In vitro evaluation of chitosan-coated liposome containing both coenzyme Q10 and alpha-lipoic acid: Cytotoxicity, antioxidant activity, and antimicrobial activity

BackgroundChitosan-coated liposome containing both coenzyme Q10 and alpha-lipoic acid (CCAL) was a novel multifunctional nano delivery system exhibited long-term stability at room temperature and high encapsulation efficiency. Which containing two kinds of antioxidants (coenzyme Q10 and alpha-lipoic acid) and two antibacterial agents (chitosan and alpha-lipoic acid). However, the further biocompatibility, such as cytotoxicity and antioxidant activity, and antimicrobial activity of CCAL, has not been systematically evaluated. ObjectivesThis study aims to evaluate the cytotoxicity, antioxidant activity and antimicrobial activity of CCAL. MethodsThis article evaluated the in vitro cytotoxicity and antioxidant activity of CCAL by CCK8 assay, and antimicrobial activity on Staphylococcus aureus and Escherichia coli was investigated. ResultsFor antioxidant activity study, CCAL displayed significant antioxidant effect when compared with control group (P<.01). Finally, CCAL also exhibited antimicrobial activity, and CCAL showed stronger bactericidal effect with Gram-positive bacteria than Gram-negative bacteria. ConclusionsCCAL could be a potential antioxidant delivery system for cosmetics or pharmaceuticals without cytotoxicity and artificial preservatives free.