemistry by Author "Arabacı, Gülnur"

Now showing items 1-20 of 34

A comparison of Polyphenoloxidases from different plants

Arabacı, Gülnur (WILEY-BLACKWELL PUBLISHING, INC, 2009)

Artichoke polyphenol oxidases (PPOs) were obtained by (NH4)2SO4 precipitation using ascorbic acid, polyvinylpyrrolidone, and Triton X-100. The PPO content of artichoke head (AHPPO) was 8820 units (mg protein)−1 as compared ...
A novel serine protease from strawberry (Fragaria ananassa): Purification and biochemical characterization

Alıcı, Esma Hande; Arabacı, Gülnur (ELSEVIER, 2018)

In this study, a protease enzyme was purified from strawberry by using Sepharose-4B-L-tyrosine-p-amino benzoic acid affinity chromatography. The molecular weight of pure protease was determined 65.8 kDa by SDS-PAGE. The ...
Adsorption of methylene blue onto activated carbon and silver activated carbon

Altıntığ, Esra; Arabacı, Gülnur (ELSEVIER SCIENCE BV, 2012)
alpha- or beta-Substituted functional phthalocyanines bearing thiophen-3-ylmethanol substituents: synthesis, characterization, aggregation behavior and antioxidant activity

Bilgiçli, Ahmet Turgut; Alıcı, Esma Hande; Yaraşır, Meryem Nilüfer; Arabacı, Gülnur; Kandaz, Mehmet (TAYLOR & FRANCIS LTD, 2015)

The tetra - or -thiophene substituted metal and metal-free phthalocyanines (Pcs) M[Pc(-OCH(2)Thiopen)(4)] and M[Pc(-OCH(2)Thiopen)(4)] {(-ThMet-MPc), (-ThMet-MPc) [ThMet: Thiophene methoxy], M=Zn(II), Co(II) and, 2H} were ...
alpha-Bromoacetophenone derivatives as neutral protein tyrosine phosphatase inhibitors: Structure-activity relationship

Arabacı, Gülnur; T Yi; H Fu; Me Porter; Kd Beebe; Dh Pei (PERGAMON-ELSEVIER SCIENCE LTD, 2002)

A series of α-haloacetophenone derivatives was tested for inhibition of protein tyrosine phosphatases SHP-1 and PTP1B. The results show that the bromides are much more potent than the corresponding chlorides, whereas the ...
alpha-Haloacetophenone derivatives as photoreversible covalent inhibitors of protein tyrosine phosphatases

Arabacı, Gülnur; Xc Guo; Kd Beebe; Km Coggeshall; D Pei (AMER CHEMICAL SOC, 1999)
Antioxidant properties of water-soluble phthalocyanines containing quinoline 5-sulfonic acid groups

Günsel, Armağan; Alıcı, Esma Hande; Bilgiçli, Ahmet Turgut; Arabacı, Gülnur; Arabacı, Gülnur; Yaraşır, Meryem Nilüfer (SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2019)

In the present study, the antioxidant properties of peripherally and nonperipherally water-soluble tetra (quinoline 5-sulfonic acid) substituted metal-free (1, 2), Zn(II) (3, 4), Co(II) (5, 6), and Mn(III)Cl (7, 8) ...
Application of three-phase partitioning for the purification of peroxidase from kiwano (Cucumis metuliferus)

Z. Denli; Arabacı, Gülnur (WILEY-BLACKWELL, 2016)
Bleaching of Cotton/polyamide fabrics with enzymes and peracetic acid

Arabacı, Gülnur (111 RIVER ST, HOBOKEN 07030-5774, NJ USA, 2014)

Presently biotechnology plays an important role especially in the field of environmental protection. In the textile industry, enzymes are often used in many technological processes as they are ecological. This study attempted ...
Catalytic Properties and Immobilization Studies of Catalase from Malva sylvestris L.

Arabacı, Gülnur; Ayşe Usluoğlu (HINDAWI LTD, 2013)

Catalase was partially purified from Malva sylvestris L. and immobilized onto chitosan. Then, its catalytic properties were investigated. (NH4)(2)SO4 precipitation and dialysis were performed in the extracted enzyme. Further ...
Characterization of activated carbon prepared from agricultural waste and its applications for decolorization of textile dyes

Ayse Usluoglu; Altıntığ, Esra; Arabacı, Gülnur (CURRENT BIOLOGY LTD, 2013)
Characterization of polyphenol oxidase from quince (Cydonia oblonga) leaves

Arabacı, Gülnur; Ayse Usluoglu (TAYLOR & FRANCIS LTD, 2010)
Determination of the binding specificity of the SH2 domains of protein tyrosine phosphatase SHP-1 through the screening of a combinatorial phosphotyrosyl peptide library

Kd Beebe; P Wang; Arabacı, Gülnur; Dh Pei (AMER CHEMICAL SOC, 2000)
Dye decolorization by Dandelion (Taraxacum officinale) Polyphenol Oxidase immobilized into Alginate Beads

Arabacı, Gülnur (DR JYOTI GARG, 2013)

In this work, Dandelion (Taraxacum officinale) polyphenol oxidase immobilized on calcium alginate beads was used for the successful and effective decolorization of textile industrial effluent. Polyphenol oxidase (PPO) ...
Effect of enzymes on after treatment of acid based dyed nylon fabric

Arabacı, Gülnur; A. Usluoglu (WILEY-BLACKWELL PUBLISHING, INC, 2009)
Formation, characterization, aggregation, fluorescence and antioxidant properties of novel tetrasubstituted metal-free and metallophthalocyanines bearing (4-(methylthio)phenoxy) moieties

Nurdan Yildirim; Bilgiçli, Ahmet Turgut; Alıcı, Esma Hande; Arabacı, Gülnur; Yaraşır, Meryem Nilüfer (ELSEVIER SCIENCE BV, 2017)

The synthesis and characterization of peripherally tetra 4-(methylthio)phenoxy substituted metal-free(2), Zn(II) (3) and Co(II) (4) phthalocyanine derivatives were reported. These newly synthesized phthalocyanine derivatives ...
Immobilization of dill (Anethum Graveolens L.) catalase and its properties

Arabacı, Gülnur (WILEY-BLACKWELL, 2012)

Over the last decade, enzyme immobilization has become more important in industry and biotechnology. In this study, catalase from dill (Anethum graveolens L.) plant was immobilized covalently with glutaraldehyde onto ...
Immobilization of Polyphenol Oxidase from Princess Tree Leaf and its applications in Dye Decolorization

Arabacı, Gülnur; A. Usluoglu; C. Cesko (RESEARCH JOURNAL BIOTECHNOLOGY, 2018)

In this work, Polyphenol oxidase (PPO) enzyme was extracted and partially purified from princess tree leaves (Paulownia tomentosa). Then, it was immobilized on calcium alginate beads. The free and immobilized PPO enzymes ...
Investigation of antimicrobial silver-dispersed activated carbon

Arabacı, Gülnur; Altıntığ, Esra (ELSEVIER SCIENCE BV, 2012)
Investigation of inhibitory effects of triazole derivatives on the protease enzymes

Arabacı, Gülnur (RESEARCH JOURNAL BIOTECHNOLOGY, 2014)

Triazoles constitute an important class of heterocyclic organic compounds because of their wide range of applications as pharmaceutical agents. They have common mode of action like inhibiting ergosterol synthesis, decreasing ...