生物干燥是处理食物废物(FW)的实用方法。然而,处理期间的微生物生态过程对于提高干燥效率至关重要,没有足够的压力。本研究分析了接种嗜热菌(TB)的FW生物干燥过程中的微生物群落演替和域间生态网络(IDEN)的两个关键时期,以确定TB如何影响FW生物干燥效率。结果表明,TB可以在FW生物干燥中快速定殖,相对丰度最高,为5.13%。接种TB提高了最高温度,FW生物干燥的温度综合指数和水分去除率(55.7°C,219.5°C,和86.11%vs.52.1°C,159.1°C,和56.02%),从而通过改变微生物群落的演替来加速FW生物干燥效率。结构方程模型和IDEN分析表明,结核病接种通过显著且积极地影响细菌群落(b=0.39,p<0.001)和真菌群落(b=0.32,p<0.01),使细菌和真菌群落之间的IDEN复杂化。从而增强细菌和真菌之间的域间相互作用。此外,接种TB显着增加了梯形分类群的相对丰度,包括严格意义梭菌,苍白杆菌,苯杆菌,Microvirga和念珠菌.总之,接种TB能有效提高FW生物干燥,这是一种快速降低高水分FW并从中回收资源的有前途的技术。
Bio-drying is a practical approach for treating food waste (FW). However, microbial ecological processes during treatment are essential for improving the dry efficiency, and have not been stressed enough. This study analyzed the microbial community succession and two critical periods of interdomain ecological networks (IDENs) during FW bio-drying inoculated with
thermophiles (TB), to determine how TB affects FW bio-drying efficiency. The results showed that TB could rapidly colonize in the FW bio-drying, with the highest relative abundance of 5.13%. Inoculating TB increased the maximum temperature, temperature integrated index and moisture removal rate of FW bio-drying (55.7 °C, 219.5 °C, and 86.11% vs. 52.1 °C, 159.1 °C, and 56.02%), thereby accelerating the FW bio-drying efficiency by altering the succession of microbial communities. The structural equation model and IDEN analysis demonstrated that TB inoculation complicated the IDENs between bacterial and fungal communities by significantly and positively affecting bacterial communities (b = 0.39, p < 0.001) and fungal communities (b = 0.32, p < 0.01), thereby enhancing interdomain interactions between bacteria and fungi. Additionally, inoculation TB significantly increased the relative abundance of keystone taxa, including Clostridium sensu stricto, Ochrobactrum, Phenylobacterium, Microvirga and Candida. In conclusion, the inoculation of TB could effectively improve FW bio-drying, which is a promising technology for rapidly reducing FW with high moisture content and recovering resources from it.