关键词: 因子分析, 因子分析, 主成分分析, 质量安全, 支付意愿

Abstract: To investigate and utilize the resource of wood associated fungi and its bioactive compounds, the biological activities of seven wood-rotting fungi were screened. These wood-rotting fungi were grown on the rice solid medium. The ethyl acetate extracts were prepared and thin layer chromatography (TLC)-bioautography-MTT assay, serial dilution method in 96 well plate and TLC-DPPH assay were adopted to evaluate the antibacterial activities and antioxidant activities, respectively. Results showed that, the ethyl acetate extracts of Pleurotus ostreatus specifically inhibited the growth of the Gram-positive bacteria Bacillus subtilis with minimum inhibitory concentration (MIC) value of 4.1 mg/mL, R_f value of 0.85. Meanwhile, the growth of the Gram-negative bacteria Escherichia coli was inhibited only by the ethyl acetate extracts of Fomitopsis pinicola with MIC value of 1.03 mg/mL, R_f value of 0.65. Besides the antibacterial properties, three components of the extracts of F. pinicola also displayed strong DPPH radical scavenging activity. Weaker antioxidant potentials were observed in the single component of the extracts of Piptoporus betulinus, Fomes fomentarius, Trametes suaveolens. Other fungi had negative responses to the DPPH assay. The results will facilitate the utilization and development of the wood-rotting fungi resource.