Discriminate shiitake mushroom ( Lentinus edodes) from different origins by lipidomics based on UHPLC-QE HR-AM/MS/MS

Shiitake mushroom ( Lentinus edodes), as a prestigious edible mushroom and one of the most famous medicinal mushrooms, is cultivated in several regions of China. In this study, the total lipids of shiitake mushroom from different origins were characterized by ultra-high-performance liquid chromatography-quadrupole-ExactiveOrbitrap MS/MS (UHPLC-QE Orbitrap/MS/MS). 20 lipid classes and 174 lipid molecular species were determined by non-targeted lipodomics analysis. The multivariate analysis showed that 19 lipids were screened as potential markers for distinguishing shiitake mushroom of different origins, for instance, phosphatidic acid (18:2/18:2) (PA 18:2/18:2) and phosphatidylglycerol (16:0/18:2) (PG 16:0/18:2). And the Partial Least Squares- Discriminant Analysis (PLS-DA) model reconstructed was used to distinguish shiitake mushroom from different regions with a success rate of 100 %. This work comprehensively provided the lipid information of shiitake mushroom and demonstrated the great potential of lipidomics for tracing the authenticity of shiitake mushrooms from different origins.