Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments
Lignocellulosic biomass is an abundant renewable resource that has the potential to displace petroleum in the production of biomaterials and biofuels. In the present study, the fractionation of different lignin biopolymers from hybrid poplar based on organosolv pretreatments using 80% aqueous methan...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2014/194726 |
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| author | Miao Wu Jinhui Pang Xueming Zhang Runcang Sun |
| author_facet | Miao Wu Jinhui Pang Xueming Zhang Runcang Sun |
| author_sort | Miao Wu |
| collection | DOAJ |
| description | Lignocellulosic biomass is an abundant renewable resource that has the potential to displace petroleum in the production of biomaterials and biofuels. In the present study, the fractionation of different lignin biopolymers from hybrid poplar based on organosolv pretreatments using 80% aqueous methanol, ethanol, 1-propanol, and 1-butanol at 220°C for 30 min was investigated. The isolated lignin fractions were characterized by Fourier transform infrared spectroscopy (FT-IR), high-performance anion exchange chromatography (HPAEC), 2D nuclear magnetic resonance (2D NMR), and thermogravimetric analysis (TGA). The results showed that the lignin fraction obtained with aqueous ethanol (EOL) possessed the highest yield and the strongest thermal stability compared with other lignin fractions. In addition, other lignin fractions were almost absent of neutral sugars (1.16–1.46%) though lignin preparation extracted with 1-butanol (BOL) was incongruent (7.53%). 2D HSQC spectra analysis revealed that the four lignin fractions mainly consisted of β-O-4′ linkages combined with small amounts of β-β′ and β-5′ linkages. Furthermore, substitution of Cα in β-O-4′ substructures had occurred due to the effects of dissolvent during the autocatalyzed alcohol organosolv pretreatments. Therefore, aqueous ethanol was found to be the most promising alcoholic organic solvent compared with other alcohols to be used in noncatalyzed processes for the pretreatment of lignocellulosic biomass in biorefinery. |
| format | Article |
| id | doaj-art-4c5f8b909b264efb871f4df6d3b7e316 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | International Journal of Polymer Science |
| spelling | doaj-art-4c5f8b909b264efb871f4df6d3b7e3162025-02-03T05:57:08ZengWileyInternational Journal of Polymer Science1687-94221687-94302014-01-01201410.1155/2014/194726194726Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv PretreatmentsMiao Wu0Jinhui Pang1Xueming Zhang2Runcang Sun3Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, ChinaBeijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, ChinaBeijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, ChinaBeijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, ChinaLignocellulosic biomass is an abundant renewable resource that has the potential to displace petroleum in the production of biomaterials and biofuels. In the present study, the fractionation of different lignin biopolymers from hybrid poplar based on organosolv pretreatments using 80% aqueous methanol, ethanol, 1-propanol, and 1-butanol at 220°C for 30 min was investigated. The isolated lignin fractions were characterized by Fourier transform infrared spectroscopy (FT-IR), high-performance anion exchange chromatography (HPAEC), 2D nuclear magnetic resonance (2D NMR), and thermogravimetric analysis (TGA). The results showed that the lignin fraction obtained with aqueous ethanol (EOL) possessed the highest yield and the strongest thermal stability compared with other lignin fractions. In addition, other lignin fractions were almost absent of neutral sugars (1.16–1.46%) though lignin preparation extracted with 1-butanol (BOL) was incongruent (7.53%). 2D HSQC spectra analysis revealed that the four lignin fractions mainly consisted of β-O-4′ linkages combined with small amounts of β-β′ and β-5′ linkages. Furthermore, substitution of Cα in β-O-4′ substructures had occurred due to the effects of dissolvent during the autocatalyzed alcohol organosolv pretreatments. Therefore, aqueous ethanol was found to be the most promising alcoholic organic solvent compared with other alcohols to be used in noncatalyzed processes for the pretreatment of lignocellulosic biomass in biorefinery.http://dx.doi.org/10.1155/2014/194726 |
| spellingShingle | Miao Wu Jinhui Pang Xueming Zhang Runcang Sun Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments International Journal of Polymer Science |
| title | Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments |
| title_full | Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments |
| title_fullStr | Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments |
| title_full_unstemmed | Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments |
| title_short | Enhancement of Lignin Biopolymer Isolation from Hybrid Poplar by Organosolv Pretreatments |
| title_sort | enhancement of lignin biopolymer isolation from hybrid poplar by organosolv pretreatments |
| url | http://dx.doi.org/10.1155/2014/194726 |
| work_keys_str_mv | AT miaowu enhancementofligninbiopolymerisolationfromhybridpoplarbyorganosolvpretreatments AT jinhuipang enhancementofligninbiopolymerisolationfromhybridpoplarbyorganosolvpretreatments AT xuemingzhang enhancementofligninbiopolymerisolationfromhybridpoplarbyorganosolvpretreatments AT runcangsun enhancementofligninbiopolymerisolationfromhybridpoplarbyorganosolvpretreatments |