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Ali J, Tuzen M, Bux Jatoi W, Ahmed Jakhrani M, Hazer B. Determination of chromium in foodstuffs by using novel adsorbent in vortex assisted-dispersive solid phase micro-extraction method: An application of multivariate techniques. Food Chem 2024; 446:138871. [PMID: 38432133 DOI: 10.1016/j.foodchem.2024.138871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/05/2024]
Abstract
A new graft copolymer composed of polystyrene and polylinoleic acid (PLinas) with the sodium salt of iminodiacetate (Ida) was synthesized and used as an adsorbent. The vortex-assisted dispersive solid-phase micro-extraction (VA-dSPµE) method was used for the extraction and pre-concentration of chromium. Multivariate methodologies, such as factorial design and 3D surface plots, were applied for screening and optimizing effective extraction parameters. The influence of diverse analytical parameters, such as pH, sample volume, and interfering ions, on the extraction of chromium was studied. The calibration standard curve exhibited a linear range from 0.01 to 0.50 μg L-1. The relative standard deviation and limit of detection were found to be 1.65 % and 0.003 μg L-1, respectively. Extraction recoveries were found in the range of 96 to 99 % by using certified reference materials (CRMs). The adsorbent capacity of PLinas-Ida was found to be 112 mg g-1. The VA-dSPµE method demonstrated its effectiveness in the pre-concentration and determination of chromium within samples of foodstuffs by graphite furnace-atomic absorption spectrometry (GF-AAS).
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Affiliation(s)
- Jamshed Ali
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; Tokat Gaziosmanpaşa University, Faculty of Science and Arts, Chemistry Department, 60250 Tokat, Turkiye; Institute of Chemistry, Shah Abdul Latif University, Khairpur Mir's, 66020 Sindh, Pakistan
| | - Mustafa Tuzen
- Tokat Gaziosmanpaşa University, Faculty of Science and Arts, Chemistry Department, 60250 Tokat, Turkiye.
| | - Wahid Bux Jatoi
- Institute of Chemistry, Shah Abdul Latif University, Khairpur Mir's, 66020 Sindh, Pakistan
| | | | - Baki Hazer
- Department of Aircraft Airframe Engine Maintenance, Kapadokya University, 50420 Nevşehir, Turkiye; Departments of Chemistry/Nano Technology Engineering, Zonguldak Bulent Ecevit University, 67100 Zonguldak, Turkiye
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Dolashka P, Marinova K, Petrov P, Petrova V, Ranguelov B, Atanasova-Vladimirova S, Kaynarov D, Stoycheva I, Pisareva E, Tomova A, Kosateva A, Velkova L, Dolashki A. Development of CuO Nanoparticles from the Mucus of Garden Snail Cornu aspersum as New Antimicrobial Agents. Pharmaceuticals (Basel) 2024; 17:506. [PMID: 38675466 PMCID: PMC11054170 DOI: 10.3390/ph17040506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/10/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Several biologically active compounds involved in the green synthesis of silver and gold nanoparticles have been isolated from snail mucus and characterized. This paper presents a successful method for the application of snail mucus from Cornu aspersum as a bioreducing agent of copper sulfate and as a biostabilizer of the copper oxide nanoparticles (CuONPs-Muc) obtained. The synthesis at room temperature and neutral pH yielded nanoparticles with a spherical shape and an average diameter of 150 nm. The structure and properties of CuONPs-Muc were characterized using various methods and techniques, such as ultraviolet-visible spectroscopy (UV-vis), high-performance liquid chromatography (HPLC), one-dimensional polyacrylamide gel electrophoresis (1D-PAGE), up-conversion infrared spectroscopy Fourier transform (FTIR), scanning electron microscopy combined with energy dispersive spectroscopy (SEM/EDS), Raman spectroscopy and imaging, thermogravimetric analysis (TG-DSC), etc. Mucus proteins with molecular weights of 30.691 kDa and 26.549 kDa were identified, which are involved in the biogenic production of CuONPs-Muc. The macromolecular shell of proteins formed around the copper ions contributes to a higher efficiency of the synthesized CuONPs-Muc in inhibiting the bacterial growth of several Gram-positive (Bacillus subtilis NBIMCC2353, Bacillus spizizenii ATCC 6633, Staphylococcus aureus ATCC 6538, Listeria innocua NBIMCC8755) and Gram-negative (Escherichia coli ATCC8739, Salmonella enteitidis NBIMCC8691, Salmonella typhimurium ATCC 14028, Stenotrophomonas maltophilia ATCC 17666) bacteria compared to baseline mucus. The bioorganic synthesis of snail mucus presented here provides CuONPs-Muc with a highly pronounced antimicrobial effect. These results will expand knowledge in the field of natural nanomaterials and their role in emerging dosage forms.
