| Titre : | Influence of Incubation Time on the Physicochemical Properties of the isolated hemicelluloses from steam-exploded lespedeza stalks (2010) |
| Auteurs : | Kun Wang, Auteur ; Feng Xu, Auteur ; Run-Cang Sun, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 18, Septembre 2010) |
| Article en page(s) : | pp. 8797–8804 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Physicochemical properties |
| Résumé : | Hemicellulosic polysaccharides were isolated from the raw and steam-exploded Lespedeza crytobytrya stalks by sequential 1 M NaOH extraction and fractionated into Hemi-a and Hemi-b fractions by acidification and ethanol precipitation, respectively. The Hemi-a fractions had relatively lower molecular weights and took up 84.6−95.5% of the total released hemicelluloses. After steam explosion, both hemicellulosic fractions were obviously degraded, and a certain amount of glucose or oligosaccharides derived from the amorphous cellulose was coisolated. The influence of increasing incubation time from 2 to 10 min is further discussed, based on the physicochemical properties of the obtained hemicelluloses characterized in terms of sugar component, gel permeation chromatography (GPC), thermal stability, and 13C NMR spectroscopy analysis. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie101180p |
