基于稀酸水解法的制糖残渣纤维素糖化研究

Studies on Sugar Residue Saccharification by Diluted Acid Hydrolysis

甘蔗渣、甜菜粕和甜高粱秸为当前糖厂的主要制糖残渣废弃物,为解决其再利用的实际问题,进行了制糖残渣纤维素糖化研究。采用标准方法测定各制糖残渣的纤维素、半纤维素、木质素、水分和灰分含量,应用自行设计的耐高温高压反应器,以稀酸水解法糖化纤维素,分别得到69.89%、64.88%和70.28%的最高还原糖得率;以还原糖得率为指标,优化各自反应条件,进一步分析了各因素对三种纤维素原料还原糖得率的影响。

Sugarcane bagasse, beet pulp and sweet sorghum stalk are main sugar residue in sugar plants. In order to solve the re-using issue of residue, studies on sugar residue saccarification were conducted. A standard method was used to determine the contents of cellulose, semi-cellulose and lignin of three sugar residues. A self-designed reactor which can bear high temperature and pressure was adopted and cellulose materials were saccharificated by diluted acids hydrolysis. The highest reducing sugar yields of the three sugar residue materials were 69.89%, 64.88% and 70.28%, respectively. Based on data of the reducing sugar yield, reaction conditions were optimized, the influences of each factor on reducing sugar yield from three cellulose materials were analyzed.