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| Registros recuperados: 227 | |
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| Wallander, Steven; Claassen, Roger; Nickerson, Cynthia J.. |
| The recent 9-billion-gallon increase in corn-based ethanol production, which resulted from a combination of rising gasoline prices and a suite of Federal bioenergy policies, provides evidence of how farmers altered their land-use decisions in response to increased demand for corn. As some forecasts had suggested, corn acreage increased mostly on farms that previously specialized in soybeans. Other farms, however, offset this shift by expanding soybean production. Farm-level data reveal that the simultaneous net expansion of corn and soybean acreage resulted from a reduction in cotton acreage, a shift from uncultivated hay to cropland, and the expansion of double cropping (consecutively producing two crops of either like or unlike commodities on the same... |
| Tipo: Report |
Palavras-chave: Agricultural Resource Management Survey (ARMS); Bioenergy; Ethanol; Indirect effects; Land use; Corn production; Environmental impacts; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/117982 |
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| Ribeiro,Bernardo Dias; Nascimento,Rafaella Ferreira; Barreto,Daniel Weingart; Coelho,Maria Alice Zarur; Freitas,Suely Pereira. |
| Mauritia vinifera (buriti) is a palm tree that grows wild in different areas of Brazil, particularly in the Amazonian region. The buriti oil is rich in carotenoids, especially in β-carotene. The growing interest in other natural sources of β-carotene has stimulated the industrial use of buriti as a raw material for pulp oil extraction. Most processes are based on the conventional technologies, involving drying and pressing the pulp for oil recovery and further separation of carotenoids in a liquid phase using organics solvents. In the present work, the ethanol-based process was evaluated for simultaneous carotenoids recovering and fractionating from buriti pulp. The raw material and ethanol, 1:4 ratio, were placed in an erlenmeyer flask and maintained at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beta-carotene; Vegetable oil; Ethanol; Buriti. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452010000300003 |
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| Rodrigues,Paulo Henrique Mazza; Gomes,Rodrigo da Costa; Meyer,Paula Marques; Borgatti,Laura Maria Oliveira; Franco,Fernando Masello Junqueira; Godoy,Gilson Luiz Alves de. |
| The objective of this study was to evaluate the chemical composition, fermentation patterns and aerobic stability of sugarcane silages with addition of amino acid production (monosodium glutamate) by-product (APB) and microbial inoculants. Mature sugarcane was chopped and ensiled in laboratory silos (n = 4/treatment) without additives (control) and with APB (10 g/kg), Pioneer 1174® (PIO, 1.0 mg/kg, Lactobacillus plantarum + Streptoccoccus faecium, Pioneer), Lalsil Cana (2.0 mg/kg, Lactobacillus buchineri, Lallemand) or Mercosil Maís 11C33® (1.0 mg/kg, Lactobacillus buchineri + Lactobacillus plantarum + Streptoccoccus faecium, Timac Agro). Fresh silage and silage liquor samples were obtained to assess pH, chemical composition and organic acid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aerobic stability; Ammonia; Ethanol; Lactic acid bacteria; Saccharum officinarum L. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600011 |
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| Novinski,Charles Ortiz; Junges,Daniel; Schmidt,Patrick; Rossi Junior,Paulo; Carvalho,João Paulo Gomes de; Teixeira,Rodrigo de Almeida. |
| The present experimental assay evaluated the effect of lab silo sealing methods on the ensilage of the sugarcane, with or without microbial additives (Lactobacillus plantarum and Propionibacterium acidipropionici). Twenty-liter plastic buckets were used as experimental silos, which were sealed with either a polyethylene sheet (silo cover with a mesh size of 200 µm) or an appropriate plastic lid equipped with Bunsen valve. Silos were stored for 30, 60, or 90 days. Fermentative losses, chemical composition, organic acids, ethanol and aerobic stability were evaluated. The sealing method employed did not influence most of evaluated variables, showing a small decrease of effluent production in silos covered with polyethylene sheet. The microbial additive did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ensilage; Ethanol; Lactobacillus plantarum; Plastic sheet; Propionibacterium acidipropionici. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200005 |
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| Ávila,Carla Luiza da Silva; Valeriano,Alexandre Rocha; Pinto,José Cardoso; Figueiredo,Henrique César Pereira; Rezende,Adauton Vilela de; Schwan,Rosane Freitas. |
| The aim of this research was to evaluate the effect of microbial additives containing heterofermentative or homofermentative bacteria on the chemical and microbiological characteristics of sugar cane (Saccharum spp) silages. Sugar cane was inoculated with Lactobacillus plantarum, L. paracasei, L. brevis or L. buchneri previously isolated from sugar cane silages or commercial inoculants containing L. buchneri or L. plantarum. Silages were produced in laboratory silos (10 × 60 cm PVC tubes) and evaluated 90 days after ensiling. A randomized complete design was used with eight treatments (seven inoculants and control - without inoculant) and three replications. The inoculation with bacteria affected lactic acid bacteria, yeast populations, volatile fatty... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acetic acid; Ethanol; Heterofermentative bacteria; Lactic acid; Lactobacillus; Yeasts. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100004 |
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| Magalhães,Felipe Antunes; Valadares Filho,Sebastião de Campos; Menezes,Gustavo Chamon de Castro; Gionbelli,Mateus Pies; Zanetti,Diego; Machado,Marcelo Grossi; Pina,Douglas dos Santos; Komura,Koiti. |
