Lotus leaf was provided by Hangzhou Tongjuntang Co., Ltd. (Hangzhou, Zhejiang, China). It was ground and sieved. The powder with a particle size of 0.150 and 0.420 mm was used for experiments. Silica gel with a particle size of 0.075–0.150 mm was purchased from Qingdao Haiyang Chemical Co., Ltd. (Qingdao, Shandong, China).
Nuciferine was purchased from Shanghai Yuanye Biotechnology Co., Ltd. (Shanghai, China).
HPLC-grade acetonitrile was purchased from Tedia Company Inc (Fairfield, OH, USA). Acetic acid and triethylamine were purchased from Shanghai Aladdin Biochemical Technology Co., Ltd. (Shanghai, China). Analytical ammonia solution,
petroleum ether,
ethyl acetate, and
methanol were purchased from Sinopharm chemical reagent Co., Ltd. (Shanghai, China). Deionized water was prepared by a
Milli-Q water-purification system from Milipore (Bedford, MA, USA).
Ruan Y., Xu J., Chu J., Shi J, & Shi Q. (2022). Processing tactics for low-cost production of pure nuciferine from lotus leaf. Ultrasonics Sonochemistry, 86, 106026.