Table 1. Condition of preparative liquid chromatography system

Instrument	Condition
Column	Hiprep 16/60 Sephacryl S-100 HR column (GE Healthcare Life Sciences, USA)
Mobile phase	5 mM sodium phosphate buffer (0.15 M NaCl, pH 7.0)
Detector (detection)	Waters dual λ absorbance detector W2487 (280 nm)
Flow rate	1 mL / min
Injection volume	3 mL