Functionalized kaolin as support for endoglucanase immobilization

Lima, Janaina de Souza; Costa, Flávia Nunes; Bastistella, Marcos Antônio; Araújo, Pedro Henrique Hermes de; Oliveira, Débora de

doi:10.1007/s00449-019-02113-w

Cited by 17 publications

(5 citation statements)

References 44 publications

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“…Clay was ground and sieved to size 200 mesh. The 4 g clay was soaked in 100 mL, HCl 0.1 M for 24 h and then dried at room temperature for 24 h. Modification of clay with APS followed previous research [23][24][25]. About 4 g of clay was dispersed in 200 mL of ethanol, then 4 g of APS, which had been dispersed into 50 mL ethanol.…”

Section: Modification Of Clay With Apsmentioning

confidence: 99%

Polyvinylidene Fluoride (PVDF)/Modified Clay Hybrid Membrane for Humic Acid and Methylene Blue Filtration

et al. 2023

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This research studied the impact of silanized clay modification on performance and antifouling Poly(vinylidene fluoride) (PVDF) membrane toward humic acid and methylene blue filtration. Clay modification was carried out by using 3-aminopropyltriethoxysilane (APS) to produce modified clay (Clay-APS). Hybrid membranes were prepared by phase inversion for humic acid and methylene blue filtration. Hybrid membranes were characterized by measuring surface hydrophilicity, water flux, rejection, and antifouling properties. Clay and Clay-APS modification increased hybrid membrane surface hydrophilicity, as indicated by increasing the β fraction and decreasing the water contact angle. The PVDF/Clay and PVDF/Clay-APS hybrid membranes showed high permeability and selectivity with the highest water flux values of 24.2 L m−2 h−1. The rejections for humic acid and methylene blue were 98.8 and 99.3%, respectively. The highest antifouling property was obtained from the PVDF/Clay-APS hybrid membrane, with a flux recovery ratio was 96.0%. The PVDF/Clay hybrid membrane performance and antifouling properties showed that the membranes have the potential for water treatment.

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Section: Modification Of Clay With Apsmentioning

confidence: 99%

Polyvinylidene Fluoride (PVDF)/Modified Clay Hybrid Membrane for Humic Acid and Methylene Blue Filtration

et al. 2023

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“…Moreover, it should ideally be rigid, thermally stable, chemically inert, water-insoluble, resistant toward microbial degradation and nontoxic [96]. Examples of such supports are cellulose [97], coconut fibers [98], kaolin [99], molecular sieves [100], silica [101] and agarose [102], which have been utilized in several different physical forms such as monoliths [103], supermagnetic nanoparticles [28,104,105] and hydrogels [106][107][108]. In wall-coated reactors, the enzyme can be immobilized directly on the reactor's walls or on a membrane [109][110][111], whereas in PBR, the supported-enzyme particles are packed in a glass column.…”

Section: Fundamentals Of Flow Biocatalysismentioning

confidence: 99%

Flow Biocatalysis: A Challenging Alternative for the Synthesis of APIs and Natural Compounds

Santi

Sancineto

Nascimento

et al. 2021

IJMS

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Biocatalysts represent an efficient, highly selective and greener alternative to metal catalysts in both industry and academia. In the last two decades, the interest in biocatalytic transformations has increased due to an urgent need for more sustainable industrial processes that comply with the principles of green chemistry. Thanks to the recent advances in biotechnologies, protein engineering and the Nobel prize awarded concept of direct enzymatic evolution, the synthetic enzymatic toolbox has expanded significantly. In particular, the implementation of biocatalysts in continuous flow systems has attracted much attention, especially from industry. The advantages of flow chemistry enable biosynthesis to overcome well-known limitations of “classic” enzymatic catalysis, such as time-consuming work-ups and enzyme inhibition, as well as difficult scale-up and process intensifications. Moreover, continuous flow biocatalysis provides access to practical, economical and more sustainable synthetic pathways, an important aspect for the future of pharmaceutical companies if they want to compete in the market while complying with European Medicines Agency (EMA), Food and Drug Administration (FDA) and green chemistry requirements. This review focuses on the most recent advances in the use of flow biocatalysis for the synthesis of active pharmaceutical ingredients (APIs), pharmaceuticals and natural products, and the advantages and limitations are discussed.

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“…A carriers are defined as a phase which act as a support either in solid, liquid or gelation form for cell entrapment which are different from substrate and the products [37]. Compared to other types of carrier such as foam and gel films, entrapment on a solid support especially in nanofibers has gained great attention because it allows easy separation and reuse of the products [38]. In electrospinning process, the entrapment of cells in nanofibers can be achieved by direct electrospinning of cells with other components such as polymers.…”

Section: Entrapment Principle Of Cells In Electrospun Nanofibersmentioning

confidence: 99%

Entrapment of Free Cells Within Electrospun Nanofibers: Mini Review on Parameters Influencing Nanofibers Characteristics and Cells Viability

et al. 2020

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Nanotechnology is a growing technology that has been recognized as vital and scientific with bioprocess development especially in dealing with usage of free cells. Limitations such as low bioavailability, storage instability and low substrate inhibition bound the application of free cells in various field thus leading researchers into focusing more on free cells immobilization system. With the increasing knowledge in nanomaterials fabrication techniques, the immobilization of free cells through entrapment approach in highly porous and the high surface area of nanofibers is becoming an interesting subject to be highlighted. The production of free cells entrapped in nanofibers via electrospinning in terms of quality and quantity is highly affected by the electrospinning operating parameters including solution formulation, ambient conditions, operating conditions of electrospinning machine and types of materials used. Hence, this review paper will provide an overview of the operating conditions involved in electrospinning of cells through entrapment process which affect the characteristics of the electrospun nanofibers produced and the viability or growth of cells when entrapped in the electrospun nanofibers mats.

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Functionalized kaolin as support for endoglucanase immobilization

Cited by 17 publications

References 44 publications

Polyvinylidene Fluoride (PVDF)/Modified Clay Hybrid Membrane for Humic Acid and Methylene Blue Filtration

Polyvinylidene Fluoride (PVDF)/Modified Clay Hybrid Membrane for Humic Acid and Methylene Blue Filtration

Flow Biocatalysis: A Challenging Alternative for the Synthesis of APIs and Natural Compounds

Entrapment of Free Cells Within Electrospun Nanofibers: Mini Review on Parameters Influencing Nanofibers Characteristics and Cells Viability

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