Fig. 2

Evolution of the UV–Vis absorption spectrum of xanthoepocin in water. A The sample was kept in the dark. B The sample was irradiated with blue light (413 nm, 5 J cm−2) perpendicularly to the beam of the UV–Vis spectrophotometer
Evolution of the UV–Vis absorption spectrum of xanthoepocin in water. A The sample was kept in the dark. B The sample was irradiated with blue light (413 nm, 5 J cm−2) perpendicularly to the beam of the UV–Vis spectrophotometer