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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
05/12/2023 |
Data da última atualização: |
05/12/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SPACKI, K. de C.; NOVI, D. M. P.; DURIGON, D. C.; FRAGA, F. C.; SANTOS, L. F. O.; HELM, C. V.; LIMA, E. A. de; PERALTA, R. A.; MOREIRA, R. de F. P. M.; CORRÊA, R. C. G.; BRACHT, A.; PERALTA, R. M. |
Afiliação: |
KAMILA DE CASSIA SPACKI, UNIVERSIDADE ESTADUAL DE MARINGÁ; DANIELLY MARIA PAIXÃO NOVI, UNIVERSIDADE ESTADUAL DE MARINGÁ; DANIELE COCCO DURIGON, UNIVERSIDADE FEDERAL DE SANTA CATARINA; FERNANDA CRISTINA FRAGA, UNIVERSIDADE FEDERAL DE SANTA CATARINA; LUIS FELIPE OLIVA SANTOS, UNIVERSIDADE ESTADUAL DE MARINGÁ; CRISTIANE VIEIRA HELM, CNPF; EDSON ALVES DE LIMA, CNPF; ROSELY APARECIDA PERALTA, UNIVERSIDADE FEDERAL DE SANTA CATARINA; REGINA DE FATIMA PERALTA MUNIZ MOREIRA, UNIVERSIDADE FEDERAL DE SANTA CATARINA; RUBIA CARVALHO GOMES CORRÊA, CENTRO UNIVERSITÁRIO DE MARINGÁ; ADELAR BRACHT, UNIVERSIDADE ESTADUAL DE MARINGÁ; ROSANE MARINA PERALTA, UNIVERSIDADE ESTADUAL DE MARINGÁ. |
Título: |
Improving enzymatic saccharification of peach palm (Bactris gasipaes) waste by biological pretreatment with Pleurotus ostreatus. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
In: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS E NUTRIÇÃO, 15., 2023, Campinas. Caderno de resumos [...]. Campinas: Galoá Science, 2023. |
Páginas: |
p. 109-110. |
ISBN: |
978-65-89463-70-2 |
Idioma: |
Português |
Notas: |
SLACAN 2023. |
Conteúdo: |
Popularly known as pupunha, Bactris gasipaes Kunth is a palm tree native to the Amazon region whose planting has extended to the Southern and Southeastern states of Brazil. The production and consumption of peach palm generate a huge volume of by-products. It is estimated that approximately 84% of the total weight of the palm are lignocellulosic wastes. The white-rot fungus Pleurotus ostreatus was used for biological pretreatment of peach palm lignocellulosic wastes (inner sheath and peel) for improving the enzymatic saccharification and production of glucose. Non-treated and pre-treated B. gasipaes inner sheath and peel were submitted to hydrolysis by a commercial cellulase preparation from T. reesei. The amounts of total reducing sugars and glucose obtained from the 30d-pretreated inner sheath were seven and five times superior, respectively, when compared to those obtained with the non-pretreated inner sheath. However, the pre-treatment did not cause any improvement in the saccharification of the B. gasipaes peel. Scanning electronic microscopy of lignocellulosic fibers was done to verify the structural changes caused by the biological pretreatments. Upon the biological pretreatment the lignocellulosic structures of the inner sheath were substantially modified to less ordered ones. The main features of the modifications were detachment of the fibers, cell wall collapse and, in several cases, formation of pores in the cell wall surfaces. The peel lignocellulosic fibers showed more ordered fibrils and no modification was observed after pre-treatment. In conclusion, P. ostreatus pretreatment considerably improved saccharification of the B. gasipaes inner sheath (7-fold), but ´pretreatment of the peel was largely ineffective. MenosPopularly known as pupunha, Bactris gasipaes Kunth is a palm tree native to the Amazon region whose planting has extended to the Southern and Southeastern states of Brazil. The production and consumption of peach palm generate a huge volume of by-products. It is estimated that approximately 84% of the total weight of the palm are lignocellulosic wastes. The white-rot fungus Pleurotus ostreatus was used for biological pretreatment of peach palm lignocellulosic wastes (inner sheath and peel) for improving the enzymatic saccharification and production of glucose. Non-treated