1.华南农业大学材料与能源学院，广东广州 510642
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林晓莉,周海洋,高振忠等.蓝变木材基底可可球二孢菌丝复合材料的性能[J].木材科学与技术,2023,37(01):61-67.
LIN Xiaoli,ZHOU Haiyang,GAO Zhenzhong,et al.Properties of Mycelium Composite Made of Lasiodiplodia theobromae and Blue-Stained Wood Substrate[J].Chinese Journal of Wood Science and Technology,2023,37(01):61-67.
为了提高易蓝变木材的利用率，利用蓝变菌可可球二孢（,Lasiodiplodia theobromae,）和蓝变的欧洲赤松（,Pinus sylvestris,）、橡胶木（,Hevea brasiliensis,）碎料以及两者混合物制成的基底制备菌丝复合材料，并探讨含水率变化对菌丝复合材料性能的影响。结果表明：培养14 d后，三种基底表面均被菌丝覆盖，颜色显著变黑。增加板坯含水率促进了菌丝复合材料内发生木质素再聚合和美拉德反应，提高了菌丝复合材料的弯曲强度。蓝变欧洲赤松基底、蓝变橡胶木基底以及混合基底菌丝复合材料的弯曲强度分别提高了64%、221%和74%。与蓝变欧洲赤松基底相比，蓝变橡胶木基底更适合可可球二孢菌丝的生长，因此橡胶木基菌丝复合材料的弯曲强度更高，可以达到ANSI A208.1-2016“,Particleboard,”对轻质刨花板的弯曲强度要求。菌丝表面的疏水蛋白使材料表面接触角增大，疏水性增加，而板坯含水率的提高对材料的疏水性和耐水性有削弱作用。
In order to improve the utilization rate of blue stain wood, composite materials were developed by using the blue stain fungus ,Lasiodiplodia theobromae, and blue-stained wood shavings (Scots pine, rubberwood, and a mixture of both). The effect of the moisture content on the properties of mycelium composites was discussed. The results showed that after 14 days of culture, the surface of the substrates was covered by mycelia, and their colors turned black significantly. The increase in the moisture content of the mat promoted lignin repolymerization and Maillard reaction in the composites, improving the bending strength of the mycelium composites. The bending strengths of the mycelium composites with Scots pine substrate, rubberwood substrate, and mixed substrate were increased by 64%, 221%, and 74% respectively. Compared with the Scots pine, rubberwood was more suitable for the growth of ,Lasiodiplodia theobromae, and therefore the rubberwood-based mycelium composite showed higher bending strength compared with Scots pine-based mycelium composite. Rubberwood-based substrate mycelium composite meets the strength requirements for low density particleboard (ANSI A208.1-2016 ,Particleboard,). The hydrophobic protein on the surface of the mycelium increased the contact angle and hydrophobicity of the material, but the increase in the moisture content of the mat weakened the hydrophobicity and water resistance of the material. This study provided a new idea for the use of blue-stained wood.
可可球二孢蓝变木材菌丝复合材料弯曲强度
Lasiodiplodia theobromaeblue-stained woodmycelium compositebending strength
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