Pulp properties resulting from different pretreatments of wheat straw and their influence on enzymatic hydrolysis rate

• Autor(a) principal: Rosseberg, Christine
• Data de Publicação: 2014
• Outros Autores: Steffien, Doreen, Bremer, Martina, Koening, Swetlana, Carvalheiro, Florbela, Duarte, Luís C., Moniz, Patricia, Hoernicke, Max, Bertau, Martin, Fischer, Steffen
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.9/2655
• topic: Enzymatic hydrolysis; Wheat Straw; Pre-treatment; Autohydrolysis; Natural pulping; Alkaline pulping

Wheat straw was subjected to three different processes prior to saccharification, namely alkaline pulping, natural pulping and autohydrolysis, in order to study their effect on the rate of enzymatic hydrolysis. Parameters like medium concentration, temperature and time have been varied in order to optimize each method. Milling the raw material to a length of 4 mm beforehand showed the best cost–value-ratio compared to other grinding methods studied. Before saccharification the pulp can be stored in dried form, leading to a high yield of glucose. Furthermore the relation of pulp properties (i.e. intrinsic viscosity, KLASON-lignin and hemicelluloses content, crystallinity, morphology) to cellulose hydrolysis is discussed.