香蕉皮半纤维素与木质素脱除工艺研究

Study on the Removal Process of Hemicellulose and Lignin from Banana Peel

摘要: 以香蕉皮为原料，探讨去除半纤维素与木质素获得优质香蕉皮纤维素的最佳工艺。对时间、温度、去除剂用量等因素进行单因素试验后，运用正交试验设计方法分别优化了去除半纤维素与木质素的最优条件。NaOH体积分数为3%、搅拌时间为45 min、温度为60℃时，半纤维素的去除效果最佳，去除率为25.56%；NaClO质量浓度为20 g/L、乙酸用量为25 mL/L、温度为80℃时，木质素的去除效果最佳，去除率为14.69%，此时纤维素的含量为89.18%。此方法可以为香蕉副产物的综合利用提供参考。

Abstract: In this study, the optimal process of removing hemicellulose and lignin from banana peel was investigated.Based on single-factor experiment of time, temperature and remover amount, the optimal conditions of hemicellulose and lignin removal process were optimized by orthogonal experimental design.The results indicated that the optimal conditions were as follows:the volume fraction of NaOH 3%, 45 min, 60℃, and under this condition, hemicellulose removal effect was best, the remove ratio was 25.56%.Additionally, when NaClO amount was 20 g/L, acetic acid amount was 25 mL/L, temperature was 80℃, the lignin removal effect was best, the removal ratio was 14.69%, and the content of cellulose was 89.18%.This method can provide a reference for the comprehensive utilization of banana by-products.