| abstract |
The present invention provides the plant pigment as an indicator to screen lipase activity. Because the lipid hydrolysis of colony which has lipase activity makes a transparent ring around the colony, and the color of plant pigment can be changed by minute difference of PH value resulted from bacterium metabolism, the plant pigment can be used as an indicator to rapidly screen enzyme activity. The indicator is prepared very easily and has lower price. Comparing other culture media used to screen lipase activity or other methods, the judgment of examined result is more accurate and easier. Therefore, this plant pigment can be a rapid screened tool to regularly screen the biotechnology enzyme activity. |