Esterification of oleic acid with methanol by immobilized lipase on wrinkled silica nanoparticles with highly ordered, radially oriented mesochannels

Pang, Jinli; Zhou, Guowei; Liu, Ruirui; Li, Tianduo

doi:10.1016/j.msec.2015.09.088

Cited by 31 publications

(14 citation statements)

References 44 publications

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“…WSNs have wrinkles that widens radially outward enhancing the accessibility of functional materials inside the pores and reducing pore blocking. They were used for lipase [ 27 ] and β-glucosidase [ 28 , 29 , 30 ] immobilization. Lipase immobilized in WSNs showed higher activity than the free enzyme.…”

Section: Introductionmentioning

confidence: 99%

“…Lipase immobilized in WSNs showed higher activity than the free enzyme. The better performance was attributed to the radially aligned mesopores of WSNs, allowing dispersion of dispersing active catalytic sites on large internal surface and pores [ 27 ]. The immobilised β-glucosidase showed better catalytic performance than free enzyme and high thermal and operational stability.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Cellulase on Wrinkled Silica Nanoparticles with Enhanced Inter-Wrinkle Distance

et al. 2020

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Mesoporous silica materials offer a unique opportunity for enzyme immobilization thanks to their properties, such as tuneable pore size, large surface area and easy functionalization. However, a significant enhancement of cellulase enzyme activity entrapped inside the silica pores still represents a challenge. In this work, we immobilized cellulase by adsorption on wrinkled silica nanoparticles (WSNs), obtaining an active and stable biocatalyst. We used pentanol as co-solvent to synthesize WSNs with enhanced inter-wrinkle distance in order to improve cellulase hosting. The physical-chemical and morphological characterization of WSNs and cellulase/WSNs was performed by thermogravimetric (TG), Fourier transform infrared (FT-IR), and transmission electron microscopy (TEM) analyses. The obtained results showed that this matrix generates a favourable microenvironment for hosting cellulase. The results of the catalytic assays and operational stability confirmed the key role of size, morphology and distribution of the pores in the successful outcome of the cellulase immobilization process. The immobilization procedure used allowed preserving most of the secondary structure of the enzyme and, consequently, its catalytic activity. Moreover, the same value of glucose yield was observed for five consecutive runs, showing a high operational stability of the biocatalyst.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorption of Cellulase on Wrinkled Silica Nanoparticles with Enhanced Inter-Wrinkle Distance

et al. 2020

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“…Therefore, by differentiating the reactions of esterification and transesterification in obtaining esters, it can be understood that catalysts in these reactions produce a change in the catalytic medium (PANG et al, 2016). By comparing the samples, it can be analyzed that the reaction occurred, and there was ester production (CEA et al, 2019).…”

Section: Catalytic Esterificationmentioning

confidence: 99%

Immobilization of CalB Lipase by adsorption on magnetic nanoparticles: A heterogeneous biocatalysis/ Imobilização da lipase CalB por adsorção em nanopartículas magnéticas: um biocatalisador heterogêneo

Brandão¹,

Ferreira²,

Maia³

et al. 2021

BJDV

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Iron magnetic nanoparticles (Fe3O4) were evaluated as adsorption preparative heterofunctional support for the immobilization of lipase B from Candida antarctica (CALB). Heterogeneous magnetic catalysts are easy to recover by the magnetic field, which may optimize operational cost and enhance the purity of the products. The nanoparticles were produced by the co-precipitation method. Modifications were carried out on the nanoparticles' surfaces with aminopropyltriethoxysilane (APTS). The adsorption was evaluated for 3.0 mg protein/g of support in the presence of 5mM sodium phosphate buffer, pH 7.0, at 25 °C and 0.5h of immobilization. In a solvent-free medium, under 37 °C, the biocatalyst prepared has shown activity of 2.2 U/g for the esterification of oleic acid after 0.5h, 37 kHz, and 300 W. The results obtained with CALB adsorbed onto magnetic iron nanoparticles were compared with those of lipase B from Candida antartica adsorbed onto acrylic resin (Novozym® 435). In this regard, under the same reactional conditions, Novozym® 435 has presented activity of 2.9 U/g.

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“…Pang et al. prepared DFNS by modifying the standard DFNS synthetic protocol and by using polyvinylpyrrolidone (PVP) as the stabilizing agent for particle growth . They then immobilized Candida rugosa lipase (CRL) on the wrinkled silica spheres.…”

Section: Catalysis Using Dfnsmentioning

confidence: 99%

Dendritic Fibrous Nanosilica for Catalysis, Energy Harvesting, Carbon Dioxide Mitigation, Drug Delivery, and Sensing

2017

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Morphology‐controlled nanomaterials such as silica play a crucial role in the development of technologies for addressing challenges in the fields of energy, environment, and health. After the discovery of Stöber silica, followed by that of mesoporous silica materials, such as MCM‐41 and SBA‐15, a significant surge in the design and synthesis of nanosilica with various sizes, shapes, morphologies, and textural properties has been observed in recent years. One notable invention is dendritic fibrous nanosilica, also known as KCC‐1. This material possesses a unique fibrous morphology, unlike the tubular porous structure of various conventional silica materials. It has a high surface area with improved accessibility to the internal surface, tunable pore size and pore volume, controllable particle size, and, importantly, improved stability. Since its discovery, a large number of studies have been reported concerning its use in applications such as catalysis, solar‐energy harvesting, energy storage, self‐cleaning antireflective coatings, surface plasmon resonance‐based ultrasensitive sensors, CO2 capture, and biomedical applications. These reports indicate that dendritic fibrous nanosilica has excellent potential as an alternative to popular silica materials such as MCM‐41, SBA‐15, Stöber silica, and mesoporous silica nanoparticles. This Review provides a critical survey of the dendritic fibrous nanosilica family of materials, and the discussion includes the synthesis and formation mechanism, applications in catalysis and photocatalysis, applications in energy harvesting and storage, applications in magnetic and composite materials, applications in CO2 mitigation, biomedical applications, and analytical applications.

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Esterification of oleic acid with methanol by immobilized lipase on wrinkled silica nanoparticles with highly ordered, radially oriented mesochannels

Cited by 31 publications

References 44 publications

Adsorption of Cellulase on Wrinkled Silica Nanoparticles with Enhanced Inter-Wrinkle Distance

Adsorption of Cellulase on Wrinkled Silica Nanoparticles with Enhanced Inter-Wrinkle Distance

Immobilization of CalB Lipase by adsorption on magnetic nanoparticles: A heterogeneous biocatalysis/ Imobilização da lipase CalB por adsorção em nanopartículas magnéticas: um biocatalisador heterogêneo

Dendritic Fibrous Nanosilica for Catalysis, Energy Harvesting, Carbon Dioxide Mitigation, Drug Delivery, and Sensing

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