Antibacterial Test of Teki Grass Extract (Cyperus Rotundus) in Inhibiting Escherichia Coli and Salmonella Typhi

This study aims to determine the antibacterial ability of Cyperus rotundus extract in inhibiting growth Escherichia coli and Salmonella typhi by measuring diameter inhibition zone. research method used a completely randomized design (CRD) LSD test as follow-up with one factor, namely variations concentration C. 20%, 40%, 60%, 80% 100%, distilled water negative control antibiotic chloramphenicol positive control. The results showed that could inhibit largest zone indicated 100% which was 2.33mm smallest found at 1.00 mm. While shown 3, 03mm 1.07 ANOVA tests 95% confidence there difference average each treatment most effective.