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Affiliation(s)
- Pavlina Dolashka
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
| | - Karina Marinova
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
| | - Petar Petrov
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
| | - Ventsislava Petrova
- Faculty of Biology (SU-BF), Sofia University “St. Kliment Ohridski”, 1504 Sofia, Bulgaria; (V.P.); (E.P.); (A.T.)
| | - Bogdan Ranguelov
- Institute of Physical Chemistry “Rostislav Kaishev”, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (B.R.); (S.A.-V.)
| | - Stella Atanasova-Vladimirova
- Institute of Physical Chemistry “Rostislav Kaishev”, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (B.R.); (S.A.-V.)
| | - Dimitar Kaynarov
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
| | - Ivanka Stoycheva
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
| | - Emiliya Pisareva
- Faculty of Biology (SU-BF), Sofia University “St. Kliment Ohridski”, 1504 Sofia, Bulgaria; (V.P.); (E.P.); (A.T.)
| | - Anna Tomova
- Faculty of Biology (SU-BF), Sofia University “St. Kliment Ohridski”, 1504 Sofia, Bulgaria; (V.P.); (E.P.); (A.T.)
| | - Angelina Kosateva
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
| | - Lyudmila Velkova
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
| | - Aleksandar Dolashki
- Institute of Organic Chemistry with Center for Phytochemistry, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria; (P.D.); (K.M.); (P.P.); (D.K.); (I.S.); (A.K.); (L.V.)
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Chrzanowska A, Nosach LV, Derylo-Marczewska A. Nanostructure and thermal characteristics of silica/human serum albumin systems based on a modified nanosilica entero-vulnerosorbent. Phys Chem Chem Phys 2024; 26:4240-4261. [PMID: 38230691 DOI: 10.1039/d3cp04014c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Entero-vulnerosorbents based on geometrically modified (GM) (mechanical treatment at different times, tMT = 1, 4, and 7 h) fumed nanosilica A300 (NS) and protein molecules (human serum albumin/GM-nanosilica systems) were characterized with a focus on their surface, morphology, topography, and thermal properties. Microscopic, spectroscopic, and analytical techniques, including atomic force microscopy (AFM), optical profilometry (OP), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and elemental analysis (CHN), were used. The differentiation in the surface morphology, micro-nanoroughness, surface chemistry, thermal properties of the silica support, and protein/nanosilica systems were found. AFM, OP, and HRTEM microscopic methods showed that the albumin/silica composite surface is less rough, wavy, and asymmetrical; it is also smoother, flat, and homogeneous because of the formation of a continuous layer of a protein film on the support surface. CHN, XPS, and S/TEM-EDX analysis showed that HSA adsorbed on the unmodified and GM-treated silica carrier led to variations in the physical and chemical features of materials (elemental composition, element concentration, chemical states, chemical bonds between enzyme molecules, and silica surface). Thermal studies were carried out using a thermogravimetric technique linked with a quadrupole mass spectrometer (TG/DTG/DSC-QMS). The degradation of the HSA/nanosilica system is a two-stage process that takes place within the temperature range 160-450-900 °C.
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Affiliation(s)
- Agnieszka Chrzanowska
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031, Lublin, Poland.
| | - Liudmyla V Nosach
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17 General Naumov Str., Kyiv 03164, Ukraine
| | - Anna Derylo-Marczewska
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031, Lublin, Poland.
