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Mashhadi H, Tabibiazar M, Nourabi A, Roufegarinejad L. Evaluation of the effect of partial hydrolysis ethyl cellulose on physicochemical properties of soybean oil oleogel. Int J Food Sci Technol 2023. [DOI: 10.1111/ijfs.16267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hesam Mashhadi
- Student Research Committee Tabriz University of Medical Sciences Tabriz Iran
- Department of Food Science and Technology, Faculty of Nutrition and Food Science Tabriz University of Medical Sciences Tabriz Iran
| | - Mahnaz Tabibiazar
- Department of Food Science and Technology, Faculty of Nutrition and Food Science Tabriz University of Medical Sciences Tabriz Iran
| | - Atefeh Nourabi
- Department of Food Science and Technology, Faculty of Nutrition and Food Science Tabriz University of Medical Sciences Tabriz Iran
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Polyethylene Glycol Coated Magnetic Nanoparticles: Hybrid Nanofluid Formulation, Properties and Drug Delivery Prospects. NANOMATERIALS 2021; 11:nano11020440. [PMID: 33572244 PMCID: PMC7915107 DOI: 10.3390/nano11020440] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 12/24/2022]
Abstract
Magnetic nanoparticles (MNPs) are widely used materials for biomedical applications owing to their intriguing chemical, biological and magnetic properties. The evolution of MNP based biomedical applications (such as hyperthermia treatment and drug delivery) could be advanced using magnetic nanofluids (MNFs) designed with a biocompatible surface coating strategy. This study presents the first report on the drug loading/release capability of MNF formulated with methoxy polyethylene glycol (referred to as PEG) coated MNP in aqueous (phosphate buffer) fluid. We have selected MNPs (NiFe2O4, CoFe2O4 and Fe3O4) coated with PEG for MNF formulation and evaluated the loading/release efficacy of doxorubicin (DOX), an anticancer drug. We have presented in detail the drug loading capacity and the time-dependent cumulative drug release of DOX from PEG-coated MNPs based MNFs. Specifically, we have selected three different MNPs (NiFe2O4, CoFe2O4 and Fe3O4) coated with PEG for the MNFs and compared their variance in the loading/release efficacy of DOX, through experimental results fitting into mathematical models. DOX loading takes the order in the MNFs as CoFe2O4 > NiFe2O4 > Fe3O4. Various drug release models were suggested and evaluated for the individual MNP based NFs. While the non-Fickian diffusion (anomalous) model fits for DOX release from PEG coated CoFe2O4, PEG coated NiFe2O4 NF follows zero-order kinetics with a slow drug release rate of 1.33% of DOX per minute. On the other hand, PEG coated NiFe2O4 follows zero-order DOX release. Besides, several thermophysical properties and magnetic susceptibility of the MNFs of different concentrations have been studied by dispersing the MNPs (NiFe2O4, CoFe2O4 and Fe3O4) in the base fluid at 300 K under ultrasonication. This report on the DOX loading/release capability of MNF will set a new paradigm in view that MNF can resolve problems related to the self-heating of drug carriers during mild laser treatment with its thermal conducting properties.
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Woldeyes MA, Qi W, Razinkov VI, Furst EM, Roberts CJ. Temperature Dependence of Protein Solution Viscosity and Protein-Protein Interactions: Insights into the Origins of High-Viscosity Protein Solutions. Mol Pharm 2020; 17:4473-4482. [PMID: 33170708 DOI: 10.1021/acs.molpharmaceut.0c00552] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Protein solution viscosity (η) as a function of temperature was measured at a series of protein concentrations under a range of formulation conditions for two monoclonal antibodies (MAbs) and a globular protein (aCgn). Based on theoretical arguments, a strong temperature dependence for protein-protein interactions (PPI) indicates highly anisotropic, short-ranged attractions that could lead to higher solution viscosities. The semi-empirical Ross-Minton model was used to determine the apparent intrinsic viscosity, shape, and "crowding" factors for each protein as a function of temperature and formulation conditions. The apparent intrinsic viscosity was independent of temperature for aCgn, while a slight decrease with increasing temperature was observed for the MAbs. The temperature dependence of solution viscosity was analyzed using the Andrade-Eyring equation to determine the effective activation energy of viscous flow (Ea,η). While Ea,η values were different for each protein, they were independent of formulation conditions for a given protein. PPI were quantified via the osmotic second virial coefficient (B22) and the protein diffusion interaction parameter (kD) as a function of temperature under the same formulation conditions as the viscosity measurements. Net interactions ranged from strongly attractive to repulsive by changing formulation pH and ionic strength for each protein. Overall, larger activation energies for PPI corresponded to larger activation energies for η, and those were predictive of the highest η values at higher protein concentrations.
