Hydrolysis of pretreated rice straw with surfactants at low cellulase dosage

论文发布时间：[2010-01-26] 范文大全编辑：Voive.net

所有作者：袁兴中梁运姗曾光明王伟伟

作者单位：Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education,College of Environmental Science and Engineering,Hunan University

论文摘要：The effects of three surfactants (Tween ８０， saponin and monorhamnolipid) on the hydrolysis of NaOH-pretreated rice straw by low dosage of cellulase were studied。 The results indicated that with a relatively low cellulase dosage (４ FPU g-１ substrate)， all surfactants were able to enhance the enzymatic hydrolysis， while the biosurfactant monorhamnolipid was demonstrated to be more active than Tween ８０ and saponin。 Monorhamnolipid at ０。００６％ increased reducing sugar yield by ２３。１５％， and the maximal sugar yield was obtained within half of the time compare to the control required。 The cellulase losed ６７％ of its activity in the control， while the activity lost ratios were ３１％~４３％ in the presence of the surfactants。 The surfactants addition did not affect the pH of the hydrolysis system。 This study provides an opportunity of decreasing enzyme dosage in hydrolysis of agricultural solid waste rich in cellulose。

关键词： surfactant cellulose enzymatic hydrolysis cellulase monorhamnolipid

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