Immobilization of xylose reductase enzyme on cysteine-functionalized Murraya koenigii mediated magnetite nanoparticles

Muthukumar, Harshiny; Malla, Shwethashree; Matheswaran, Manickam; Gummadi, Sathyanarayana N.

doi:10.1016/j.matlet.2019.127125

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…Weak bands at 2700–3000 cm −1 in modified MNP spectra were related to the C-H stretching vibration that is also found in pure APTES, CAS, and Cys. However, the zeta potential of the nanocomposites was expected to be negative for MNP, MNP+Cys, and MNP+CAS in the ranges of −31.9 to −45.9 mV [ 27 , 28 ], −30 to −60 mV [ 29 , 30 ], and −40 mV [ 31 ], respectively. For the APTES-functionalized nanocomposites, positive zeta potentials were expected in the range from 29.1 to 47.5 mV [ 32 , 33 ] evaluated at neutral pH values (7.0 to 7.5).…”

Section: Resultsmentioning

confidence: 99%

Toxicity of Modified Magnetite-Based Nanocomposites Used for Wastewater Treatment and Evaluated on Zebrafish (Danio rerio) Model

et al. 2022

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Magnetite-based nanocomposites are used for biomedical, industrial, and environmental applications. In this study, we evaluated their effects on survival, malformation, reproduction, and behavior in a zebrafish animal model. Nanoparticles were synthesized by chemical coprecipitation and were surface-functionalized with (3-aminopropyl) triethoxysilane (APTES), L-cysteine (Cys), and 3-(triethoxysilyl) propylsuccinic anhydride (CAS). All these nanocomposites were designed for the treatment of wastewater. Zebrafish embryos at 8 h post-fertilization (hpf) and larvae at 4 days post-fertilization (dpf) were exposed to the magnetic nanocomposites Fe3O4 MNP (magnetite), MNP+APTES, MNP+Cys, MNP+APTES+Cys, and MNP+CAS, at concentrations of 1, 10, 100, and 1000 µg/mL. Zebrafish were observed until 13 dpf, registering daily hatching, survival, and malformations. Behavior was tested at 10 dpf for larvae, and reproduction was analyzed later in adulthood. The results showed that the toxicity of the nanocomposites used were relatively low. Exploratory behavior tests showed no significant changes. Reproduction in adults treated during development was not affected, even at concentrations above the OECD recommendation. Given the slight effects observed so far, these results suggest that nanocomposites at the concentrations evaluated here could be a viable alternative for water remediation because they do not affect the long-term survival and welfare of the animals.

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Section: Resultsmentioning

confidence: 99%

Toxicity of Modified Magnetite-Based Nanocomposites Used for Wastewater Treatment and Evaluated on Zebrafish (Danio rerio) Model

et al. 2022

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“…Kumar and Yadav [35] revealed that murraya koenigii had strong adsorption, as shown by the high electronegativity, binding, and adsorption energies. The kinetic studies revealed that murraya koenigii mediated magnetite nanoparticles had an increased binding affinity for the murraya koenigii substances [36]. However, works of literature regarding the effect of incorporating murraya koenigii as filler are limited and need to be explored.…”

Section: Morphology and Physical Properties Of Murraya Koenigiimentioning

confidence: 99%

Enhanced Mechanical and Thermal Properties of Alkali-Treated Coir Fibres Incorporated with Murraya Koenigii: A Comparative Study of Mono-Layer and Tri-Layer Biocomposites

Lim,

Bachok,

Talib

2024

AAES

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This study examined the surface morphology and thermal behaviour of the coir fibres incorporated with murraya koenigii before and after alkaline treatment. The mechanical properties of biocomposites reinforced by the untreated fibres, treated fibres, mono-layer and tri-layer treated fibres incorporated with murraya koenigii were systematically investigated. The experimental results showed significant enhancements in tensile strength, flexural strength, hardness, and impact resistance of the biocomposites reinforced by treated fibres. Notably, the alkaline treatment has produced a rougher surface on coir fibres, promoting improved mechanical interlocking between the fibres and the polyethene matrix. These effects become more significant when murraya koenigii particles are incorporated into the fibres. It was found that the tri-layer treated fibres incorporated with murraya koenigii biocomposites showed higher tensile and flexural strength, superior hardness and impact strength when compared to the mono-layer reinforcement biocomposites. At higher temperatures, the treated fibres showed better thermal stability than the untreated fibres and polyethene. Incorporating murraya koenigii particles increased the thermal resistance of the treated fibres, revealing the potential of this green synthesis approach for the development of thermally stable natural fibre composites.

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“…Several studies have shown that magnetite nanoparticles exhibit great potential for the development of new materials, mainly due to their magnetic properties and the possibility of functionalizing their surface with different agents such as enzymes [ 8 ], biopolymers [ 9 ], organic particles [ 10 ], chelating moieties [ 11 ], and alkoxysilanes [ 12 ]. Similarly, silica nanoparticles have drawn significant attention due to their stability, low toxicity, and ability to be functionalized with a range of molecules and polymers, which can form improved biomaterials from various hybrid nanomaterials [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Functionalized Bionanocompounds with Ice Nucleation Protein for Freezing Applications

Fuentes

Osma

2023

Polymers

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The objective of this study was to assess the effectiveness of functionalized bionanocompounds with ice nucleation protein (INP) as a novel approach for freezing applications in terms of how much energy is used during each step of freezing when water bionanocompound solutions were compared with pure water. According to the results of the manufacturing analysis, water required 28 times less energy than the silica + INA bionanocompound and 14 times less than the magnetite + INA bionanocompound. These findings showed that water used the least energy during the manufacturing process. In order to determine the associated environmental implications, an analysis of the operating stage was also conducted, taking the defrosting time of each bionanocompound during a 4 h work cycle into account. Our results showed that bionanocompounds may substantially reduce the environmental effects by achieving a 91% reduction in the impact after their use during all four work cycles in the operation stage. Additionally, given the energy and raw materials needed in this process, this improvement was more significant than at the manufacturing stage. The results from both stages indicated that, when compared with water, the magnetite + INA bionanocompound and the silica + INA bionanocompound would save an estimated 7% and 47% of total energy, respectively. The study’s findings also demonstrated the great potential for using bionanocompounds in freezing applications to reduce the effects on the environment and human health.

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Immobilization of xylose reductase enzyme on cysteine-functionalized Murraya koenigii mediated magnetite nanoparticles

Cited by 7 publications

References 9 publications

Toxicity of Modified Magnetite-Based Nanocomposites Used for Wastewater Treatment and Evaluated on Zebrafish (Danio rerio) Model

Toxicity of Modified Magnetite-Based Nanocomposites Used for Wastewater Treatment and Evaluated on Zebrafish (Danio rerio) Model

Enhanced Mechanical and Thermal Properties of Alkali-Treated Coir Fibres Incorporated with Murraya Koenigii: A Comparative Study of Mono-Layer and Tri-Layer Biocomposites

Life Cycle Assessment of Functionalized Bionanocompounds with Ice Nucleation Protein for Freezing Applications

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