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Polymers 2018, 10(10), 1141;

Polymers from Bamboo Extracts Produced by Laccase

International Joint Research Laboratory for Textile and Fiber Bioprocesses, Jiangnan University, Wuxi 214122, China
Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Jiangsu Sunshine Group Co., Ltd, Jiangyin 214426, China
These authors contributed equally to this work.
Authors to whom correspondence should be addressed.
Received: 13 September 2018 / Revised: 27 September 2018 / Accepted: 9 October 2018 / Published: 12 October 2018
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A green methodology for the production of polymers from bamboo powder was investigated. The optimal conditions for the extraction of components from bamboo were defined by incubating the powder in an acetate buffer (pH 5) under boiling for 2 h. Native laccase from Myceliophthora thermophila was used afterwards to oxidize the extracts from the final resulting extraction liquid. The reduction of the free OH content after enzymatic oxidation, as well as the 1H NMR data, confirmed the efficient polymerization of the extracts. The bamboo powder samples were also subjected to high compression and curing, in the absence and in the presence of laccase, to evaluate the hardness of the tablets formed by enzymatic bonding events. The results revealed a higher hardness when the tablets were produced in the presence of laccase, confirming the role of the catalyst on the precipitation of colloidal lignin and phenolic extractives. Herein we produce new oligomers/polymers by laccase oxidation of the extracts resulting from a clean method boiling. At the same time, the data open up new routes for the exploitation of new lignocellulosic materials by the direct application of the enzyme on the bamboo powder material. View Full-Text
Keywords: bamboo powder; phenolic compound extraction; laccase; oxidation; bamboo tablets bamboo powder; phenolic compound extraction; laccase; oxidation; bamboo tablets

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Su, J.; Wang, C.; Noro, J.; Cavaco-Paulo, A.; Silva, C.; Fu, J. Polymers from Bamboo Extracts Produced by Laccase. Polymers 2018, 10, 1141.

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