Antimicrobial characteristics of edible medicinal herbs extracts

摘要

To develop a natural food preservatives from medicinal herbs (62 species), antimicrobial test was performed with hot water and ethanol extracts against Escherchia coli, Listeria monocytogens and Candida albicans by paper disk method. And its result as a first screening test, 7 kinds of medicinal herbs were selected, and more precise analysis was conducted at last 3 kinds of medicinal herbs was finally selected. Therminalia chebula Retz and Rhus javanica has a broad antimicrobial spectrums and has alow MIC values. In growth inhibition test, they showed a very strong antimicrobial activity against Listeria monocytogens. If there has a elaborate approaches in its characteristics and properties, some good result must followed in making a powerful natural antimicrobial preservatives.