Structural components in Sorghum stem biomass
| Autor: | W.R Richie, G.G McBee |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Arabinose
Environmental Engineering biology Renewable Energy Sustainability and the Environment Bioengineering General Medicine Xylose Sorghum biology.organism_classification chemistry.chemical_compound Horticulture chemistry Botany Lignin Pith Hemicellulose Cellulose Waste Management and Disposal Sweet sorghum |
| Zdroj: | Bioresource Technology. 38:15-22 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/0960-8524(91)90216-7 |
| Popis: | Sorghum vegetative biomass is a renewable resource for energy production and forage. Twelve sorghum entries were evaluated for stem quality by determining concentrations of the structural components (SC), hemicellulose (HC), lignin (LG), and cellulose (CL), within the stem and distribution between the rind and pith. Ranges of concentrations for the total stem were 205·9–299·8, 47·8–78·0 and 258·8–317·3 mg g −1 of stem dry matter for HC, LG, and CL, respectively. Cellulose was the predominant component in the rind, whereas HC was the major component of the pith in most entries. Hemicellulose was more evenly distributed between the pith and rind than either CL or LG. Stems from six of the entries were used to isolate HC and two types, designated A and B, were found. Levels of hemicellulose A (HCA) were approximately twice those of hemicellulose B (HCB). Hemicellulose A contained more xylose than HCB, but less glucose, galactose, and arabinose. Both types of HC contained uronic acids, but melibiose appeared to also be a component of HCA. More component differences were present for HCB than HCA among entries. Structural components are not homogeneously distributed between the rind and pith of sorghum stems. It may be desirable to consider SC variability among lines and hybrids for utilization of the vegetative biomass in energy conversion processes. |
| Databáze: | OpenAIRE |
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