| The objective of this study was to evaluate low and high Brix diets, treated or not with 5 g of calcium oxide per kg of natural matter, and corn silage on intake, digestibility and performance of beef cattle. Forty cattle with initial body weight (BW) of 350 kg were used: five composed the control group, 30 were distributed into random blocks (control) and the other five were distributed in a 5 × 5 incomplete Latin square, with the objective of determining digestibility. The 30 animals evaluated for performance were slaughtered and empty body weight (EPW), carcass dressing and meat cuts were determined. The diet with corn silage (CS) presented the best intake of the other ingredients and the best weight gain, except for neutral detergent fiber intake in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibility; Ethanol; Fermentation; Treatment. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600026 |
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| Magalhães,Felipe Antunes; Valadares Filho,Sebastião de Campos; Menezes,Gustavo Chamon de Castro; Machado,Marcelo Grossi; Zanetti,Diego; Pina,Douglas dos Santos; Pereira,Odilon Gomes; Paulino,Mário Fonseca. |
| The objective of this study was to evaluate the effect of sugar cane ensilage with different Brix degrees, with or without the addition of 0.5% of calcium oxide (lime) on the chemical composition and fermentation losses of silages. A complete random design in a 9 × 2 factorial arrangement was used. Experimental silos were used, ensilage was done every 15 days with Brix measuring, and they were opened after 30 days of fermentation. As the Brix degree of the ensiled material increased, the contents of dry matter (DM) increased and contents of ash, crude protein (CP) and fibers (neutral and acid detergent fiber corrected for proteins - NDFap and ADFap) reduced. After fermentation, DM content of the silage presented a linear increase with the Brix degree... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brix; Calcium oxide; Ethanol; Sugar cane silage. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200004 |
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| Cavali,Jucilene; Pereira,Odilon Gomes; Valadares Filho,Sebastião de Campos; Porto,Marlos Oliveira; Fernandes,Francisco Eden Paiva; Garcia,Rasmo. |
| The effects of different ratios of sugarcane and elephant grass (0:100, 25:75, 50:50, 75:25 and 100:0% of the natural basis) were assessed on the chemical composition and losses in silages treated with a bacterial inoculant, using laboratory silos. A 2 × 5 factorial arrangement (with and without inoculant and five elephant grass ratios) in a randomized blocks design with three replications was used. Interaction was observed in the sugarcane and elephant grass ratio × bacterial inoculant for crude protein (CP) and pH. The other variables were influenced only by the increasing proportions of elephant grass. The contents of dry matter, neutral detergent fiber corrected for ashes and protein, acid detergent fiber, insoluble protein in acid detergent fiber,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Effluent; Ethanol; Nutritional value; Organic acids; Soluble sugars. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300003 |
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| Pedroso,André de Faria; Pedroso,Alexandre Mendonça; Barioni Júnior,Waldomiro; Souza,Gilberto Batista de. |
| The objective was to evaluate the effects of laboratory-silo type and method of silage extract production, respectively, on sugarcane silage fermentation and recovery of fermentation products. Sugarcane was mechanically harvested and ensiled in three different types of laboratory silos (five replicates): 9.7 × 30 cm PVC tubes with tight lids, equipped or unequipped with Bunsen valves, and 20 L plastic buckets with tight lids and Bunsen valves. Three methods were used to produce silage extracts for pH, ethanol, acetic and lactic acids determination: extraction of silage juice by a hydraulic press and production of water extracts using a stomacher or a blender. Total dry matter loss (231 g/kg DM) was not affected by silo type. No interactions between silo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acetic acid; Ethanol; Laboratory silo; Lactic acid; Silage extract; Sugarcane silage. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000400169 |
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| Pedroso,André de Faria; Nussio,Luiz Gustavo; Paziani,Solidete de Fátima; Loures,Daniele Rebouças Santana; Igarasi,Mauricio Scoton; Coelho,Rodrigo Michelini; Packer,Irineu Humberto; Horii,Jorge; Gomes,Luiz Humberto. |
| Sugar cane silages are characterized by extensive yeast activity, alcohol production and great dry matter - DM - losses. Better knowledge of the fermentation process is fundamental to the development of efficient ensilage techniques for this forage. This study evaluates temporal changes in chemical composition, DM losses and epiphytic microflora in sugar cane silage. Mature sugar cane, variety RB835486 (12 months of vegetative growth), was hand harvested, processed in a stationary chopper and ensiled in 20-L plastic buckets provided with valves for gas release and a device for effluent collection. Laboratory silos were kept at ambient temperature and sampled after ½, 1, 2, 3, 7, 15, 45, 90, 120 and 180 days. Ethanol concentration reached 6.4% in DM after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethanol; Water soluble carbohydrates; Losses; Yeasts; Bacteria. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500003 |
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| Pedroso,André de Faria; Nussio,Luiz Gustavo; Loures,Daniele Rebouças Santana; Paziani,Solidete de Fátima; Ribeiro,José Leonardo; Mari,Lucas José; Zopollatto,Maity; Schmidt,Patrick; Mattos,Wilson Roberto Soares; Horii,Jorge. |
| Utilization of sugarcane Saccharum officinarum L. silage is increasing in Brazil but intensive ethanol production during fermentation reduces forage quality. This experiment aimed to evaluate the effects of additives on fermentation and aerobic stability of sugarcane silages produced in minisilos. Treatments were (fresh basis): untreated silage (control), urea (5.0 g kg-1), sodium benzoate (1.0 g kg-1), potassium sorbate (0.3 g kg-1), Lactobacillus plantarum (1 x 10(6) cfu g-1), and Lactobacillus buchneri (3.64 x 10(5) cfu g-1). At the 94th day after ensilage, ethanol concentration was lower in urea, benzoate, sorbate and L. buchneri supplemented silages and higher in L. plantarum inoculated silage, as compared to control. Urea and benzoate treated silages... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactobacillus buchneri; Lactobacillus plantarum; Ethanol; Benzoate; Sorbate. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600004 |
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| Registros recuperados: 227 | |
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