Autohydrolysis and organosolv process for recovery of hemicelluloses, phenolic compounds and lignin from grape stalks

被引：81

作者：

Amendola, D. ^{[1
]}

De Faveri, D. M. ^{[1
]}

Eguees, I. ^{[2
]}

Serrano, L. ^{[2
]}

Labidi, J. ^{[2
]}

Spigno, G. ^{[1
]}

机构：

[1] Univ Cattolica Sacro Cuore, Inst Oenol & Agrofood Engn, I-29122 Piacenza, Italy

[2] Univ Basque Country, Escuela Univ Politecn, San Sebastian 20018, Spain

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 107卷

关键词：

Autohydrolysis; Grape stalks; Lignocellulosic; Organosolv; Phenols; LIGNOCELLULOSIC MATERIALS; CALIGONUM-MONOGOLIACUM; ANTIOXIDANT ACTIVITY; PRETREATMENT; ETHANOL; HYDROLYSIS; CELLULOSE; PEROXIDE; BAGASSE; FIBER;

D O I：

10.1016/j.biortech.2011.12.108

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A combination of two environment-friend processes for hemicelluloses and lignin recovery from red grape stalks were investigated: an autohydrolysis pretreatment at 180 degrees C for 30 min followed by a non-catalysed ethanol organosolv step at 180 degrees C for 90 min. Hemicelluloses were precipitated by ethanol addition to autohydrolysis liquor, while lignin was tentatively precipitated by acidification of liquors from both the processes. Results suggest that stalks hemicelluloses can be easily hydrolysed requiring a milder treatment to reduce sugar degradation, while the organosolv process did not give a consistent delignification. Autohydrolysis allowed a recovery of 2% (on stalks d.m.) of total phenols in the liquor. Organosolv liquor had a higher concentration of phenols (corresponding to 0.72% of stalks d.m.) which almost completely precipitated with lignin. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：267 / 274

页数：8

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