and pre-treated B. gasipaes inner sheath and peel were submitted to hydrolysis by a commercial cellulase preparation from T. reesei. The amounts of total reducing sugars and glucose obtained from the 30d-pretreated inner sheath were seven and five times superior, respectively, when compared to those obtained with the non-pretreated inner sheath. However, the pre-treatment did not cause any improvement in the saccharification of the B. gasipaes peel. Scanning electronic microscopy of lignocellulosic fibers was done to verify the structural changes caused by the biological pretreatments. Upon the biological pretreatment the lignocellulosic structures of the inner sheath were substantially modified to less ordered ones. The main features of the modifications were detachment of the fibers, cell wall collapse and, in several cases, formation of pores in the cell wall surfaces. The peel lignocellulosic fibers sho... Mostrar Tudo |
Palavras-Chave: |
Bioeconomia circular; Circular bioeconomy; Enzimatic saccharification; Resíduos; Scarificação enzimática. |
Thesagro: |
Bactris Gasipaes; Subproduto. |
Thesaurus Nal: |
Pleurotus ostreatus. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02977nam a2200373 a 4500 001 2159150 005 2023-12-05 008 2023 bl uuuu u00u1 u #d 020 $a978-65-89463-70-2 100 1 $aSPACKI, K. de C. 245 $aImproving enzymatic saccharification of peach palm (Bactris gasipaes) waste by biological pretreatment with Pleurotus ostreatus.$h[electronic resource] 260 $aIn: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS E NUTRIÇÃO, 15., 2023, Campinas. Caderno de resumos [...]. Campinas: Galoá Science$c2023 300 $ap. 109-110. 500 $aSLACAN 2023. 520 $aPopularly known as pupunha, Bactris gasipaes Kunth is a palm tree native to the Amazon region whose planting has extended to the Southern and Southeastern states of Brazil. The production and consumption of peach palm generate a huge volume of by-products. It is estimated that approximately 84% of the total weight of the palm are lignocellulosic wastes. The white-rot fungus Pleurotus ostreatus was used for biological pretreatment of peach palm lignocellulosic wastes (inner sheath and peel) for improving the enzymatic saccharification and production of glucose. Non-treated and pre-treated B. gasipaes inner sheath and peel were submitted to hydrolysis by a commercial cellulase preparation from T. reesei. The amounts of total reducing sugars and glucose obtained from the 30d-pretreated inner sheath were seven and five times superior, respectively, when compared to those obtained with the non-pretreated inner sheath. However, the pre-treatment did not cause any improvement in the saccharification of the B. gasipaes peel. Scanning electronic microscopy of lignocellulosic fibers was done to verify the structural changes caused by the biological pretreatments. Upon the biological pretreatment the lignocellulosic structures of the inner sheath were substantially modified to less ordered ones. The main features of the modifications were detachment of the fibers, cell wall collapse and, in several cases, formation of pores in the cell wall surfaces. The peel lignocellulosic fibers showed more ordered fibrils and no modification was observed after pre-treatment. In conclusion, P. ostreatus pretreatment considerably improved saccharification of the B. gasipaes inner sheath (7-fold), but ´pretreatment of the peel was largely ineffective. 650 $aPleurotus ostreatus 650 $aBactris Gasipaes 650 $aSubproduto 653 $aBioeconomia circular 653 $aCircular bioeconomy 653 $aEnzimatic saccharification 653 $aResíduos 653 $aScarificação enzimática 700 1 $aNOVI, D. M. P. 700 1 $aDURIGON, D. C. 700 1 $aFRAGA, F. C. 700 1 $aSANTOS, L. F. O. 700 1 $aHELM, C. V. 700 1 $aLIMA, E. A. de 700 1 $aPERALTA, R. A. 700 1 $aMOREIRA, R. de F. P. M. 700 1 $aCORRÊA, R. C. G. 700 1 $aBRACHT, A. 700 1 $aPERALTA, R. M.
