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(A) Activity recovery (%) and laccase loading (mg/g) of HNTs-M-chitosan (0.25%), HNTs-M-chitosan (0.5%), HNTs-M-chitosan (1%) and HNTs-M-chitosan (2%); and (B) 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) oxidation spectra of blank (only ABTS), oxidized ABTS after 5 min by free laccase, and oxidized ABTS after 5 min by HNTs-M-chitosan (1%) at pH 4, temperature 25 °C.
