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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
21/01/2015 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BASSO, V.; MACHADO, J. C.; LEDO, F. J. da S.; CARNEIRO, J. da C.; FONTANA, R. C.; DILLON, A. J. P.; CAMASSOLA, M. |
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Afiliação: |
VANESSA BASSO, Universidade de Caxias do Sul; JUAREZ CAMPOLINA MACHADO, CNPGL; FRANCISCO JOSE DA SILVA LEDO, CNPGL; JAILTON DA COSTA CARNEIRO, CNPGL; ROSELEI CLAUDETE FONTANA, Universidade de Caxias do Sul; ALDO J. P. DILLON, Universidade de Caxias do Sul; MARLI CAMASSOLA, Universidade de Caxias do Sul. |
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Título: |
Different elephant grass (Pennisetum purpureum) accessions as substrates for enzyme production for the hydrolysis of lignocellulosic materials. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Biomass and bioenergy, n. 71, p. 155-161, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Pennisetum purpureum (elephant grass) is a tropical species presenting C4 metabolism and high productivity, yielding approximately 45 t of dry matter/ha/year. Such productivity makes elephant grass an interesting biomass source to produce second-generation ethanol. However, the high cost of enzymes for enzymatic hydrolysis is one bottleneck on the way to making the production of this biofuel economically viable. The production of cellulases and xylanases by Penicillium echinulatum 9A02S1 was evaluated using 85 different non-treated elephant grass accessions in submerged culture, aiming to identify genotypes with potential biomass for the production of enzymes for the secondgeneration ethanol industry. The data clearly indicate that it is possible to replace cellulose with elephant grass biomass for the production of cellulases, b-glucosidases and xylanases. The accession IJ 7127 produced 4.7 times more than cellulose for endoglucanases and 4 times for Filter Paper Activity. Ten accessions (BAGCE 69, Napierzinho, IJ 7125, IJ 7126, IJ 7127, IJ 7136, IJ 7141, CAC-262, Ibitinema, 13 AD) produced at least 4 times more b-glucosidases than cellulose, and for xylanases, three accessions (Mercker 86 Mexico, Taiwan A-144, Napier S.E.A.) produ ced twice as much as the control. The data also indicate that there is no direct relationship between the amount of lignin and cellulose in the substrate, but the mineral salts present in the sample significantly influenced the enzyme production. |
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Palavras-Chave: |
Napier grass; Production. |
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Thesaurus Nal: |
cellulases; lignin; xylanases. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02258naa a2200253 a 4500
001 2006227
005 2024-02-05
008 2014 bl uuuu u00u1 u #d
100 1 $aBASSO, V.
245 $aDifferent elephant grass (Pennisetum purpureum) accessions as substrates for enzyme production for the hydrolysis of lignocellulosic materials.$h[electronic resource]
260 $c2014
520 $aPennisetum purpureum (elephant grass) is a tropical species presenting C4 metabolism and high productivity, yielding approximately 45 t of dry matter/ha/year. Such productivity makes elephant grass an interesting biomass source to produce second-generation ethanol. However, the high cost of enzymes for enzymatic hydrolysis is one bottleneck on the way to making the production of this biofuel economically viable. The production of cellulases and xylanases by Penicillium echinulatum 9A02S1 was evaluated using 85 different non-treated elephant grass accessions in submerged culture, aiming to identify genotypes with potential biomass for the production of enzymes for the secondgeneration ethanol industry. The data clearly indicate that it is possible to replace cellulose with elephant grass biomass for the production of cellulases, b-glucosidases and xylanases. The accession IJ 7127 produced 4.7 times more than cellulose for endoglucanases and 4 times for Filter Paper Activity. Ten accessions (BAGCE 69, Napierzinho, IJ 7125, IJ 7126, IJ 7127, IJ 7136, IJ 7141, CAC-262, Ibitinema, 13 AD) produced at least 4 times more b-glucosidases than cellulose, and for xylanases, three accessions (Mercker 86 Mexico, Taiwan A-144, Napier S.E.A.) produ ced twice as much as the control. The data also indicate that there is no direct relationship between the amount of lignin and cellulose in the substrate, but the mineral salts present in the sample significantly influenced the enzyme production.
650 $acellulases
650 $alignin
650 $axylanases
653 $aNapier grass
653 $aProduction
700 1 $aMACHADO, J. C.
700 1 $aLEDO, F. J. da S.
