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| Registros recuperados: 11 | |
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| Gaitán-Hernández,Rigoberto; Esqueda,Martín; Gutiérrez,Aldo; Beltrán-García,Miguel. |
| The chemical changes in barley-straw (BS), wheat-straw (WS) and vineyard-pruning (VP) substrates were determined during colonization of Lentinula edodes mycelia (during primordium development) in solid state fermentation. Primordia appeared 39-50 days after inoculation. VP appeared to promote early sporophore initiation. The concentration of hemicellulose in BS and VP decreased gradually from 25.5% to 15.6% and from 15.8% to 12.3%, respectively. However in WS, hemicellulose decreased from 27.2% to 9.5%. Lignin broke down continuously in BS and WS, with 31.8% and 34.4% degradation, respectively; higher than that of cellulose. During the pinning stage, the C:N ratio decreased in VP and BS, but not in WS. On all substrates the phenols decreased notably... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural residues; Vegetative growth; Chemical properties; Shiitake mushroom. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100004 |
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| Ahmadi,Seyed Mohammad; Siahsar,Barat Ali. |
| In this study, a range of physicochemical properties (dimensions, kernel volume, mass unit, bulk and true densities, porosity, terminal velocity, static friction coefficient against different surfaces, oil content and fatty acids composition) of the Bojnordi and Fakhri cultivars of grape seeds were studied. Fatty acid composition for both cultivars of grape seeds consisted of palmitic, stearic, oleic, linoleic and linolenic acid. The values for palmitic, stearic, oleic, linoleic and linolenic acid for the Bojnordi cultivar were 9.56, 4.37, 22.87, 62.85 and 0.33% and for the Fakhri cultivar were 9.22, 4.33, 19.75, 66.40 and 0.28%, respectively. All physical properties of the grape seed cultivars were significantly affacted by the moisture content in the... |
| Tipo: Journal article |
Palavras-chave: Chemical properties; Fatty acid; Grape seed; Physical properties. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200014 |
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| Magalhães, Washington Luiz Esteves; Pereira, José Carlos Duarte; Muñiz, Graciela Ines Bolzon; Klock, Umberto; Silva, José Reinaldo Moreira da. |
| Foi estudado o uso da espectroscopia de infravermelho próximo (NIR) em conjunto com a regressão por mínimos quadrados parciais (PLS) na determinação de propriedades químicas e anatômicas da madeira. As amostras de madeira de sete espécies de eucaliptos e uma de pinus foram analisadas quanto aos teores de lignina e extrativos totais, comprimento e largura de fibra, espessura de parede e poder calorífico superior. Os espectros de NIR foram obtidos a partir de amostras e serragem de madeira. A calibração dos espectros mostrou-se eficiente para uso na predição das propriedades teor de lignina e espessura de parede, com os coeficientes de correlação acima de 0,9 e 0,8, respectivamente. Obteve-se uma única curva de calibração do teor de lignina para todas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Infravermelho próximo; Pinus; Eucaliptos; Propriedades químicas; Propriedades anatômicas Near infrared; Pine; Eucalyptus; Chemical properties; Anatomical properties. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/238 |
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| Althaus,Daiana; Gianello,Clesio; Tedesco,Marino José; Silva,Kelly Justin da; Bissani,Carlos Alberto; Felisberto,Regina. |
| ABSTRACT: The parent geological materials and formation factors influence the chemical, physical, and mineralogical properties and composition of the soil. Therefore, the aims of this study were to determine the chemical and some physical and mineralogical properties of the soil useful for agricultural practice; to determine the natural contents of the semitotal metals in soils of the state of Rio Grande do Sul (Brazil); and to suggest use of the quality reference values (QRVs) in accordance with Resolution 420/2009 of the National Commission for the Environment (Conama). To determine some soil properties useful for agricultural, 254 surface soil samples from areas without known human influence (native grasslands or forests) were analyzed according to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Native soils; Chemical properties; Heavy metals; Quality reference values. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100502 |
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| Registros recuperados: 11 | |
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