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. 2017 Oct 18;22(10):1757. doi: 10.3390/molecules22101757

Figure 2.

Figure 2

Absorption spectra of a solution of (a) 25 μM genistein and 25 µM CuSO4, and the superposition spectra S(Gen) + S(Cu(II)) of 25 µM genistein and 25 µM CuSO4 in water with 1% ethanol solution; and (b) 20 µM daidzein and 20 µM CuSO4, and the superposition spectra S(Daid) + S(Cu(II)) of 20 µM daidzein and 20 µM CuSO4 in methanol/chloroform (7/3, v/v).