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A Sustainable Approach of Enzymatic Grafting on Eucalyptus globulus Wood by Laccase from the Newly Isolated White-Rot Basidiomycete Marasmiellus palmivorus VE111
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-07-01 00:00:00 , DOI: 10.1021/acssuschemeng.9b02770 Willian Daniel Hahn Schneider 1 , Cristian Bolaño Losada 2 , Diego Moldes 2 , Roselei Claudete Fontana 1 , Félix Gonçalves de Siqueira 3 , Alicia Prieto 4 , María Jesús Martínez 4 , Ángel T. Martínez 4 , Aldo José Pinheiro Dillon 1 , Marli Camassola 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-07-01 00:00:00 , DOI: 10.1021/acssuschemeng.9b02770 Willian Daniel Hahn Schneider 1 , Cristian Bolaño Losada 2 , Diego Moldes 2 , Roselei Claudete Fontana 1 , Félix Gonçalves de Siqueira 3 , Alicia Prieto 4 , María Jesús Martínez 4 , Ángel T. Martínez 4 , Aldo José Pinheiro Dillon 1 , Marli Camassola 1
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Enzymatic grafting on eucalyptus wood with laccase from the basidiomycete Marasmiellus palmivorus VE111, recently isolated in Southern Brazil, was investigated. Three phenol and amine hydrophobic substrates and two mediator compounds were used to verify the potential of the enzyme for oxidative grafting. Laccase-assisted grafting of octyl and lauryl gallate was effectively achieved, presenting better results with mediator addition. In the water contact angle tests, the water drop kept 60% and 37% of its initial angle, with octyl gallate and lauryl gallate, respectively. Consequently, the enzymatic grafting of these compounds allowed an increase in the hydrophobicity of eucalyptus veneers (up to 10% and 5%, respectively), which is an interesting feature for the building and furniture industry to improve the durability and dimensional stability of wood. The results obtained in this work demonstrate the possibility of an environmentally friendly pathway to help solve a major challenge in wooden construction. In addition, the promising results of this work potentiate the use of a novel laccase, manufactured on-site, to be applied in sustainable processes in wood and furniture industries and other applications where hydrophobization of materials is desirable.
中文翻译：
从新分离的白腐烂担子菌Marasmiellus palmivorus VE111的漆酶对球形桉木进行酶接枝的可持续方法
产自巴西担子菌Marasmiellus palmivorus的漆酶的酶接枝在桉木上最近在巴西南部隔离的VE111进行了调查。使用三种酚和胺疏水性底物和两种介体化合物来验证该酶用于氧化接枝的潜力。有效地完成了漆酶辅助的辛酸和月桂基没食子酸酯的接枝，添加了介体后表现出更好的效果。在水接触角测试中，水滴分别与没食子酸辛酯和没食子酸月桂酯保持初始角度的60％和37％。因此，这些化合物的酶接枝增加了桉木贴面的疏水性（分别高达10％和5％），这对于建筑和家具行业来说是一个有趣的功能，可以提高木材的耐久性和尺寸稳定性。在这项工作中获得的结果证明了一条环保途径的可能性，以帮助解决木制结构中的一项重大挑战。另外，这项工作的有希望的结果有力地促进了在现场生产的新型漆酶的应用，该漆酶可用于木材和家具行业的可持续工艺以及需要疏水化材料的其他应用。
更新日期：2019-07-01
中文翻译：
从新分离的白腐烂担子菌Marasmiellus palmivorus VE111的漆酶对球形桉木进行酶接枝的可持续方法
产自巴西担子菌Marasmiellus palmivorus的漆酶的酶接枝在桉木上最近在巴西南部隔离的VE111进行了调查。使用三种酚和胺疏水性底物和两种介体化合物来验证该酶用于氧化接枝的潜力。有效地完成了漆酶辅助的辛酸和月桂基没食子酸酯的接枝，添加了介体后表现出更好的效果。在水接触角测试中，水滴分别与没食子酸辛酯和没食子酸月桂酯保持初始角度的60％和37％。因此，这些化合物的酶接枝增加了桉木贴面的疏水性（分别高达10％和5％），这对于建筑和家具行业来说是一个有趣的功能，可以提高木材的耐久性和尺寸稳定性。在这项工作中获得的结果证明了一条环保途径的可能性，以帮助解决木制结构中的一项重大挑战。另外，这项工作的有希望的结果有力地促进了在现场生产的新型漆酶的应用，该漆酶可用于木材和家具行业的可持续工艺以及需要疏水化材料的其他应用。
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