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Spectrophotometric quantification of antibiotics. Standard curves (A,C,E) obtained by measuring the absorbance at 198 nm, 230 nm and Ninhydrin assay of defined concentrations of clindamycin, vancomycin and gentamicin in 0.9% NaCl solution, respectively. Analysis of the release solutions (B,D,F) obtained from antibiotic loaded and unloaded (control) ALG-MC scaffolds, using the respective method (n = 5).