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Chrzanowska A, Nosach L, Voronin E, Derylo-Marczewska A, Wasilewska M. Effect of geometric modification of fumed nanoscale silica for medical applications on adsorption of human serum albumin: Physicochemical and surface properties. Int J Biol Macromol 2022; 220:1294-1308. [DOI: 10.1016/j.ijbiomac.2022.08.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/18/2022] [Accepted: 08/29/2022] [Indexed: 11/05/2022]
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Kuschnerus I, Giri K, Ruan J, Huang Y, Bedford N, Garcia-Bennett A. On the growth of the soft and hard protein corona of mesoporous silica particles with varying morphology. J Colloid Interface Sci 2022; 612:467-478. [PMID: 34999551 DOI: 10.1016/j.jcis.2021.12.161] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 12/23/2021] [Accepted: 12/24/2021] [Indexed: 02/08/2023]
Abstract
The characterization of the protein corona has become an essential part of understanding the biological properties of nanomaterials. This is also important in the case of mesoporous silica particles intended for use as drug delivery excipients. A combination of scattering, imaging and protein characterization techniques is used here to assess the effect of particle shape and growth of the reversible (soft) and strongly bound (hard) corona of three types mesoporous silica particles with different aspect ratios. Notable differences in the protein composition, surface coverage and particle agglomeration of the protein corona-particle complex point to specific protein adsorption profiles highly dependent on exposed facets and aspect ratio. Spherical particles form relatively homogeneous soft and hard protein coronas (approx.10 nm thick) with higher albumin content. In contrast to rod-shaped and faceted particles, which possess soft coronas weakly bound to the external surface and influenced to a greater extent by the particle morphology. These differences are likely important contributors to observed changes in biological properties, such as cell viability and immunological behaviour, with mesoporous silica particle shape.
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Affiliation(s)
- Inga Kuschnerus
- Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW, Australia; School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Kalpeshkumar Giri
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, Australia; Centre for Nanoscale and BioPhotonics, Macquarie University, Sydney, NSW, Australia
| | - Juanfang Ruan
- Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW, Australia; School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Yanan Huang
- Department of Chemistry, Fudan University, Shanghai, China
| | - Nicholas Bedford
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Alfonso Garcia-Bennett
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, Australia; Centre for Nanoscale and BioPhotonics, Macquarie University, Sydney, NSW, Australia.
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Adsorption, viscosity and thermal behaviour of nanosized proteins with different internal stability immobilised on the surface of mesoporous activated biocarbon obtained from the horsetail herb precursor. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-021-01759-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
AbstractThe thermal analysis methods were used for the description of the adsorption behaviour of selected proteins differing in internal stability (ovalbumin (OVA) and lysozyme (LSZ)). These proteins were immobilised on the surface of activated biocarbon obtained from the horsetail herb precursor. The values of the hydrodynamic radius of both biopolymer macromolecules in the solution were determined by the use of the viscosimetry method. This parameter is important for the specification of the possibility of proteins nano-molecules to penetrate the nano-pores of the adsorbent which leads to the increase of biopolymers adsorption. Such behaviour is observed at the pH value which is very close to the pI value of specific biopolymer (the greatest adsorption of proteins on the activated carbon surface occurs- at pH 5 for OVA being 323 mg/g, as well as at pH 11 for LSZ which is 464 mg/g). Under such conditions, the proteins macromolecules assume conformations characterized by the lowest values of hydrodynamic radius, i.e. 2.76 nm for OVA and 1.07 nm for LSZ. The data obtained from the analysis of gaseous products of thermal decomposition of the samples indicated the types of biocarbon surface groups as well as the enabled specification of the protein macromolecules adsorption mechanism.
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Matusiak J, Maciołek U, Kosińska-Pezda M, Sternik D, Orzeł J, Grządka E. Textural and Thermal Properties of the Novel Fucoidan/Nano-Oxides Hybrid Materials with Cosmetic, Pharmaceutical and Environmental Potential. Int J Mol Sci 2022; 23:ijms23020805. [PMID: 35054994 PMCID: PMC8775903 DOI: 10.3390/ijms23020805] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/07/2022] [Accepted: 01/09/2022] [Indexed: 02/04/2023] Open
Abstract
The main purpose of the research was to obtain and study hybrid materials based on three different nano-oxides commonly used in the cosmetic and pharmaceutical industries: Al2O3, TiO2, and ZnO, with the natural bioactive polysaccharide fucoidan. Since the mentioned oxides are largely utilized by industry, there is no doubt that the presented studies are important from an environmental point of view. On the basis of the textural studies (dynamic light scattering DLS, low temperature nitrogen adsorption, X-ray diffraction analysis XRD, scanning electron microscopy SEM) it was proved that the properties of the hybrid materials differ from the pure components of the system. Moreover, the advanced thermal analysis (TG-DTG-DSC) combined with the evolved gas analysis using Fourier transformed infrared spectroscopy (FTIR) and mass spectrometry were applied to describe the thermal decomposition of fucoidan, oxides and hybrid materials. It was found that the interactions between the polymer and the oxides results in the formation of the hybrid materials due to the functionalization of the nanoparticles surface, and that their thermal stability increased when compared to the pure substrates. Such findings definitely fill the literature void regarding the fucoidan based hybrid materials and help the industrial formulators in the preparation of new products.
