This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/bab.1569. This article is protected by copyright. All rights reserved. Improved enzymatic performance of graphene immobilized - glucosidase A in the presence of glucose-6-phosphate. Anderson Albino Gomes a,b , Elisa Pazinatto Telli a , Luiz Claudio Miletti a , Everton Skoronski b , Marcos Gomes Ghislandi d , Gustavo Felippe da Silva c and Maria de Lourdes Borba Magalhães a *. a Department of Food and Animal Science, Center of Agroveterinary Sciences, State University of Santa Catarina; 2090 Luiz de Camões, Lages, Santa Catarina, Brazil. b Department of Environmental Engineering, Center of Agroveterinary Sciences, State University of Santa Catarina; 2090 Luiz de Camões, Lages, Santa Catarina, Brazil. c Department of Forest Engineering, Center of Agroveterinary Sciences, State University of Santa Catarina; 2090 Luiz de Camões, Lages, Santa Catarina, Brazil. d Department of Materials Engineering, Academic Unit at Cabo de Santo Agostinho, Rural Federal University of Pernambuco, 5225 BR 101 South, Cabo de Santo Agostinho, Pernambuco, Brazil. Running title: BGLA-graphene nanoparticle immobilization. *To whom correspondence must be addressed: Maria de Lourdes Borba Magalhães; State University of Santa Catarina; 2090, Luiz de Camões, Lages, SC, Brazil; email: maria.magalhaes@udesc.br; phone number: 55 49 32899221