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Effect of red or blue LED light on the photo-destruction of all-trans βC. All-trans βC was dissolved in chloroform to a final concentration of 2.4 μM and vials were thoroughly flushed with either nitrogen or air, sealed and incubated for 24 h at 25 °C under different LED lights at 200 µmol m−2 s−1. (a) Red light under nitrogen; (b) Red light in air; (c) Blue light in air.
