Fig. 1.

Spectroscopic changes of CYGB after plasma treatment. UV–vis spectra of untreated and plasma-treated CYGB in (A.) water, and (B.) tris-buffer, in the 350–600 nm region with the Soret band (417 nm) and β (535 nm) and α (565 nm) bands clearly visible. (C) and (D): CD spectra of untreated and plasma-treated CYGB samples in the 190–250 nm region, depicting the double minima at 208 nm and 222 nm typical for alpha helical structures. (E): Change of the 208/222 nm ratio in function of the treatment time with both used solvents.