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首页> 外文OA文献 >EFFECTIVE ALKALINE PEROXIDE OXIDATIONudPRETREATMENT OF SHEA TREE SAWDUST FORudTHE PRODUCTION OF BIOFUELS: KINETICS OFudDELIGNIFICATION AND ENZYMATICudCONVERSION TO SUGAR AND SUBSEQUENTudPRODUCTION OF ETHANOL BY FERMENTATIONudUSING Saccharomyces cerevisiae
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EFFECTIVE ALKALINE PEROXIDE OXIDATIONudPRETREATMENT OF SHEA TREE SAWDUST FORudTHE PRODUCTION OF BIOFUELS: KINETICS OFudDELIGNIFICATION AND ENZYMATICudCONVERSION TO SUGAR AND SUBSEQUENTudPRODUCTION OF ETHANOL BY FERMENTATIONudUSING Saccharomyces cerevisiae

机译：有效的碱金属过氧化物氧化 udSHEA TREE木屑的预处理 ud生物燃料的生产：动力学 ud脱胶和酶 ud转换为糖及其后的 ud通过发酵生产乙醇 ud使用酿酒酵母

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Shea tree sawdust delignification kinetic data during alkaline peroxide pretreatment wereudinvestigated at temperatures of 120 °C, 135 °C, and 150 °C. The activation energy during delignification wasud76.4 kJ/mol and the Arrhenius constant was calculated as 8.4 x 106 per min. The reducing sugar yield for theudtreated to the untreated biomass was about 22-fold. Enzymatic hydrolysis conditions studied were; time (72 hudand 96 h), substrate concentration (20, 30, 40, and 50 g/L), and enzyme loadings (10, 25, 40, 50 FPU/g dryudbiomass), which showed the optimum conditions of 96 h, 40 g/L, and 25 FPU/g dry biomass at 45 °C hydrolysisudtemperature. At the optimized enzymatic hydrolysis conditions, the reducing sugar yield was 416.32 mgudequivalent glucose/g treated dry biomass. After 96 h fermentation of treated biomass, the ethanol obtained atud2% effective cellulose loading was 12.73 g/L. Alkaline peroxide oxidation pretreatment and subsequentudenzymatic hydrolysis improved the ethanol yield of the biomass.
机译：在120°C，135°C和150°C的温度下对碱性过氧化物预处理过程中的乳木果木屑去木质素动力学数据进行了研究。脱木素过程中的活化能为ud76.4 kJ / mol，Arrhenius常数经计算为8.4 x 106 / min。未经处理的生物质的还原糖产量约为22倍。研究了酶水解条件；时间（72 h udand 96 h），底物浓度（20、30、40和50 g / L）和酶载量（10、25、40、50 FPU / g干生物量），显示了最佳条件在45°C水解超温下96小时，40 g / L和25 FPU / g干生物质。在优化的酶水解条件下，还原糖产量为416.32 mg /当量葡萄糖/ g处理的干生物量。处理过的生物质发酵96小时后，有效纤维素负载量为ud2％时获得的乙醇为12.73 g / L。碱性过氧化物氧化预处理和随后的双酶水解提高了生物质的乙醇产率。

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