Adsorption of tannase from Aspergillus ficuum to carboxyl-functionalized multi-walled carbon nanotubes

Article Biochemistry & Molecular Biology

Structural diversity and substrate preferences of three tannase enzymes encoded by the anaerobic bacterium Clostridium butyricum

Amanda Sorensen Ristinmaa et al.

Summary: Tannases from the anaerobic bacterium Clostridium butyricum were biochemically and structurally characterized, showing unique substrate preferences and potential roles in valorization of renewable plant biomass.

JOURNAL OF BIOLOGICAL CHEMISTRY (2022)

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Article Environmental Sciences

NahAa can convert naphthalene and reduce chromate simultaneously and immobilized on functional multiwall carbon nanotubes for wastewater treatment

Shuai Zhao et al.

Summary: This study showed that the naphthalene degradation enzyme NahAa from P. brassicacearum LZ-4 can reduce Cr(VI). The enzyme was immobilized on multi walled carbon nanotubes to form a stable and efficient composite MWCNT-NahAa, which exhibited a higher Cr(VI) reduction efficiency in wastewater treatment.

CHEMOSPHERE (2022)

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Article Chemistry, Medicinal

Biocatalytic asymmetric synthesis of secondary allylic alcohols using Burkholderia cepacia lipase immobilized on multiwalled carbon nanotubes

Michele do Rocio Goncalves Dias et al.

Summary: In this study, the lipase was immobilized on multiwalled carbon nanotubes with carboxyl or amine groups and used for the stereoselective acylation of two alcohols. The immobilized lipase showed improved catalytic activity and selectivity compared to the free enzyme.

CHIRALITY (2022)

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Article Mycology

Pestalotiopsis mangiferae isolated from cocoa leaves and concomitant tannase and gallic acid production

Camilla Savicius de Lima et al.

Summary: The enzyme tannase is of great industrial and biotechnological importance for hydrolysis of vegetable tannins. In this study, a strain of P. mangiferae isolated from cocoa leaves was found to produce tannase and gallic acid. Response Surface Methodology was used to optimize the production conditions, resulting in a significant increase in tannase activity. The optimized conditions included specific carbon and nitrogen sources and a temperature of 23 degrees C. The results demonstrate the potential of P. mangiferae for tannase and gallic acid production for biotechnological applications.

FUNGAL BIOLOGY (2022)

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Article Chemistry, Multidisciplinary

Immobilization of Trypsin from the Subphase to the Langmuir Monolayer of Fluorocarbon-Modified Single-Walled Carbon Nanotube and Its Activity Maintenance

Yuna Yamada et al.

Summary: Single-walled carbon nanotubes modified with a fluorocarbon chain can adsorb trypsin and maintain its activity, including the ability to cleave a fluorescent casein chain at 160 degrees C. The secondary structure activity of trypsin adsorbed on the fluorocarbon-modified SWCNT can also be maintained up to nearly 200 degrees C.

LANGMUIR (2022)

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Article Chemistry, Applied

Immobilization of Rhizomucor miehei lipase on magnetic multiwalled carbon nanotubes towards the synthesis of structured lipids rich in sn-2 palmitic acid and sn-1,3 oleic acid (OPO) for infant formula use

Michael Kidane Ghide et al.

Summary: This study synthesized OPO-rich human milk fat substitutes using immobilized lipase on magnetic multi-walled carbon nanotubes, showing excellent catalytic activity and reusability. The results suggest that this technology has the potential to efficiently synthesize OPO-rich TAGs for infant formulas.

FOOD CHEMISTRY (2022)

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Article Chemistry, Physical

Immobilized L-ribose isomerase for the sustained synthesis of a rare sugar D-talose

Aishwarya Singh et al.

Summary: The biocatalytic activity of immobilized enzymes heavily relies on the matrix, enzyme properties, and immobilization process. Carbon nanomaterials like graphene oxide and multiwalled carbon nanotubes show potential for efficient enzyme immobilization via covalent conjugation and physical adsorption. The study focused on immobilizing L-ribose isomerase on these materials and optimizing conditions for enzyme kinetics, reusability, and catalytic efficiency.

MOLECULAR CATALYSIS (2021)

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Article Chemistry, Physical