Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342205
Title: Novel uses of lignin and hemicellulosic sugars from acid-hydrolysed lignocellulosic materials
Author: Zahedifar, Mojtaba
ISNI:       0000 0001 3576 4973
Awarding Body: University of Aberdeen
Current Institution: University of Aberdeen
Date of Award: 1996
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Abstract:
Lignocellulosic materials (LM) are an ever present renewable and available energy source. The energy stored by photosynthesis in the form of vegetation is about ten times more than world's annual energy consumption (Zsuffa, 1982). This source is the only alternative for chemical production after fossil fuels. Formation of organic acids (mainly acetic acid) from hemicellulose during steam treatment of LM leads to acid hydrolysis of cell wall components. Solubilization of hemicellulose and depolymerization of lignin are the most important changes that occur during the process. During hydrolysis of LM appreciable amounts of sugar degradation products, organic acids and phenolics are produced. Inhibitory effects of the compounds on yeast during alcoholic fermentation have been reported and several methods have been proposed to overcome the problem. Among the new compounds phenolics derived from lignin depolymerization have received most attention. Another problem during enzymic saccharification of cellulose is partial inactivation of cell free enzymes. The above mentioned constraints were investigated in this study.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.342205  DOI: Not available
Keywords: Lignocellulose Molecular biology Cytology Genetics Biochemistry
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