Article
Chemistry, Multidisciplinary
Yaohua Gu, Lin Yuan, Mingming Li, Xinyu Wang, Deyu Rao, Xiaoyan Bai, Keren Shi, Haiming Xu, Shaozhang Hou, Huiqin Yao
Summary: Co-immobilized bienzyme biocatalysts have great potential in wastewater treatment. In this study, a co-immobilized bienzyme biocatalyst was prepared and found to possess good ability to degrade acridine in wastewater.
Article
Engineering, Environmental
Seema Mehandia, Shabeer Ahmad, S. C. Sharma, Shailendra Kumar Arya
Summary: In this study, a bacterial laccase from Alcaligenes faecalis XF1 was immobilized into chitosan-clay composite beads to form an immobilized laccase mediator system (CCB-L-ACS). The CCB-L-ACS system effectively decolorized textile effluent and reduced BOD and COD levels. Micro-toxicity assay confirmed a significant decrease in toxicity after treatment with the CCB-L-ACS system.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Ana Carina Cruz de Mello, Felipe Pereira da Silva, Everton Gripa, Andrea Medeiros Salgado, Fabiana Valeria da Fonseca
Summary: In this study, the tyrosinase enzyme was immobilized on granular activated carbon (GAC) and activated chitosan beads (ACBs), achieving efficient phenol removal from water samples. The immobilized enzyme on GAC was able to meet the regulatory requirements for phenol concentration, while the enzyme immobilized on ACBs showed higher efficiency even with higher initial phenol concentrations. Moreover, both immobilized enzymes could be reused multiple times.
Article
Chemistry, Physical
Sadia Aslam, Awais Ali, Muhammad Asgher, Nabila Farah, Hafiz M. N. Iqbal, Muhammad Bilal
Summary: The immobilization of laccase on Ca-alginate beads effectively decolorized various dye pollutants and reduced COD and TOC levels. This cost-effective and simple method shows promise for environmental remediation applications.
Article
Chemistry, Applied
Gulay Bayramoglu, Omur Celikbicak, Murat Kilic, M. Yakup Arica
Summary: Magnetic chitosan beads grafted with polydopamine were used to immobilize Candida rugosa lipase, leading to improved thermal and storage stability compared to the free enzyme. The immobilized lipase showed significant changes in catalytic properties and high conversion rates in esterification reactions, indicating its potential for various biotechnological applications.
Article
Chemistry, Physical
Vartika Srivastava, Abhay Kumar Choubey
Summary: A novel type of polymer beads, CS/CuO nanocomposite beads, were prepared by incorporating CuO nanoparticles into chitosan beads, showing enhanced efficiency in removing organic dyes from aqueous solutions. The adsorption process followed pseudo first order kinetics and the equilibrium could be related to the Freundlich model. The nanocomposite beads displayed 100% recovery rate and could be reused up to 5 cycles.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Polymer Science
Azzurra Apriceno, Ilaria Silvestro, Annamaria Girelli, Iolanda Francolini, Loris Pietrelli, Antonella Piozzi
Summary: Bioremediation with immobilized enzymes offers advantages like increased selectivity, activity, and stability, while laccase has shown promise for removing various contaminants. The study utilized naked or modified MnFe2O4 magnetic nanoparticles as supports for immobilizing laccase, with the MNPs-CSin situ-lac system demonstrating the best performance in degrading diclofenac in repeated batches.
Article
Chemistry, Physical
Nadya Dencheva, Sandra Oliveira, Joana Braz, Dariya Getya, Marc Malfois, Zlatan Denchev, Ivan Gitsov
Summary: This study demonstrates the successful non-covalent immobilization of Trametes versicolor laccase on neat and magnetically responsive polyamide 6 microparticles for catechol oxidation. The immobilized laccase exhibited higher activity than the native enzyme, with high adsorption efficiency and reusability.
