Preparation, antioxidant and tyrosinase inhibitory activities of chitosan oligosaccharide-hydroxypyridinone conjugates

[Display omitted] •Two chitosan oligosaccharide (COS)-hydroxypyridone (HPO) conjugates were prepared.•The structure of COS conjugates was confirmed by FT-IR, XRD and NMR spectra.•The thermal stability of COS-HPOs were improved when compared to COS.•The two conjugates possessed enhanced antioxidant a...

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