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利用地球上储量最大的可再生的植物纤维质转化制备燃料乙醇,对于减少温室效应,缓解能源紧张,提高环境质量具有重大意义。红麻是一种传统的速生高产的纤维作物,为提高红麻纤维质的糖转化率,采用H2O、H2SO4、NaOH溶液(121℃,60min)或白腐真菌P.sajor-caju固态培养的方法,对红麻秸秆进行预处理,比较了后续的纤维素酶催化红麻秸秆水解的纤维素转化率。结果表明,NaOH预处理样品的纤维素转化率达到82.24%,说明碱性预处理比较适合于红麻秸秆。微生物法预处理能有效去除红麻秸秆的木质素,提高样品的纤维素转化率,但耗时较长,糖分有所损失,可作为辅助预处理方法。
The use of regenerable plant fiber, the most abundant regenerable plant fiber on earth, for the production of fuel ethanol is of great importance for reducing greenhouse effect, alleviating energy shortage and improving environmental quality. In order to improve the conversion rate of kenaf fiber, kenaf is a traditional fast-growing and high-yielding fiber crop. Solid-state culture of P.sajor-caju with H20, H2SO4, NaOH solution (121 ℃, 60min) , The kenaf stalk was pretreated, and the subsequent cellulose conversion catalyzed by cellulase catalyzed kenaf straw hydrolysis was compared. The results showed that the cellulose conversion rate of NaOH pretreatment sample reached 82.24%, indicating that alkaline pretreatment is more suitable for kenaf straw. Microbiological pretreatment can effectively remove lignin from kenaf stalk and improve the cellulose conversion rate of the sample, but it takes longer time and loss of sugar, which can be used as assistant pretreatment method.