Article
Environmental Sciences
Mojtaba Khakshoor, Ali Makhdoumi, Ahmad Asoodeh, Mohammad Reza Hosseindokht
Summary: The combination of co-entrapped spore laccase and TiO(2) nanoparticles led to efficient degradation of dye with good stability and high decolorization efficiency. Analysis of the half-life of indigo carmine in different remediation systems showed that the laccase/TiO2 combination exhibited the best degradation effect in this study.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Applied
S. Sd Elanchezhiyan, Perumal Karthikeyan, Karthik Rathinam, M. Hasmath Farzana, Chang Min Park
Summary: The magnetic kaolinite immobilized in chitosan beads (MKa@CB) has shown great potential in removing Pb(II) and Cd(II) ions from water. The adsorbent has high efficiency and stability in removing contaminants, and can be reused multiple times.
CARBOHYDRATE POLYMERS
(2021)
Article
Energy & Fuels
Mayra A. Marino, Paula Moretti, Ljubica Tasic
Summary: Cellulolytic enzymes from Trichoderma reesei were successfully immobilized on functionalized magnetic nanoparticles, showing high stability and enzyme loading capacity. These immobilized enzymes were used for cellulose hydrolysis from orange bagasse, demonstrating long-term operational stability and high residual activities.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Environmental
Jian Peng, Enhui Wu, Xiaoxuan Lou, Qian Deng, Xiaohong Hou, Chongning Lv, Qi Hu
Summary: In this study, a MOF/PVA/Lac composite with excellent enzymatic properties for degrading AQs and removing alizarin green efficiently was synthesized. The degradation product p-toluidine was identified using molecular docking, mass spectrometry, and 2DNMR, confirming the reaction mechanism C-alpha oxidation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Jibao Deng, Hefei Wang, Haisheng Zhan, Chenxi Wu, Yi Huang, Bing Yang, Ahmed Mosa, Wanting Ling
Summary: This study immobilized laccase on magnetic particles to improve its operational stability and reusability in the treatment of PAH pollution. The immobilized laccase showed high degradation efficiencies for anthracene and benzo[a]pyrene. The findings provide valuable insight in promoting the application of immobilized laccase technology in the remediation of PAH contamination.
Article
Chemistry, Physical
Sadia Noreen, Muhammad Asgher, Sarmad Ahmad Qamar, Muhammad Bilal, Hafiz M. N. Iqbal
Summary: By immobilizing Trametes versicolor IBL-04 laccase on PVA-alginate beads, the enzyme's activity and stability were improved, showing promising results in the remediation of textile dye pollutants.
Article
Biotechnology & Applied Microbiology
Katarzyna Jankowska, Adam Grzywaczyk, Adam Piasecki, Ewa Kijenska-Gawronska, Luong N. Nguyen, Jakub Zdarta, Long D. Nghiem, Manuel Pinelo, Teofil Jesionowski
Summary: Electrospun materials are suitable supports for enzyme immobilization due to their design flexibility. The immobilized laccase systems show high decolorization efficiency and good storage stability. The systems have the potential for large-scale application in removing phenolic pollutants from wastewaters.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Biochemistry & Molecular Biology
Gulay Bayramoglu, Bekir Salih, M. Yakup Arica
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2020)
Article
Engineering, Chemical
Gulay Bayramoglu, Gul Kunduzcu, Mehmet Yakup Arica
POLYMER ENGINEERING AND SCIENCE
(2020)
Article
Chemistry, Analytical
Gulay Bayramoglu, Haci Mehmet Kayili, Merve Oztekin, Bekir Salih, M. Yakup Arica
Article
Environmental Sciences
Gulay Bayramoglu, Mehmet Yakup Arica
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Chemistry, Applied
Gulay Bayramoglu, M. Yakup Arica
Summary: In this study, macroporous poly(HEMA-GMA) cryogels with modified epoxy groups were prepared for efficient adsorption and purification of lysozyme. The strong and weak cation exchange cryogels exhibited high adsorption capacities for lysozyme, with the former achieving 188.3 mg/g cryogel at 25°C. The cationic cryogel showed promising results in repeated adsorption-desorption processes, maintaining its high efficiency and capacity for lysozyme purification from egg-white.
