制备工艺参数对菌丝体生物质材料性能的影响  

Effects of preparation process parameters on the properties of mycelium biomass materials

作　　者：陈晨伟[1,2,3] 彭柳城 丁榕 黄智健 易静 杨福馨 谢晶[1,2,3] Chen Chenwei;Peng Liucheng;Ding Rong;Huang Zhijian;Yi Jing;Yang Fuxin;Xie Jing(Department of Food Science,Shanghai Ocean University,Shanghai 201306,China;Shanghai Cold Chain Equipment Performance and Energy Saving Professional Technical Service Platform,Shanghai 201306,China;National Experimental Teaching Demonstration Center for Food Science and Engineering(Shanghai Ocean University),Shanghai 201306,China)

机构地区：[1]上海海洋大学食品学院,上海201306 [2]上海冷链设备性能与节能专业技术服务平台,上海201306 [3]国家食品科学与工程实验教学示范中心(上海海洋大学),上海201306

出　　处：《农业工程学报》2022年第22期183-189,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划项目(2018YFD0400701);上海市科委公共服务平台建设项目(19DZ2284000);上海市大学生创新项目(S202110264033)。

摘　　要：为获得菌丝体生物质材料优化性能的最佳工艺参数,该研究以最小缓冲系数和弯曲强度为评定指标,通过3因素3水平正交试验研究了菌种接种量、基质颗粒度和水添加量对平菇菌丝体材料性能的影响。研究结果表明,正交试验9组菌丝体材料中菌丝平均直径最大为1 641 nm,最小为520 nm,前者后者的3.16倍,表明不同工艺参数显著(P<0.05)影响菌丝生长状态。影响菌丝体材料力学性能的最大因素是基质颗粒度,其次是水添加量和接种量。最佳工艺参数为接种量10%、基质颗粒度10 mm和水添加量60%,对应菌丝体材料的最小缓冲系数最低为4.17、弯曲强度最大为417.43 kPa,与发泡聚苯乙烯泡沫的弯曲强度相近。研究结果可为菌丝体材料制备工艺参数与性能的优化提供基础。Biodegradable packaging materials have received widespread attention in recent years. The reason is that non-biodegradable packaging materials have caused serious environmental and human health issues during disposal after mass production. Fortunately, the mycelium material can be expected to serve as one of the promising biodegradable materials. In this study, the mycelium biomass material was cultivated to determine the effect of preparation process parameters on mechanical properties. Pleurotus ostreatus was selected to inoculate in a culture substrate, including the wood chips, cotton seed hulls, corn cobs, wheat bran, lime, and gypsum. The process parameters were then optimized for the properties of mycelium biomass material. After that, a three-factor and the three-level orthogonal test was carried out to investigate the three process parameters(inoculum amounts, particle size of substrate, and water addition) using the minimum cushioning coefficient and bending strength as the evaluation indexes. The maximum and minimum average diameters of mycelium were 1 641 and 520 nm, indicating the significant influence of different process parameters on the growth state of mycelium. The influencing factors were ranked in descending order of the particle size of the substrate, followed by the water addition, and inoculum amount. The bending resistance and buffering effect of mycelium material decreased as the particle size of the substrate decreased, due to the reduced internal space of substrate material. The low growth of mycelium and adherence between the substrates was attributed to the limited deformation space of material for less air circulation. The best bending resistance and buffering efficiency were achieved in the amount of water addition of 60%. As such, the bonding between the substrate inside the material depended mainly on the amount of water addition. The better mechanical properties were obtained in the relatively strong bonding, where the metabolism and growth of mycelium with suitable water was a b

关 键 词：农业废弃物 生物质 资源化 工艺参数 菌丝体材料 弯曲强度 缓冲系数 

分 类 号：S216.2[农业科学—农业机械化工程]