700 1 $aCARNEIRO, J. da C.
700 1 $aFONTANA, R. C.
700 1 $aDILLON, A. J. P.
700 1 $aCAMASSOLA, M.
773 $tBiomass and bioenergy$gn. 71, p. 155-161, 2014.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
26/06/2013 |
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Data da última atualização: |
07/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
MALHI, Y.; WOOD, D.; BAKER, T. R.; WRIGHT, J.; PHILLIPS, O. L.; COCHRANE, T.; MEIR, P.; CHAVE, J.; ALMEIDA, S.; ARROYO, L.; HIGUCHI, N.; KILLEEN, T. J.; LAURANCE, S. G.; LEWIS, S. L.; MONTEAGUDO, A.; NEILL, D. A.; VARGAS, P. N.; PITMAN, N. C. A.; QUESADA, C. A.; SALOMÃO, R.; SILVA, J. N. M.; LEZAMA, A. T.; TERBORGH, J.; MARTÍNEZ, R. V.; VINCETI, B. |
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Afiliação: |
YADVINDER MALHI, Oxford University Centre for the Environment/ University of Edinburgh; DANIEL WOOD, University of Edinburgh; TIMOTHY R. BAKER, University of Leeds; JAMES WRIGHT, University of Southampton; OLIVER L. PHILLIPS, University of Leeds; THOMAS COCHRANE, Agteca; PATRICK MEIR, University of Edinburgh; JEROME CHAVE, Laboratoire Evolution et Diversité Biologique, CNRS/UPS; SAMUEL ALMEIDA, MPEG; LUZMILLA ARROYO, Museo Noel Kempff Mercado; NIRO HIGUCHI, INPA; TIMOTHY J. KILLEEN, Center for Applied Biodiversity Science, Conservation International; SUSAN G. LAURANCE, Smithsonian Tropical Research Institute; SIMON L. LEWIS, University of Leeds; ABEL MONTEAGUDO, Universidad Nacional San Antonio Abad del Cusco / Jardin Botanico de Missouri; DAVID A. NEILL, Fundacion Jatun Sacha; PERCY NÚÑEZ VARGAS, Universidad Nacional San Antonio Abad del Cusco; NIGEL C. A. PITMAN, Duke University; CARLOS ALBERTO QUESADA, University of Leeds; RAFAEL SALOMÃO, MPEG; JOSÉ NATALINO MACEDO SILVA, CIFOR / CPATU; ARMANDO TORRES LEZAMA, INDEFOR; JOHN TERBORGH, Duke University; RODOLFO VÁSQUEZ MARTÍNEZ, Jardin Botanico de Missouri; BARBARA VINCETI, International Plant Genetic Resources Institute. |
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Título: |
The regional variation of aboveground live biomass in old-growth Amazonian forests. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Global Change Biology, v. 12, n. 7, p. 1107-1138, July 2006. |
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DOI: |
10.1111/j.1365-2486.2006.01120.x |
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Idioma: |
Inglês |
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Conteúdo: |
The biomass of tropical forests plays an important role in the global carbon cycle, both as a dynamic reservoir of carbon, and as a source of carbon dioxide to the atmosphere in areas undergoing deforestation. However, the absolute magnitude and environmental determinants of tropical forest biomass are still poorly understood. Here, we present a new synthesis and interpolation of the basal area and aboveground live biomass of old-growth lowland tropical forests across South America, based on data from 227 forest plots, many previously unpublished. Forest biomass was analyzed in terms of two uncorrelated factors: basal area and mean wood density. Basal area is strongly affected by local landscape factors, but is relatively invariant at regional scale in moist tropical forests, and declines significantly at the dry periphery of the forest zone. Mean wood density is inversely correlated with forest dynamics, being lower in the dynamic forests of western Amazonia and high in the slow-growing forests of eastern Amazonia. The combination of these two factors results in biomass being highest in the moderately seasonal, slow growing forests of central Amazonia and the Guyanas (up to 350 Mg dry weight ha−1) and declining to 200?250 Mg dry weight ha−1 at the western, southern and eastern margins. Overall, we estimate the total aboveground live biomass of intact Amazonian rainforests (area 5.76 × 106 km2 in 2000) to be 93±23 Pg C, taking into account lianas and small trees. Including dead biomass and belowground biomass would increase this value by approximately 10% and 21%, respectively, but the spatial variation of these additional terms still needs to be quantified. MenosThe biomass of tropical forests plays an important role in the global carbon cycle, both as