将突变菌株GBIBU7发酵所得的粗酶应用于果胶降解、麻类脱胶和植物细胞原生质体制备等领域，并与Serva进口的精制果胶酶进行了比较．实验结果表明，两者在上述实验中都有较好的效果．它们都能使果胶胶体的粘度大大降低：青麻处理后变软，色泽变白，纤维细绒：能制备出很好的原生质体．在果胶降解、麻类脱胶时，进口精酶的作用较优，在制备植物原生质体时，GBIBU7所产粗酶效果更佳． The crude enzyme obtained from the fermentation of GBIBU7 was applied to the degradation of pectin, degumming of bast and protoplast preparation of plant cells, and compared with purified pectinase imported from Serva. The experimental results show that both have good results in the above experiments. They all reduce the viscosity of pectin colorants: Softwood processed to soften, whiten in color and finely tufted in fiber: Good protoplasts can be prepared. In pectin degradation, degumming, the role of imported refined enzyme better, in the preparation of plant protoplasts, GBIBU7 crude enzyme produced better.