The effect of inoculation Leuconostoc mesenteroides and Lactiplantibacillus planetarium on the quality of Pleurotus eryngii Jiaosu

To investigate the effects of inoculating Leuconostoc mesenteroides or Lactiplantibacillus planetarium on the changes in metabolites in Pleurotus eryngii Jiaosu, a fermented plant extract rich in nutrients and bioactive compounds, the physicochemical and metabolite features of the treated Jiaosu were compared to those of spontaneously-fermented Jiaosu. The physicochemical features of Jiaosu fermented with Leuconostoc mesenteroides or Lactiplantibacillus planetarium were superior to spontaneously-fermented Jiaosu. An Partial Least Squares Discrimination Analysis (PLS-DA) score plot showed a clear difference in metabolites between spontaneous fermentation group (SFG) and inoculated Lactiplantibacillus planetarium group (LPG). Metabolites were remarkably different between LPG and SFG on the first day of fermentation. The differential metabolites included sugars, acids and alcohols. This study highlights the applicability of GC-MS based metabolomics as a tool to monitor Jiaosu fermentation.