Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study

The lignocellulosic materials produced after each step of a biorefinery plant using simultaneous saccharification and fermentation (SSF) technology on wheat straw (Triticum spp.) for bioethanol production were characterized by spectroscopic and chromatographic techniques in order to investigate the...

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Main Authors: Luca Zoia, Anika Salanti, Eva-Lisa Tolppa, Davide Ballabio, Marco Orlandi
Format: Article
Language:English
Published: North Carolina State University 2017-01-01
Series:BioResources
Subjects:
Online Access:http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_12_1_1680_Zoia_Valorization_Side_Streams_SSF
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author Luca Zoia
Anika Salanti
Eva-Lisa Tolppa
Davide Ballabio
Marco Orlandi
author_facet Luca Zoia
Anika Salanti
Eva-Lisa Tolppa
Davide Ballabio
Marco Orlandi
author_sort Luca Zoia
collection DOAJ
description The lignocellulosic materials produced after each step of a biorefinery plant using simultaneous saccharification and fermentation (SSF) technology on wheat straw (Triticum spp.) for bioethanol production were characterized by spectroscopic and chromatographic techniques in order to investigate the macromolecular interactions between the lignin and polysaccharides. In order to valorize the lignin cakes, a purification step was set up and the extraction conditions (acid pretreatment, temperature, time, and NaOH concentration) were optimized by a chemiometric approach in terms of yield and purity. Residual carbohydrate impurities, free and/or chemically bonded to lignin (lignin carbohydrates complexes), were individuate as the most critical factor for a satisfactory lignin extraction. Finally, the lignin samples collected according to the optimized extraction conditions were chemically characterized and low molecular weight, high phenols concentration, and low carboxylic acids content were recognized as interesting features for industrial applications.
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spelling doaj.art-2009c30d859c44e0aeea701c3614421d2022-12-22T02:54:26ZengNorth Carolina State UniversityBioResources1930-21261930-21262017-01-011211680169610.15376/biores.12.1.1680-1696Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification StudyLuca Zoia0Anika Salanti1Eva-Lisa Tolppa2Davide Ballabio3Marco Orlandi4University of Milano-Bicocca; ItalyUniversity of Milano-Bicocca; ItalyUniversity of Milano-Bicocca; ItalyUniversity of Milano-Bicocca; ItalyItalyThe lignocellulosic materials produced after each step of a biorefinery plant using simultaneous saccharification and fermentation (SSF) technology on wheat straw (Triticum spp.) for bioethanol production were characterized by spectroscopic and chromatographic techniques in order to investigate the macromolecular interactions between the lignin and polysaccharides. In order to valorize the lignin cakes, a purification step was set up and the extraction conditions (acid pretreatment, temperature, time, and NaOH concentration) were optimized by a chemiometric approach in terms of yield and purity. Residual carbohydrate impurities, free and/or chemically bonded to lignin (lignin carbohydrates complexes), were individuate as the most critical factor for a satisfactory lignin extraction. Finally, the lignin samples collected according to the optimized extraction conditions were chemically characterized and low molecular weight, high phenols concentration, and low carboxylic acids content were recognized as interesting features for industrial applications.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_12_1_1680_Zoia_Valorization_Side_Streams_SSFPurification; Lignin; Wheat straw; Biorefinery; Ionic liquid
spellingShingle Luca Zoia
Anika Salanti
Eva-Lisa Tolppa
Davide Ballabio
Marco Orlandi
Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study
BioResources
Purification; Lignin; Wheat straw; Biorefinery; Ionic liquid
title Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study
title_full Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study
title_fullStr Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study
title_full_unstemmed Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study
title_short Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study
title_sort valorization of side streams from a ssf biorefinery plant wheat straw lignin purification study
topic Purification; Lignin; Wheat straw; Biorefinery; Ionic liquid
url http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_12_1_1680_Zoia_Valorization_Side_Streams_SSF
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