A Comparative Study of the Extracts’ Effect of Two Types of Tea Plant on Three Types of Bacteria - Isolated from Diarrhea

Abstract

In this study, the five dilutions of alcoholic and water extracts of Thea sinesis and  Hibisus sabdoriffa were prepared then the inhibitory effect of all extracts of the plants used in the study have also been studied on three of gram negative bacteria isolated from diarrhea. The conclusions have shown that the alcoholic extract from both plants has a higher effect in all microbes compound to the water extract. The alcoholic and water extract of the Hibiscus sabdariffa has a higher inhibitory effect from that of Thea sinesis. The minimum inhibitory concentration (M. I. C.) has also been identified in this study for the alcoholic and aqueous extract of the plant related to the study. The identification of this concentration was different according to the type of the extract and the microbe.