大规格原位成型菌丝体生物泡沫的性能  

Properties of large size in situ formed mycelium bio-foam

作　　者：闫薇 于兰芳 史田田 李少博 刘磊 黄茹 张彬 YAN Wei;YU Lanfang;SHI Tiantian;LI Shaobo;LIU Lei;HUANG Ru;ZHANG Bin(Hengshui College of Vocational Technology,Hengshui 053000,China;Sifang College,Shijiazhuang Tiedao University,Shijiazhuang 050000,China;Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]衡水职业技术学院,衡水053000 [2]石家庄铁道大学四方学院,石家庄050000 [3]中国林业科学研究院木材工业研究所,北京100091

出　　处：《林业工程学报》2024年第6期124-132,共9页Journal of Forestry Engineering

基　　金：河北省教育厅科学研究项目(Z2022049)。

摘　　要：菌丝体生物泡沫是绿色、可降解的环保型材料,成型规格和力学性能等是材料应用最基础和最关键的问题。本研究所使用菌种为平菇(Pleurotus ostreatus),设计了5种培养料以及不同孔径网格布增强等措施研究大规格原位成型菌丝体生物泡沫的性能,并讨论了影响其成型质量的关键因素。结果表明,不同培养料生长的菌丝形态不同,菌丝体形成的致密表皮干燥处理之后具有较好的疏水性;不同培养料对成型效率有影响,以桃木碎料为主的培养料最适合平菇菌丝的生长;10目网格布包覆的菌丝体生物泡沫抗弯能力最大,破坏荷载均值为150.42 N,发生破坏时吸收的能量最大,均值为5828.95 J,相比未包覆网格布的菌丝体泡沫,抗弯性能明显提升。在大规格菌丝生物泡沫成型的过程中,其关键影响因素为适宜的成型环境、植物碎料的颗粒度、菌丝体表皮脱模的完整性、控制干燥去活产生的干缩、适宜的接种量等。本研究为菌丝体生物泡沫的进一步研发应用提供了新思路和基础支持,有利于促进菌丝体生物质复合材料的研发和应用。Mycelium bio-foam is an in situ formed material primarily composed by agricultural and forestry residues.It involves the mycelium wrapping around these residues,binding them together into a cohesive whole with a certain strength.The surface is then encapsulated by a waterproof fungal “skin”,and the entire process integrates planting technology used in cultivating edible fungi.Mycelium bio-foam is a green,degradable and environmentally friendly material,which has attracted much attention.Forming specifications and mechanical properties are fundamental and critical considerations in the application of the materials.In this study,five types of substrates and various nylon net mesh reinforcement measures were designed to investigate the properties of in situ formation of large-size mycelium bio-foam,and the key factors affecting its forming quality were discussed.The results indicated that the morphology of mycelium varied depending on the growth medium,and the dense epidermis formed by the mycelium exhibited pronounced hydrophobicity after drying.The forming efficiency was affected by different forming materials.The culture medium based on peach wood fragments was most suitable for the growth of Pleurotus ostreatus.The bending resistance of mycelium bio-foam covered with 10-mesh nylon net was the greatest,the average failure load was 150.42 N,and the absorbed energy when failure occurred was the highest,and the average value was 5 828.95 J.Compared with the mycelium bio-foam without mesh cloth,the bending resistance of mycelium bio-foam was improved significantly.In the process of forming large-size mycelia bio-foam,the critical factors are suitable forming environment,granularity of plant fragments,integrity of mycelia epidermis,control of dry shrinkage generated by drying deactivation,and appropriate inoculation amount.This study provides a new idea and basic support for the further development and application of mycelium bio-foam,which is conducive to the development and application of mycelium biomass compos

关 键 词：菌丝体 生物泡沫 原位成型 抗弯性能 

分 类 号：TS653[轻工技术与工程]