光催化剂CNTs/BiOI复合材料处理对匍枝根霉生长的影响

Impact of the photocatalyst CNTs/BiOI composite on the growth of Rhizopus stolonifer

采取不同质量浓度的光催化剂CNTs/BiOI复合体对匍枝根霉进行两种不同方式的处理,研究光催化剂CNTs/BiOI复合体对匍枝根霉生长的影响.方法一:将匍枝根霉孢子悬液接种到含有光催化剂CNTs/BiOI复合体的固体培养基上,光照处理后观察抑菌效果;方法二:将光催化剂CNTs/BiOI复合体加入匍枝根霉孢子悬液里,光照处理后接种到固体培养基(不含光催化剂)上,再观察抑菌效果.实验结果表明:光催化剂CNTs/BiOI复合体对匍枝根霉有明显的抑制作用,并且抑菌效果随光催化剂浓度增加而增强.质量浓度为0.25g/100mL的光催化剂CNTs/BiOI复合体对匍枝根霉的抑制效果最好,匍枝根霉孢子萌发速度和数量受到显著的抑制作用,孢子囊显著变小,菌丝生长速度缓慢.光催化剂CNTs/BiOI复合体处理匍枝根霉的方式不同其效果也不同,其中将光催化剂CNTs/BiOI复合体加入匍枝根霉孢子悬液里光照处理的抑菌效果较好.

The experiment researched the effect of photocatalyst CNTs/BiOI complex on Rhizopus stolonifer,which was treatment with different mass concentrations of CNTs/BiOI complex in two different ways.Method One:light treatment was made after the photocatalyst CNTs/BiOI complex was added into the medium,which had been inoculated Rhizopus stolonifer;Method two:light treatment was made directly on Rhizopus stolonifer spore suspension,which included photocatalyst CNTs/BiOI composite,before the spore suspension were inoculated on the solid medium.The results showed that the photocatalyst CNTs/BiOI complex on Rhizopus stolonifer have significant inhibitory effect,and the inhibitory effect was enhanced with the increase of the concentration of the photocatalyst.In this experiment,the concentration of 0.25 g/100 mL photocatalyst CNTs/BiOI complex had the serious inhibition,and the germination rate and number of Rhizopus stolonifer spore was significantly inhibited,the sporangias was small,the mycelial growthed slowly.The photocatalyst CNTs/BiOI complex have different inhibitory effect in different stress ways on Rhizopus stolonifer.The second method by adding photocatalyst CNTs/BiOI composite into Rhizopus stolonifer spore suspension is better than another.