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2 results on '"Laccase oxidation of cellulose"'

1. Turning biomass into functional composite materials: Rice husk for fully renewable immobilized biocatalysts

Author

Mariachiara Spennato, Anamaria Todea, Livia Corici, Fioretta Asaro, Nicola Cefarin, Gilda Savonitto, Caterina Deganutti, and Lucia Gardossi

Subjects
Biocatalysis for bioeconomy, Covalent immobilization of lipases, Rice husk, Renewable immobilization carriers, Laccase oxidation of cellulose, Economic growth, development, planning, HD72-88, Environmental protection, TD169-171.8, Technology
Abstract

Rice husk is an underexploited, low density and highly robust composite material, massively available from rice processing. Here we report two new procedures for the formulation of immobilized lipases applicable in fats and oils transformations. The enzymes were covalently anchored on aldehyde groups introduced on rice husk by laccase-catalysed oxidation of the cellulose component. The method avoids the use of toxic glutaraldehyde while allows for the application and recycling of the biocatalysts in aqueous media. The second method used a fluidized bed granulator for the coating of the particles of rice husk (200–400 μm) in the presence of water-soluble binders. The formulations are mechanically stable and suitable for applications in different hydrophobic media. Both methods allow for the recovery and reuse of the rice husk at the end of the life cycle of the biocatalysts.

Published
2021
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2. Turning biomass into functional composite materials: Rice husk for fully renewable immobilized biocatalysts

Author

Nicola Cefarin, Gilda Savonitto, Anamaria Todea, Mariachiara Spennato, Lucia Gardossi, Fioretta Asaro, Livia Corici, Caterina Deganutti, Spennato, Mariachiara, Todea, Anamaria, Corici, Livia, Asaro, Fioretta, Cefarin, Nicola, Savonitto, Gilda, Deganutti, Caterina, and Gardossi, Lucia

Subjects
Technology, Biomass, Economic growth, development, planning, Laccases, Reuse, engineering.material, Environmental protection, Husk, Laccase oxidation of cellulose, Biocatalysis, bioeconomy, Covalentimmobilization, lipases, Rice husk, chemistry.chemical_compound, Coating, TD169-171.8, lipase, Cellulose, Laccase, Renewable immobilization carriers, food and beverages, Biocatalysi, Covalent immobilization of lipases, Biocatalysis for bioeconomy, chemistry, Chemical engineering, Fluidized bed, HD72-88, engineering, Glutaraldehyde
Abstract

Rice husk is an underexploited, low density and highly robust composite material, massively available from rice processing. Here we report two new procedures for the formulation of immobilized lipases applicable in fats and oils transformations. The enzymes were covalently anchored on aldehyde groups introduced on rice husk by laccase-catalysed oxidation of the cellulose component. The method avoids the use of toxic glutaraldehyde while allows for the application and recycling of the biocatalysts in aqueous media. The second method used a fluidized bed granulator for the coating of the particles of rice husk (200–400 μm) in the presence of water-soluble binders. The formulations are mechanically stable and suitable for applications in different hydrophobic media. Both methods allow for the recovery and reuse of the rice husk at the end of the life cycle of the biocatalysts.

Published
2021

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