a dynamic reservoir of carbon, and as a source of carbon dioxide to the atmosphere in areas undergoing deforestation. However, the absolute magnitude and environmental determinants of tropical forest biomass are still poorly understood. Here, we present a new synthesis and interpolation of the basal area and aboveground live biomass of old-growth lowland tropical forests across South America, based on data from 227 forest plots, many previously unpublished. Forest biomass was analyzed in terms of two uncorrelated factors: basal area and mean wood density. Basal area is strongly affected by local landscape factors, but is relatively invariant at regional scale in moist tropical forests, and declines significantly at the dry periphery of the forest zone. Mean wood density is inversely correlated with forest dynamics, being lower in the dynamic forests of western Amazonia and high in the slow-growing forests of eastern Amazonia. The combination of these two factors results in biomass being highest in the moderately seasonal, slow growing forests of central Amazonia and the Guyanas (up to 350 Mg dry weight ha−1) and declining to 200?250 Mg dry weight ha−1 at the western, southern and eastern margins. Overall, we estimate the total aboveground live biomass of intact Amazonian rainforests (area 5.76 × 106 km2 in 2000) to be 93±23 Pg C, taking into account lianas and small trees.... Mostrar Tudo |
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Thesagro: |
Biomassa; Carbono; Fertilidade do Solo. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02953naa a2200469 a 4500
001 1960662
005 2022-11-07
008 2006 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1365-2486.2006.01120.x$2DOI
100 1 $aMALHI, Y.
245 $aThe regional variation of aboveground live biomass in old-growth Amazonian forests.$h[electronic resource]
260 $c2006
520 $aThe biomass of tropical forests plays an important role in the global carbon cycle, both as a dynamic reservoir of carbon, and as a source of carbon dioxide to the atmosphere in areas undergoing deforestation. However, the absolute magnitude and environmental determinants of tropical forest biomass are still poorly understood. Here, we present a new synthesis and interpolation of the basal area and aboveground live biomass of old-growth lowland tropical forests across South America, based on data from 227 forest plots, many previously unpublished. Forest biomass was analyzed in terms of two uncorrelated factors: basal area and mean wood density. Basal area is strongly affected by local landscape factors, but is relatively invariant at regional scale in moist tropical forests, and declines significantly at the dry periphery of the forest zone. Mean wood density is inversely correlated with forest dynamics, being lower in the dynamic forests of western Amazonia and high in the slow-growing forests of eastern Amazonia. The combination of these two factors results in biomass being highest in the moderately seasonal, slow growing forests of central Amazonia and the Guyanas (up to 350 Mg dry weight ha−1) and declining to 200?250 Mg dry weight ha−1 at the western, southern and eastern margins. Overall, we estimate the total aboveground live biomass of intact Amazonian rainforests (area 5.76 × 106 km2 in 2000) to be 93±23 Pg C, taking into account lianas and small trees. Including dead biomass and belowground biomass would increase this value by approximately 10% and 21%, respectively, but the spatial variation of these additional terms still needs to be quantified.
650 $aAmazonia
650 $aBiomassa
650 $aCarbono
650 $aFertilidade do Solo
700 1 $aWOOD, D.
700 1 $aBAKER, T. R.
700 1 $aWRIGHT, J.
700 1 $aPHILLIPS, O. L.
700 1 $aCOCHRANE, T.
700 1 $aMEIR, P.
700 1 $aCHAVE, J.
700 1 $aALMEIDA, S.
700 1 $aARROYO, L.
700 1 $aHIGUCHI, N.
700 1 $aKILLEEN, T. J.
700 1 $aLAURANCE, S. G.
700 1 $aLEWIS, S. L.
700 1 $aMONTEAGUDO, A.
700 1 $aNEILL, D. A.
700 1 $aVARGAS, P. N.
700 1 $aPITMAN, N. C. A.
700 1 $aQUESADA, C. A.
700 1 $aSALOMÃO, R.
700 1 $aSILVA, J. N. M.
700 1 $aLEZAMA, A. T.
700 1 $aTERBORGH, J.
700 1 $aMARTÍNEZ, R. V.
700 1 $aVINCETI, B.
773 $tGlobal Change Biology$gv. 12, n. 7, p. 1107-1138, July 2006.
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