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. Author manuscript; available in PMC: 2008 Mar 10.
Published in final edited form as: Environ Mol Mutagen. 1997;30(4):468–474. doi: 10.1002/(sici)1098-2280(1997)30:4<468::aid-em12>3.0.co;2-b

Fig. 4.

Fig. 4

Degradation of N-Hydroxy-IQ under aqueous conditions. (a) Time-dependent changes in the absorption spectrum of mutagen alone in 30 mM Tris-HCl buffer, pH 7.4; 25°C, b = 1 cm. The scan was taken at 3-min intervals. (b) Repeat of the experiment in (a) but with the addition of 10 μl of 2.5% (w/v) green tea to both cuvettes; for clarity, only the spectra at 0 min (solid line) and 15 min (dotted line) are shown. (c) Repeat of (a) in the presence of 10 μM CHL.