Article
Engineering, Chemical
Gulay Bayramoglu, Aydin Akbulut, Mehmet Yakup Arica
Summary: HRP was successfully immobilized on a gel for the degradation of Direct Blue-6 dye, with significant results. The loading amount and activity of HRP were evaluated, along with toxicity testing and algal growth studies, showing a significant decrease in toxicity of the degradation products after enzyme treatment.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Chemistry, Physical
Gulay Bayramoglu, M. Yakup Arica
Summary: Regenerated cellulose films were functionalized and modified to improve dye removal efficiency, showing high adsorption capacities under different conditions and potential for wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Analytical
Omur Celikbicak, Gulay Bayramoglu, Ilkay Acikgoz-Erkaya, Mehmet Yakup Arica
Summary: The study found that the native and DABSA attached Lentinus concinnus biomasses showed significantly increased uranium ion adsorption capacity at 25 degrees C. The negative Delta G degrees values indicated that the adsorption process was spontaneous, mainly attributed to amine, carboxyl, and sulfate groups identified by ATR-FTIR data.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Biotechnology & Applied Microbiology
Ilkay Acikgoz-Erkaya, Gulay Bayramoglu, Aydin Akbulut, Mehmet Yakup Arica
Summary: In this study, biodiesel was synthesized from algae oil extracted from a hot spring water algae Kamptonema formosum. The conversion yield reached 91.2%, demonstrating the effectiveness of this method. The algae oil was found to be rich in 16 and 18 carbon long-saturated and unsaturated fatty acids, which are suitable for biodiesel synthesis.
BIOTECHNOLOGY AND BIOPROCESS ENGINEERING
(2021)
Article
Chemistry, Applied
Gulay Bayramoglu, Omur Celikbicak, Murat Kilic, M. Yakup Arica
Summary: Magnetic chitosan beads grafted with polydopamine were used to immobilize Candida rugosa lipase, leading to improved thermal and storage stability compared to the free enzyme. The immobilized lipase showed significant changes in catalytic properties and high conversion rates in esterification reactions, indicating its potential for various biotechnological applications.
Article
Chemistry, Physical
Gulay Bayramoglu, Selin Burcu Angi, Ilkay Acikgoz-Erkaya, Mehmet Yakup Arica
Summary: In this study, various green biosorbents based on Oscillatoria princeps biomass were developed for dye removal from wastewaters. The modified algal biomasses showed enhanced biosorption capacities for Reactive Red 120 dye compared to the native algal biomass, and the biosorption process was governed by hydrogen bonding, ion exchange, electrostatic, and pi-pi interactions. The biosorbents also displayed good regeneration capabilities, making them promising for practical applications in wastewater treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Analytical
Ali D. Dursun, Baris A. Borsa, Gulay Bayramoglu, M. Yakup Arica, Veli C. Ozalp
Summary: A Surface Plasmon Resonance (SPR) aptasensor was developed for the sensitive detection of Brucella melitensis in milk samples. By using aptamers with high affinity and specificity, the aptasensor enables quick and efficient purification and detection of Brucella melitensis contamination in milk samples. The integration of a magnetic isolation step and SPR technology allows for instant and reliable detection of Brucella melitensis.
Article
Chemistry, Applied
Gulay Bayramoglu, Murat Kilic, M. Yakup Arica
Summary: In this study, magnetic chitosan beads and quartz crystal microbalance chip were decorated with lysozyme specific aptamer for efficient isolation and detection of lysozyme. The developed sensor system enables label-free, concentration-dependent, and selective detection of lysozyme with high sensitivity.
Article
Biotechnology & Applied Microbiology
Gulay Bayramoglu, Murat Kilic, Mehmet Yakup Arica
Summary: Tramates trogii biomass was immobilized in carboxymethyl cellulose-lignin composite beads cross-linked with Fe(III) ions for the adsorption and degradation of bisphenol A (BPA). The maximum adsorption capacity of the immobilized biomass was higher than that of the free fungal biomass. The degradation rates of BPA were high for both the free biomass and the immobilized biomass.
Article
Food Science & Technology
Gulay Bayramoglu, Ayse Gul Cimen, M. Yakup Arica
Summary: A second polymer layer was spontaneously grafted onto the surface of polydopamine-coated magnetic particles using dia-minopolyethylene glycol without the need for an activating agent. The immobilized fi-galactosidase showed higher thermal stability and a higher optimal temperature compared to the free enzyme. The apparent Km and Vmax values for the immobilized enzyme were slightly higher than those of the free enzyme. The immobilized fi-galactosidase retained 94% of its activity after 96 hours of continuous operation in lactose hydrolysis.
INTERNATIONAL DAIRY JOURNAL
(2023)