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Affiliation(s)
- Mahlet A Woldeyes
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Wei Qi
- Drug Product Development, Amgen Inc., Thousand Oaks, California 91320, United States
| | - Vladimir I Razinkov
- Drug Product Development, Amgen Inc., Thousand Oaks, California 91320, United States
| | - Eric M Furst
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Christopher J Roberts
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
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Hammi KM, Hammami M, Rihouey C, Le Cerf D, Ksouri R, Majdoub H. Ultrasonication of Polysaccharides from Tunisian Zizyphus lotus Fruit: Emulsifying Capacities, Rheological Properties and Antioxidant activities. CHEMISTRY AFRICA 2020. [DOI: 10.1007/s42250-020-00117-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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A Comparative Evaluation of Physicochemical Properties and Photocatalytic Efficiencies of Cerium Oxide and Copper Oxide Nanofluids. Catalysts 2019. [DOI: 10.3390/catal10010034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Copper oxide (CuO) and cerium oxide (CeO2) of various concentrations have been prepared through an ultrasonically assisted dispersion of CuO and CeO2 nanoparticles (NPs) in which water and nanofluids (NFs) were formulated. The morphological properties of the CuO and CeO2 NPs are reported. Few of the physicochemical properties that can influence the photocatalytic activities of the NFs are evaluated, such as viscosity, activation energy, density, thermal conductivity, electrical conductivity, alternating current (AC) conductivity, pH, stability, refractive index and optical band gap of the CuO and CeO2 NFs. Viscosity studies have been made at four different temperatures (303 K, 308 K, 313 K and 318 K) and the activation energy is calculated and compared between the CuO and CeO2 NFs. The thermal conductivity of the two NFs is calculated and compared. Electrical conductivity is measured for CuO and CeO2 NFs using an impedance analyzer at different frequencies at 303 K. The dielectric constant and AC conductivity were studied. The electrical conductivity and pH of the prepared NFs are measured and the results are compared. The stability of the NFs is determined from Zeta potential values obtained from dynamic light scattering measurements. UV-Visible diffuse reflectance measurements were used to deduce the optical bandgap of the respective metal oxide NPs in the NFs. The photocatalytic efficiencies of the CuO NFs and CeO2 NFs were evaluated using methylene blue (MB) as the model dye. The rate constant for the photodegradation of MB was higher for CuO NF as compared CeO2 NF and also higher than simple NPs-based photocatalysts. A plausible explanation for the role of NFs over the simple NPs-based photocatalytic solution is presented.
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Yi HL, Lai LJ, Jiang JS, Hua CC. Ethylcellulose Colloids Incubated in Dilute Solution. J Phys Chem B 2017; 121:638-648. [PMID: 28035827 DOI: 10.1021/acs.jpcb.6b09976] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study revealed, for the first time, that dilute solutions made of a representative series of commercial ethylcellulose (EC; molecular weights 77-305 kDa, provided by the manufacturer) and four distinct organic solvents (α-terpineol, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate (TPIB), tetrahydrofuran (THF), and benzene) can be used to foster stabilized, nearly monodisperse, nanoscale (pure) polymer colloid, with no isolated chains present. Using combined light-scattering (dynamic light scattering, static form factor, and Zimm/Berry plots) and intrinsic viscosity (Tanglertpaibul-Rao, Huggins, and Kraemer plots) analyses, the structural features of colloidal EC aggregates, ρ = ⟨Rg⟩/⟨Rh⟩ = 0.67-0.83, were first shown to be described rather well by the theory on colloidal spheres (⟨Rg⟩ and ⟨Rh⟩ being the mean radius of gyration and the hydrodynamic radius, respectively). An empirical scaling law relating the intrinsic viscosity to the mean colloid size can thus be established: [η]H = (1.7 ± 0.2) ×10-3 ⟨Rh⟩(2.1±0.3) ([η]H and ⟨Rh⟩ in units of mL/g and nm, respectively), which may be contrasted with the Zimm model for isolated Gaussian coils, [η]H ∼ ⟨Rh⟩1, and the Einstein equation for isolated solid spheres, [η]H ∼ ⟨Rh⟩0. Optical microscopy images of thin films cast from different EC solutions clearly revealed the abundance of micron EC agglomerates, contrary to the uniform thin-film morphology produced from a dilute polystyrene solution, which serves as a reference solution composed of isolated chains. These observations point to new features and applications of EC dispersions.
