Effect of pretreatment and enzymatic hydrolysis on the physical-chemical composition and morphologic structure of sugarcane bagasse and sugarcane straw
| Autor: | Roberto da Silva, Olavo Micali Perrone, Sebastião Roberto Taboga, Eleni Gomes, Maurício Boscolo, Marcia Maria de Souza Moretti, Christiane da Costa Carreira Nunes |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2016 |
| Předmět: |
Glycerol
Environmental Engineering 020209 energy Bioengineering 02 engineering and technology 010501 environmental sciences Saccharification Lignin 01 natural sciences Hydrolysis chemistry.chemical_compound Microscopy Electron Transmission Cell Wall Polysaccharides Enzymatic hydrolysis 0202 electrical engineering electronic engineering information engineering Hemicellulose Sugarcane biomass Biomass Cellulose Microwaves Waste Management and Disposal 0105 earth and related environmental sciences Aqueous solution Renewable Energy Sustainability and the Environment Chemistry Sulfuric acid Monosaccharides food and beverages General Medicine Straw Enzymes Saccharum Solutions Biochemistry Thermogravimetry Bagasse Microwave Pretreatment Plant Shoots Biotechnology Nuclear chemistry |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2016.08.075 |
| Popis: | Made available in DSpace on 2018-12-11T17:29:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-11-01 The present work aimed to study the effect of the pretreatment of sugarcane bagasse and straw with microwave irradiation in aqueous and acid glycerol solutions on their chemical composition, fiber structure and the efficiency of subsequent enzymatic hydrolysis. Thermogravimetric analysis showed that the pretreatment acted mainly on the lignin and hemicellulose fractions of the bagasse, whereas, in the straw, lesser structural and chemical changes were observed. The images from transmission electron microscopy (TEM) revealed that treating bagasse and straw with acid glycerol solution loosened the cell walls and there was a breakdown in the pit membrane. The treated material was submitted to hydrolysis for 72 h and higher yields of reducing sugars were observed compared to the untreated material (250.9 mg/g from straw and 197.4 mg/g from bagasse). TEM images after hydrolysis confirmed the possible points of access of the enzymes to the secondary cell wall region of the pretreated biomass. Univ. Estadual Paulista – IBILCE/UNESP Univ. Estadual Paulista – IBILCE/UNESP |
| Databáze: | OpenAIRE |
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