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| Leistritz, F. Larry; Hodur, Nancy M.; Senechal, Donald M.; Stowers, Mark D.; McCalla, Darold; Saffron, Chris M.. |
| Rising prices and uncertain supplies of petroleum, together with environmental concerns regarding fossil fuel combustion, has enhanced interest in biobased products and fuels. The work reported here analyzes the feasibility of a multi-product biorefinery using wheat straw as feedstock that produces ethanol, electricity, and cellulose nanofibers. The nanofibers (nanowhiskers) would be used as reinforcements in a biobased nanocomposite material that could substitute for fiberglass in many applications. The analysis indicates that, at 2005 prices and costs, the biorefinery would be marginally profitable. Anticipated advances in bioprocessing technology would enhance profitability. The facility would also make a substantial contribution to the biorefinery site... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Biomass; Biomaterials; Ethanol; Wheat straw; Cellulose nanowhiskers (CNW); Economic development; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/7323 |
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| Quiroz-Castañeda,Rosa E; Balcázar-López,Edgar; Dantán-González,Edgar; Martinez,Alfredo; Folch-Mallol,Jorge; Martínez Anaya,Claudia. |
| Cellulolytic properties of two white rot fungi, Bjerkandera adusta and Pycnoporus sanguineus, cultivated on wheat straw agar medium, were characterized and compared. Optimal growing parameters for maximum enzyme production for both fungi were wheat straw medium pH 5 and 28ºC. B. adusta showed, on the 6th day of culture, carboxymethylcellulose (CMC)ase activity levels 1.6 times higher than maximal P. sanguineus activity, achieved on the 8th day. B. adusta supernatants also displayed higher activity levels towards xylan (3.6-fold) compared to those of P. sanguineus. However, enzymes from P. sanguineus were more robust resisting one hour incubation at high temperatures (up to 80ºC), and exhibiting activity and stability in pH range from 2 to 8. Cellulolytic... |
| Tipo: Journal article |
Palavras-chave: B. adusta; Cellulases; P. sanguineus; Wheat straw; Xylanases. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400005 |
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| Díaz Serrano, Fidel René. |
| Con el objetivo de utilizar la paja de trigo como sustrato en el crecimiento de plántulas de brócoli se hicieron varios experimentos. En el primero se evaluaron 3 sustratos de paja de trigo con extracción de fenólicos con agua común. Las plántulas de brócoli presentaron porcentajes de inhibición entre 54.92 y 57.40 % en la parte aérea y entre 38.31 y 44.78 % en raíces con respecto al testigo. En el segundo se identificaron por cromatografía de capa fina y se cuantificaron por cromatografía líquida de alta resolución los ácidos p-cumárico y ferúlico como probables compuestos inhibidores del crecimiento. Los porcentajes de recuperación de estos ácidos fueron muy bajos con respecto a la concentración de fenólicos solubles totales (CFST) cuantificados por... |
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Palavras-chave: Paja de trigo; Sustratos; Fenólicos; Plántulas; Brócoli; Wheat straw; Substrates; Phenolics; Seedlings; Broccoli; Doctorado; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/497 |
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| Díaz Serrano, Fidel René. |
| Con el objetivo de utilizar la paja de trigo como sustrato en el crecimiento de plántulas de brócoli se hicieron varios experimentos. En el primero se evaluaron 3 sustratos de paja de trigo con extracción de fenólicos con agua común. Las plántulas de brócoli presentaron porcentajes de inhibición entre 54.92 y 57.40 % en la parte aérea y entre 38.31 y 44.78 % en raíces con respecto al testigo. En el segundo se identificaron por cromatografía de capa fina y se cuantificaron por cromatografía líquida de alta resolución los ácidos p-cumárico y ferúlico como probables compuestos inhibidores del crecimiento. Los porcentajes de recuperación de estos ácidos fueron muy bajos con respecto a la concentración de fenólicos solubles totales (CFST) cuantificados por... |
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Palavras-chave: Paja de trigo; Sustratos; Fenólicos; Plántulas; Brócoli; Wheat straw; Substrates; Phenolics; Seedlings; Broccoli; Doctorado; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/497 |
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| Gava,Ricardo; Freitas,Paulo S. L. de; Faria,Rogério T. de; Rezende,Roberto; Frizzone,José A.. |
| This study was conducted at the Agronomic Institute of Paraná (IAPAR) in Londrina, State of Paraná (PR), Brazil (latitude 23º18'S, longitude 51º09'W and average altitude of 585 m). The local climate, according to the classification of Köeppen, is Cfa type, i.e., humid subtropical climate, with rain in all seasons and can occur dry seasons during the winter. It was determined soil evaporation (E) under different coverage densities with residue from the wheat crop. The treatments were installed in weighting lysimeters of 2.66 m² and 1.3 m deep, which allows to determine E by the mass difference with measuring precision of 0.1mm at one hour intervals. Treatments consisted of 0; 2.5; 5 and 10 t ha-1 of wheat crop residues, placed evenly over each lysimeter. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wheat straw; Soil coverage; Water losses. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100010 |
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| Leistritz, F. Larry; Hodur, Nancy M.; Senechal, Donald M.; Stowers, Mark D.; McCalla, Darold; Saffron, Chris M.. |
| Rising prices and uncertain supplies of petroleum, together with environmental concerns regarding fossil fuel combustion, have enhanced interest in biobased products and fuels. This study analyzes the feasibility of a multi-product biorefinery that uses wheat straw as feedstock to produce ethanol, electricity, and cellulose nanofibers. Nanofibers (nanowhiskers) would be used as reinforcements in a biobased nanocomposite material that could substitute for fiberglass in many applications. The growth of a biobased industry could have major economic development implications for the Great Plains/Midwest region. |
| Tipo: Journal Article |
Palavras-chave: Biomass; Biomaterials; Cellulose nanofibers (CNFs); Economic development; Ethanol; Wheat straw; Agribusiness; Resource /Energy Economics and Policy. |
| Ano: 2009 |
URL: http://purl.umn.edu/90655 |
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