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Embrapa Florestas (CNPF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
09/11/2018 |
Data da última atualização: |
26/07/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
MALUCELLI, L. C.; MATOS, M. de; JORDÃO, C.; LACERDA, L. G.; CARVALHO FILHO, M. A. S.; MAGALHAES, W. L. E. |
Afiliação: |
LUCCA C. Malucelli, Graduate Program in Environmental Management, Universidade Positivo; Mailson de Matos, Graduate Program in Materials and Science Engineering (PIPE), UFPR; Caroline Jordão, Graduate Program in Materials and Science Engineering (PIPE), UFPR; L. G. Lacerda, Graduate Program in Food Engineering, UEPG; M. A. S. Carvalho Filho, Graduate Program in Environmental Management, Universidade Positivo; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
Título: |
Grinding severity influences the viscosity of cellulose nanofiber (CNF) suspensions and mechanical properties of nanopaper. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Cellulose, v. 25, n. 11, p. 6581-6589, Nov. 2018. |
DOI: |
10.1007/s10570-018-2031-9 |
Idioma: |
Inglês |
Conteúdo: |
The extent of influence of ultrafine grinding on thermal, structural and rheological properties of cellulose nanofibers and mechanical properties of nanopaper was studied. Bleached Eucalyptus Pulp was used as a raw material for nanocellulose preparation where samples were collected every 5 passages (5, 10, 15, 20 and 25 passages) for analysis. TGA curves suggest thermal stability is decreased after 15 passages as surface area increased in homogenized samples. Moreover, intense defibrillation anticipated thermal degradation and gradually reduced cellulose degradation enthalpy in samples, as evidenced by TGA and DSC curves, thus suggesting fibers size reduction. The XRD crystallinity index does not vary with increased grinding. Finally, suspensions viscosity and nanopaper density showed strong influence over the mechanical properties of nanopapers as evidenced by DMA characterization. Increase in defibrillation resulted in fibers with enhanced tensile strain, toughness, and elastic modulus. However, fiber over-grinding affected this improvement, probably reducing electrostatic repulsion between fibers and resulting in less dense nanopapers. |
Palavras-Chave: |
Defibrillation; Dynamic mechanical analysis; Microfibrilação; Microfibrillation; Nanocellulose; Nanocelulose. |
Thesagro: |
Viscosidade. |
Thesaurus NAL: |
Viscosity. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02046naa a2200289 a 4500 001 2099071 005 2019-07-26 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1007/s10570-018-2031-9$2DOI 100 1 $aMALUCELLI, L. C. 245 $aGrinding severity influences the viscosity of cellulose nanofiber (CNF) suspensions and mechanical properties of nanopaper.$h[electronic resource] 260 $c2018 520 $aThe extent of influence of ultrafine grinding on thermal, structural and rheological properties of cellulose nanofibers and mechanical properties of nanopaper was studied. Bleached Eucalyptus Pulp was used as a raw material for nanocellulose preparation where samples were collected every 5 passages (5, 10, 15, 20 and 25 passages) for analysis. TGA curves suggest thermal stability is decreased after 15 passages as surface area increased in homogenized samples. Moreover, intense defibrillation anticipated thermal degradation and gradually reduced cellulose degradation enthalpy in samples, as evidenced by TGA and DSC curves, thus suggesting fibers size reduction. The XRD crystallinity index does not vary with increased grinding. Finally, suspensions viscosity and nanopaper density showed strong influence over the mechanical properties of nanopapers as evidenced by DMA characterization. Increase in defibrillation resulted in fibers with enhanced tensile strain, toughness, and elastic modulus. However, fiber over-grinding affected this improvement, probably reducing electrostatic repulsion between fibers and resulting in less dense nanopapers. 650 $aViscosity 650 $aViscosidade 653 $aDefibrillation 653 $aDynamic mechanical analysis 653 $aMicrofibrilação 653 $aMicrofibrillation 653 $aNanocellulose 653 $aNanocelulose 700 1 $aMATOS, M. de 700 1 $aJORDÃO, C. 700 1 $aLACERDA, L. G. 700 1 $aCARVALHO FILHO, M. A. S. 700 1 $aMAGALHAES, W. L. E. 773 $tCellulose$gv. 25, n. 11, p. 6581-6589, Nov. 2018.
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