Purification of Anthocyanins Derived from Black Kidney Bean (Phaseolus vulgaris L.) by a Simulated Moving Bed

Table 2

SMB operating conditions and test results.

No.	Adsorption zone flow rate (mL/min)	Refined zone flow rate (mL/min)	Desorbing zone flow rate (mL/min)	Regenerative zone flow rate (mL/min)	Water washing zone flow rate (mL/min)	Switching time (s)	Purity (%)	Yield (%)
1	11.0	27.5	23.5	23.5	32.0	1260	23.22 ± 0.15^c	80.61 ± 0.22^d
2	11.0	24.5	23.5	26.5	32.0	1260	24.34 ± 0.18^a	84.92 ± 0.26^c
3	12.5	29.5	24.5	22.0	37.5	1260	20.28 ± 0.12^f	79.84 ± 0.19^e
4	12.5	28.5	24.5	22.5	38.5	1080	24.61 ± 0.21a	87.85 ± 0.32^b
5	14.5	36.5	24.5	28.5	42.0	1080	22.19 ± 0.11^d	79.62 ± 0.28^e
6	14.5	38.5	26.5	26.0	42.5	1080	21.32 ± 0.09^e	90.91 ± 0.36^a
7	16.0	42.5	30.0	29.5	45.5	1080	23.78 ± 0.14^b	88.36 ± 0.35^b

Letters a–f indicate intergroup differences ().