Figure 1.
(a) 1H nuclear magnetic resonance (NMR) spectra of methionine and methionine–Ag. (b) 13C NMR spectra of methionine and methionine–Ag. (c) 1H NMR spectra of histidine and histidine–Ag. (d) 13C NMR spectra of histidine and histidine–Ag.
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