【摘要】 采用高效液相色谱(HPLC)和气质联用(GC-MS)色谱技术对玉米秸秆蒸汽爆破降解产物进行分析。玉米秸秆经蒸汽爆破预处理后,其纤维素、半纤维素和木质素降解损失分别为9.60%、47.98%和17.55%。采用HPLC对碳水化合物降解和分解产物定量分析,100g玉米秸秆预处理后,产生甲酸2.10g、乙酸2.00g、乙酰丙酸0.10g、5-羟甲基糠醛0.08g和糠醛0.13g。采用GC-MS对木质素和提取物降解产物定性分析,共检测出14种芳香类化合物、22种脂肪酸类化合物和5种呋喃化合物。更多还原

【Abstract】 A variety of degraded products from corn stalk after steam-explosion pretreatment were identified by HPLC and GC-MS analysis. The losses of cellulose, hemicellulose and lignin were 9.60%, 47.98% and 17.55%, respectively, when corn stalk was pretreated by steam-explosion. Quantitative analysis of degraded products from carbohydrates indicated that 2.10g formic acid, 2.00g acetic acid, 0.10g levulinic acid, 0.08g 5-hydroxymethylfurfural and 0.13g furfural were produced from 100g corn stalk after pretreatment. The qualitative analysis of degraded products from lignin and extractive indicated that 14 aromatic compounds, 22 aliphatic acids and 5 furan compounds were produced.更多还原