水蕨提取物的抗菌作用及其应用研究

Antimicrobial Activity of Ceratopteris brongn Extract and Its Application in Food Fresh Keeping

为了探讨可食野生植物水蕨的消炎防腐性能,利用了水蕨植株和孢子的水溶性及醇溶性粗提取物作抑菌和食品保鲜实验。结果表明:两组提取物对革兰氏阳性和阴性细菌的生长都有一定的抑制作用,而对真菌无明显抑制现象;食品保鲜试验显示:水蕨植株的水提取物和孢子的乙醇提取物能延长肉类熟食和新鲜海鲜的一级保鲜期12h以上,而水蕨植株的乙醇提取物和孢子的水提取物效果一般,说明水蕨植株中的抗菌成分与孢子中的成分可能有所区别。

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 ftrst 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.