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Abstract
Fourteen Zingiberaceae species, widely used in China for both food and medicine, were selected to evaluate and compare their antioxidant, antimicrobial and cytotoxic activities. Results indicated that seven species displayed high antioxidant activity, while eight species exhibited different degrees of antimicrobial activities (minimum inhibitory concentrations were 2.00–40.00 μg/ml), and six species exhibited cytotoxicity on the SMMC-7721 cells. Alpinia officinarum and Alpinia oxyphylla showed a broader antimicrobial spectrum, while Curcuma phaeocaulis and Zingiber officinale displayed specific inhibition on Escherichia coli. Amomum villosum showed strong radical scavenging capacity. Amomum kravanh and Curcuma longa exhibited significant cytotoxicity. Overall, the antioxidant, antimicrobial and cytotoxic activities of the 14 species showed obvious diversities. It is hoped that, from the results, the biological activity of ginger plants can be used more rationally and effectively in future.
Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.