苏云金杆菌对淀粉塑料降解的促进作用研究

Studies on Promotion of BT to Degradation of Starch in starch-PE Films

苏云金杆菌Bt-1菌粉、玉米淀粉与LLDPE共混制得淀粉塑料，通过地埋降解和摇床快速降解实验，结果发现地埋降解120天后含5％菌粉和50％淀粉的薄膜淀粉降解率达到89．52％，肉眼观察出现许多小孔，表明添加的Bt－1菌粉对淀粉降解有明显的促进作用．

Bt-1.corn starch and LLDPE was blended to produce diffenent degradable films.Buried 120 days in soiIs,the degradation rate of starch in the films has been investigated.The rate in the film which coctains Bt-10.5% and starch 50% is 89.52%.The result indicatal,Bt-1 has greatly promoted the degradation of starch in the films.