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Characterization of G/T. (a) UV-Vis absorbance spectra of the G/T with different contents of tyramine. The concentration of the G/T was at 1% wt/wt. (b) Tyramine content in the G/T using different concentration of EDC. The ratio of gelatin to tyramine was 4/1 (wt/wt) in the reagent solution. * denotes p<0.05.