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Affiliation(s)
- Jakub Matusiak
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
- Correspondence:
| | - Urszula Maciołek
- Analytical Laboratory, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland;
| | - Małgorzata Kosińska-Pezda
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, Rzeszow University of Technology, 35-959 Rzeszow, Poland;
| | - Dariusz Sternik
- Department of Physical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland;
| | - Jolanta Orzeł
- Department of Radiochemistry and Environmental Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland; (J.O.); (E.G.)
| | - Elżbieta Grządka
- Department of Radiochemistry and Environmental Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland; (J.O.); (E.G.)
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Li K, Li Y, Wang X, Cui M, An B, Pu J, Liu J, Zhang B, Ma G, Zhong C. Diatom-inspired multiscale mineralization of patterned protein-polysaccharide complex structures. Natl Sci Rev 2021; 8:nwaa191. [PMID: 34691703 PMCID: PMC8363331 DOI: 10.1093/nsr/nwaa191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/27/2020] [Accepted: 08/02/2020] [Indexed: 01/11/2023] Open
Abstract
Marine diatoms construct their hierarchically ordered, three-dimensional (3D) external structures called frustules through precise biomineralization processes. Recapitulating the remarkable architectures and functions of diatom frustules in artificial materials is a major challenge that has important technological implications for hierarchically ordered composites. Here, we report the construction of highly ordered, mineralized composites based on fabrication of complex self-supporting porous structures-made of genetically engineered amyloid fusion proteins and the natural polysaccharide chitin-and performing in situ multiscale protein-mediated mineralization with diverse inorganic materials, including SiO2, TiO2 and Ga2O3. Subsequently, using sugar cubes as templates, we demonstrate that 3D fabricated porous structures can become colonized by engineered bacteria and can be functionalized with highly photoreactive minerals, thereby enabling co-localization of the photocatalytic units with a bacteria-based hydrogenase reaction for a successful semi-solid artificial photosynthesis system for hydrogen evolution. Our study thus highlights the power of coupling genetically engineered proteins and polysaccharides with biofabrication techniques to generate hierarchically organized mineralized porous structures inspired by nature.
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Affiliation(s)
- Ke Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yingfeng Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xinyu Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Mengkui Cui
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Bolin An
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jiahua Pu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jintao Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Boyang Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Guijun Ma
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Chao Zhong
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Center for Materials Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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Palladium and silk fibroin-containing magnetic nano-biocomposite: a highly efficient heterogeneous nanocatalyst in Heck coupling reactions. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04462-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Chrzanowska A, Derylo-Marczewska A, Wasilewska M. Mesocellular Silica Foams (MCFs) with Tunable Pore Size as a Support for Lysozyme Immobilization: Adsorption Equilibrium and Kinetics, Biocomposite Properties. Int J Mol Sci 2020; 21:E5479. [PMID: 32751874 PMCID: PMC7432670 DOI: 10.3390/ijms21155479] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 11/16/2022] Open
Abstract
The effect of the porous structure of mesocellular silica foams (MCFs) on the lysozyme (LYS) adsorption capacity, as well as the rate, was studied to design the effective sorbent for potential applications as the carriers of biomolecules. The structural (N2 adsorption/desorption isotherms), textural (SEM, TEM), acid-base (potentiometric titration), adsorption properties, and thermal characteristics of the obtained lysozyme/silica composites were studied. The protein adsorption equilibrium and kinetics showed significant dependence on silica pore size. For instance, LYS adsorption uptake on MCF-6.4 support (pore diameter 6.4 nm) was about 0.29 g/g. The equilibrium loading amount of LYS on MCF-14.5 material (pore size 14.5 nm) increased to 0.55 g/g. However, when the pore diameter was larger than 14.5 nm, the LYS adsorption value systematically decreased with increasing pore size (e.g., for MCF-30.1 was only 0.27 g/g). The electrostatic attractive interactions between the positively charged lysozyme (at pH = 7.4) and the negatively charged silica played a significant role in the immobilization process. The differences in protein adsorption and surface morphology for the biocomposites of various pore sizes were found. The thermal behavior of the studied bio/systems was conducted by TG/DSC/FTIR/MS coupled method. It was found that the thermal degradation of lysozyme/silica composites was a double-stage process in the temperature range 165-420-830 °C.
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Affiliation(s)
- Agnieszka Chrzanowska
- Department of Physical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland; (A.D.-M.); (M.W.)
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Protein-Silica Hybrid Submicron Particles: Preparation and Characterization. CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s42250-020-00138-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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