关键词: CCCSNs, 木腐菌, 白腐菌, 褐腐菌, 木质素, 纤维素

Abstract: Wood/bamboo preservation technology is important for extending the outdoor timber life and wood application. Exploitation of energy\|saving and environment protective materials and technology are the key issues for the wood/bamboo preservation. A new type of carbon\|copper core\|shell nanoparticles （CCCSNs）， of which Cu are homogeneously embedded in carbon black as a composite material， was regarded as an environment\|friendly material. This paper investigated the effects of CCCSNs on antimicrobial activity of wood rotting fungi， and the activities of ligninolytic enzyme secreted by white rot fungi and cellulose secreted by brown rot fungi under CCCSNs treatments. We used PDA solid medium added with seven different mass concentrations of CCCSNs and calculated the antibacterial rate of four experimental strains. Moreover， we also detected activities of lignin peroxidase， laccase， manganese peroxidase and cellulose in nitrogen\|unlimited and nitrogen\|limited medium added with different mass concentrations of CCCSNs. The results showed that， when the concentration of CCCSNs was over or equal to 030 g·L-1， the growth of wood rotting fungi was inhibited stably. While the concentration of CCCSNs was 010 g·L-1 or above， it extremely decreased the activities of ligninolytic enzymes of white rot fungi and cellulose of brown rot fungi. All the results showed that CCCSNs can effectively inhibit the growth of wood rotting fungi and induce the degrading enzymes， which was of great value in wood/bamboo preservation technology.

Key words: CCCSNs, wood rotting fungi, brown rot fungi, white rot fungi, lignin, cellulose