10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 1 2015 (January - March) The present study was conducted to evaluate the antimutagenic properties of aqueous extract of peels of tubers of lessThan i greaterThan Chlorophytum borivilianum lessThan /i greaterThan which are normally considered as wastes. The antimutagenic activity of an aqueous peel extract was evaluated by employing Ames assay commonly called as plate incorporation assay. Ames assay was conducted in two modes i.e. co-incubation and pre-incubation with and without metabolic activation system (S9) by taking strains of lessThan i greaterThan Salmonella lessThan /i greaterThan lessThan i greaterThan typhimurium lessThan /i greaterThan (TA98 and TA100). The aqueous peels extract showed statistically significant decrease in mutation frequency in both the strains against all the mutagens used in the experiments. RAJINDER KAUR GILL * , SAROJ ARORA AND A.K. THUKRAL Chlorophytum borivilianum, Ames assay, mutations, antimutagens, S9. 836-842