Fig. 3From: Exploring the phyto- and physicochemical evaluation, fluorescence characteristics, and antioxidant activities of Acacia ferruginea Dc: an endangered medicinal plantUV–Vis spectrum of A. ferruginea extracts (concentration: 1 mg/mL) before and after adding shift reagent (NaOEt) a mild shift in ACFE-L-E, b redshift from 363 to 432 nm (absorption maxima) in ACFE-L-HE, c longer wavelength shift in ACFE-B-EBack to article page