Abstract:

The water and alcohol extracts of Ceratopteris brongn were obtained from the plant and spore respectively, and then their antimicrobial activity and fresh-keeping ability were investigated in this study. The antimicrobial test showed that both water and alcohol extracts have the inhibitory effect against the growth of Gram positive and negative bacteria, but not on fungi. The food preservation test indicated that the plant-water and spore-ethanol extracts may prolong the preservation period of the cooked-meat and the first grade freshness of seafood without package for more than 12 h, while the plant-ethanol and spore-water extracts do not show any significant effects, which may be due to the different antimicrobial compositions in the plant and spore. Altogether, this study provides scientific basis for the exploitation of Ceratopteris brongn.

Key words: Ceratopteris brongn extract, antimicrobial activity, food preservation, microorganism restrain