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Absorption spectra of quercetin in aqueous pH 5.5 (a) and buffered solutions at pH 7.0 (b) and 9.0 (c) alone and in the presence of increasing amount of SB3-14 up to 1 × 10−3 M. Inset: variation of the absorbance of quercetin upon SB3-14 concentration at specific wavelengths.
