苎麻微生物脱胶菌株的最佳脱胶条件

从保存的苎麻微生物脱胶菌株中筛选出脱胶效果最好的菌株8-1，以培养时间、培养温度、菌液量体积比、转速做4因素3水平正交试验，研究其最佳脱胶条件。实验结果表明，影响因素最大的是培养时间，其次是培养温度与菌液量体积比，转速影响最小。该菌株的最佳脱胶条件为：4d、39℃、菌液量体积比1：40、静置培养。该条件下苎麻胶质去除率达到25.94％。对菌株8-1脱胶后的苎麻单纤维进行力学性能测试和表面观察，结果表明，经微生物脱胶得到的苎麻单纤维强力比经化学脱胶后的单纤维提高43.45％，且纤维表面更光滑，损伤更小。

Optimal degumming conditions of strains for microbial degumming of ramie

The best degumming 8-1 strain was selected from the collected microbial degumming of ramie. We did 4 factors (culture temperature, culture time, volume ratio of bacterium fluid, rotate speed) 3 levels orthogonal test to study the best degumming conditions. The results show that culture time is the greatest influence, culture temperature and volume ratio of bacterium fluid is followed, rotate speed is the weakest influence. The best degumming conditions of 8-1 strain are 4d, temperature 39 ℃, volume ratio of bacterium fluid 1:40 and static placed. With these conditions, the average weight loss can reach 25.94％. Furthermore, we took the ramie fibers degummed by 8-1 strain to do the mechanics performance test and the surface observation. The results shows that when compared with chemical degumming, 8-1 strain increase the average value of single fiber strength of the degummed ramie by 43.45％ and the fiber’s surface is more smooth and less damaged.