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|title: ||Miscanthus x giganteus Extractives: A Source of Valuable Phenolic Compounds and Sterols|
|authors: ||Villaverde, J. J.|
Domingues, R. M. A.
Freire, C. S. R.
Silvestre, A. J. D.
Neto, C. Pascoal
|keywords: ||Miscanthus x giganteus|
|issue date: ||2009|
|publisher: ||American Chemical Society|
|abstract: ||The chemical composition of the lipophilic extracts of bark and core, of the Miscanthus x giganteus stalk, was studied by gas chromatography-mass spectrometry (GC-MS). Aromatic compounds, sterols, and fatty acids, followed by long-chain fatty alcohols, were the major families of components present in the M. x giganteus stalk. Aromatic compounds are more abundant in the M. x giganteus bark (521 mg/kg of bark), with vanillic acid, vanillin, and p-hydroxybenzaldehyde as the major compounds of this family. In the M. x giganteus core, sterols represent about 949 mg/kg of dry core with beta-sitosterol, 7-oxo-beta-sitosterol, stigmasterol, and campesterol as the major components. The detection of small amounts of esters in the GC-MS analysis with short columns explains the small increase in the abundance of the identified families after alkaline hydrolysis. The high content of valuable sterols and aromatic compounds in M. x giganteus and, particularly, in the core, which is considered a residue in most applications, can open new perspectives for the integrated upgrading of this grass within the biorefinery perspective.|
|publisher version/DOI: ||http://dx.doi.org/10.1021/jf900071t|
|source: ||Journal of Agricultural and Food Chemistry|
|appears in collections||DQ - Artigos|
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