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. 2018 Apr 21;23(4):973. doi: 10.3390/molecules23040973

Figure 6.

Figure 6

The experimental results of UV-vis-spectra analysis of Fe2+-chelation with kukoamine A and B. (A) kukoamine A; (B) kukoamine B; (C) solution appearances. (①151.0 mmol/L Fe2+; ② 0.2 mmol/L kukoamine A; ③ reaction mixture of 151.0 mmol/L Fe2+ with 0.2 mmol/L kukoamine A for 0 min; ④ reaction mixture of 151.0 mmol/L Fe2+ with 0.2 mmol/L kukoamine A for 30 min; ⑤ reaction mixture of 151.0 mmol/L Fe2+ with 0.2 mmol/L kukoamine A for 60 min; ⑥ 0.2 mmol/L kukoamine B; ⑦ reaction mixture of 151.0 mmol/L Fe2+ with 0.2 mmol/L kukoamine B for 0 min; ⑧ reaction mixture of 151.0 mmol/L Fe2+ with 0.2 mmol/L kukoamine B for 30 min; ⑨ reaction mixture of 151.0 mmol/L Fe2+ with 0.2 mmol/L kukoamine B for 60 min).