Ethanol from rice byproduct using amylases secreted by Rhizopus microsporus var. oligosporus. Enzyme partial purification and characterization

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniv Estadual Piaui-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorBarros Ranke, Fabiane Fernanda de [UNESP]-
Autor(es): dc.creatorShinya, Thais Yumi-
Autor(es): dc.creatorFigueiredo, Franciane Cristina de [UNESP]-
Autor(es): dc.creatorFernandez Nunez, Eutimio Gustavo-
Autor(es): dc.creatorCabral, Hamilton-
Autor(es): dc.creatorNeto, Pedro de Oliva [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:05:36Z-
Data de disponibilização: dc.date.available2022-02-22T00:05:36Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-07-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jenvman.2020.110591-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/195359-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/195359-
Descrição: dc.descriptionA three-stage bioethanol bioprocess was developed. Firstly, amylases were obtained from Rhizopus microsporus var. oligosporus using wheat bran in solid-state fermentation. Secondly, amylases hydrolyzed a rice byproduct to make a glucose-rich solution, and this sugar was finally metabolized by Saccharomyces cerevisiae to produce bioethanol. Besides, the secreted enzymes were also partially purified and characterized. The amylase activity (AA) in the crude extract was 358 U/g substrate, and the partially purified enzyme showed the best activity in the 4.0-5.5 pH range. A wide pH stability range (3.5-8.5) was confirmed. The amylase was thermostable up to 60 degrees C. The ion Mn+2 (10 mM) improved by 60% the AA. There was a 54.9% yield in the conversion of rice residues into reducing sugars in 10 h. The glucose-rich solution was undergone fermentation by S. cerevisiae and showed high ethanol efficiency, 95.8% of the theoretical value. These results suggested a promising technology for bioethanol production.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Pesquisa Bioenergia IPBEN, Dept Biotecnol, Lab Biotecnol Ind, Campus Assis,Ave Dom Antonio 2100, Assis 19806900, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Piaui, Campus Herois Jenipapo, Campo Major, PI, Brazil-
Descrição: dc.descriptionUniv Sao Paulo, Escola Artes Ciencias & Humanidades EACH, Rua Arlindo Bettio 1000, Sao Paulo 03828000, SP, Brazil-
Descrição: dc.descriptionUniv Sao Paulo, Fac Ciencias Farmaceut Ribeira Preto, Lab Tecnol Enzimat, Ave Cafe S-N, Ribeirao Preto 14040903, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Pesquisa Bioenergia IPBEN, Dept Biotecnol, Lab Biotecnol Ind, Campus Assis,Ave Dom Antonio 2100, Assis 19806900, SP, Brazil-
Descrição: dc.descriptionCNPq: 134523/2013-0-
Descrição: dc.descriptionFAPESP: 2014/24188-1-
Formato: dc.format10-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationJournal Of Environmental Management-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectAmylase-
Palavras-chave: dc.subjectSolid-state fermentation-
Palavras-chave: dc.subjectRhizopus microsporus var. oligosporus-
Palavras-chave: dc.subjectGlucose syrup-
Palavras-chave: dc.subjectBioethanol-
Título: dc.titleEthanol from rice byproduct using amylases secreted by Rhizopus microsporus var. oligosporus. Enzyme partial purification and characterization-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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