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Affiliation(s)
- Han-Liou Yi
- Department of Chemical Engineering, National Chung Cheng University , Chiayi 62102, Taiwan, ROC
| | - Liang-Je Lai
- Department of Chemical Engineering, National Chung Cheng University , Chiayi 62102, Taiwan, ROC
| | - Jung-Shiun Jiang
- Department of Chemical Engineering, National Chung Cheng University , Chiayi 62102, Taiwan, ROC
| | - Chi-Chung Hua
- Department of Chemical Engineering, National Chung Cheng University , Chiayi 62102, Taiwan, ROC
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Durand A. Aqueous solutions of amphiphilic polysaccharides: Concentration and temperature effect on viscosity. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2007.02.031] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Patel BK, Sinha VK, Makhija KK, Ray A, Trivedi HC. Newtonian viscosity behavior of dilute to moderately concentrated solutions of cellulose acetate butyrate. J MACROMOL SCI B 2006. [DOI: 10.1080/00222349008230379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- B. K. Patel
- b Department of Chemistry , V.P. and R.P.T.P. Science College , Vallabh Vidyanagar
| | - V. K. Sinha
- a Department of Chemistry , Sardar Patel University , Vallabh Vidyanagar, 388120, Gujarat State, India
| | - K. K. Makhija
- a Department of Chemistry , Sardar Patel University , Vallabh Vidyanagar, 388120, Gujarat State, India
| | - A. Ray
- a Department of Chemistry , Sardar Patel University , Vallabh Vidyanagar, 388120, Gujarat State, India
| | - H. C. Trivedi
- a Department of Chemistry , Sardar Patel University , Vallabh Vidyanagar, 388120, Gujarat State, India
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Niezette J, Vanderschueren J, Yianakopoulos G, Desreux V, Hadjichristidis N. Temperature dependence of the viscosity of dilute solutions of poly(2-chlorophenyl methacrylate) and poly(2,4,5-trichlorophenyl methacrylate) in various solvents. Eur Polym J 1990. [DOI: 10.1016/0014-3057(90)90128-q] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liouni M, Touloupis C, Hadjichristidis N, Mays JW. Viscosity-temperature relationships for dilute solutions of linear and star polyisoprenes. Eur Polym J 1990. [DOI: 10.1016/0014-3057(90)90057-b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kamide K, Saito M, Kowsaka K. Temperature Dependence of Limiting Viscosity Number and Radius of Gyration for Cellulose Dissolved in Aqueous 8% Sodium Hydroxide Solution. Polym J 1987. [DOI: 10.1295/polymj.19.1173] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Suzuki H, Miyazaki Y, Kamide K. Temperature dependence of limiting viscosity number and radius of gyration of cellulose diacetate in acetone. Eur Polym J 1980. [DOI: 10.1016/0014-3057(80)90037-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Niezette J, Hadjichristidis N, Desreux V. Temperature dependence of the viscosity of dilute poly(β-naphthyl methacrylate) solutions. Eur Polym J 1977. [DOI: 10.1016/0014-3057(77)90046-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kurata M, Stockmayer WH. Intrinsic viscosities and unperturbed dimensions of long chain molecules. ADVANCES IN POLYMER SCIENCE 1963. [DOI: 10.1007/bf02189379] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Die viscosimetrische Molekulargewichtsbestimmung von Polymeren. ADVANCES IN POLYMER SCIENCE 1961. [DOI: 10.1007/bf02189384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Moore W, Brown A. Viscosity-temperature relationships for dilute solutions of cellulose derivatives. ACTA ACUST UNITED AC 1959. [DOI: 10.1016/0095-8522(59)90058-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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