Jan 08, 2021 · The analysis was carried out using HPLC (Aijiren Series with a diode array detector; Aijiren Technologies, Santa Clara, CA, USA), with the same column as described above. The mobile phase was composed of 20% acetonitrile and 80% water. Flow rate: 1.5 mL/min. Detection: 254 nm. Injection volume: 50 μl.