Table 1: Toxicity of Leaf Extracts at Different Concentrations

Viability1 (% of Control) Cell Number2 (% of Control) Concentration (µg/ml) Extract Type Plant
99.9±3.09 102.5±0.36 10 Ethanol C. fragrans
98.8±3.01 100.2±1.21 100
97.1±3.07 100.6±0.46 500
72.6±4.90 65.3±3.81 1000
33.9±2.98 34.3±3.18 1500
101.8±3.55 101.1±2.45 10 Aquatic
101.5±3.48 101.1±1.78 100
100.7±3.45 100.2±2.36 500
100.8±2.78 100.7±2.61 1000
53.3±3.25 54.3±2.28 1500
99.5±2.09 96.0±0.81 10 Ethanol S. chinensis
98.7±3.13 98.3±2.63 100
33.6±1.27 36.9±1.27 500
102.6±4.56 101.1±2.15 10 Aquatic
101.2±3.78 100.5±2.98 50
43.6±3.45 46.8±2.17 100

1 Average of 3 cultures ± SD. Viability of cells was evaluated by MTT assay after 4 days of treatment with the plant extract.
2 Average of 3 cultures ± SD, after 4 days of treatment.