基于白腐菌预处理和杀菌剂浸渍联合改性的竹材长效防霉技术研究

[Objective]Protecting bamboo against mold fungi over the long term remains a challenge in anti-mold technology,primarily due to the abundance of nutrients within bamboo cell lumens.[Method]In this study,bamboo stripes were pre-incubated with Trametes versicolor for bioincising treatment,followed by impregnation of the compound biocide consisting of isothiazolinone derivatives and carbamate derivatives(IC).The long-term mold resistance of bamboo in laboratory and outdoor conditions was investigated.[Result]The results showed that treated bamboo exhibited excellent long-term mold resistance in both 20-week laboratory and 3-month outdoor tests,exhibiting anti-mold efficiency of 100%.T.versicolor bioincising process enhanced the biocide penetration into the bamboo,increasing the absorption rate from 73.2%to 114.6%compared to untreated bamboo.Furthermore,the pre-incubation of T.versicolor decreased starch and reducing sugar levels and a slight decrease in bamboo's lignin and cellulose content.These findings suggest that the improved long-term mold resistance is primarily due to the nutrient consumption within the cell lumen and increased absorption of organic biocide facilitated by the T.versicolor bioincising process.[Conclusion]This work provides a green and efficient method to improve the long-term mold resistance of bamboo,thus prolonging the durability of bamboo-based products.