Although Lilium brownii (L. brownii) bulbs are popular fresh vegetables, a series of quality problems still remain after harvest. In this study, fresh L. brownii bulbs were placed in the dark at 25, 4, and -20 degrees C and under light at 25 degrees C from 0 to 30 days; the chemical compositions were analyzed by ultraviolet spectrophotometry (UV) and high-performance liquid chromatography quadrupole time-of-flight mass spectrometry (HPLC-Q-TOF-MS). During the 30-day storage period, the browning degree increased over the storage time and with increasing temperature, but the contents of proteins...