稀酸和稀碱预处理对四种不同生物质资源制备还原糖的影响

本论文探讨了不同浓度的稀H_2SO_4和稀NaOH预处理对大豆秸秆、水稻秸秆、象草和狼尾草四种不同生物质酶解制备还原糖的影响。结果表明,大豆秸秆、水稻秸秆、象草和狼尾草具有较高的纤维素和半纤维素含量,是制备还原糖的理想原料。与稀H_2SO_4预处理相比,经稀NaOH预处理后的样品表现出较好的酶解性能。通过使用4%的NaOH对大豆秸秆和狼尾草进行预处理,还原糖产量分别为145.8 mg/mL和319.2 mg/mL。此外,以1%NaOH预处理后的水稻秸秆和象草为原料,可以分别获得385.2 mg/mL和231.6 mg/mL还原糖产量。

Effects of dilute acid and alkali pretreatments on reducing sugar production from four different kinds of biomass

The effects of dilute acid and alkali pretreatments on the enzymatic hydrolysis of different kinds of biomass (soybean straw, rice straw, grassiness and pennisetum) were evaluated in the present study by H₂SO₄ and NaOH. Component analysis showed that the carbohydrate contents (cellulose and hemicellulose) of soybean straw, rice straw, grassiness and pennisetum were high enough for the reducing sugar production. Compared with dilute H₂SO₄ pretreatment, dilute NaOH-pretreated samples showed better performances on the enzymatic digestibility. 145.8 mg/mL and 319.2 mg/mL of reducing sugar yields were obtained from the 4.0% NaOH-pretreated soybean straw and pennisetum, respectively, meanwhile rice straw and grassiness pretreated with 1.0% NaOH released 385.2 mg/mL and 231.6 mg/mL of reducing sugars, respectively.