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Table 6 Insecticidal activity of solvent extracts from Polygonum hydropiper against Tribolium castaneum and Rhyzopertha dominica

From: Chemical profiling, antimicrobial and insecticidal evaluations of Polygonum hydropiper L

Samples/Fractions Total Insects Conc. (μg/ml) Tribolium castraneum killed Percent mortality LC50 μg/ml Rhyzopertha dominica Killed Percent mortality LC50 μg/ml
Crude (Ph.Cr) 30 125 12.00 ± 0.57 40.00*** 255 19.00 ± 0.00 63.33** 25
30 250 14.33 ± 0.66 47.76*** 21.00 ± 1.15 70.00**
30 500 18.33 ± 0.33 61.10** 22. 67 ± 0.88 75.56**
n-Hexane (Ph.Hex) 30 125 12.66 ± 0.33 42.20*** 360 13.00 ± 0.57 43.33*** 190
30 250 15.66 ± 0.66 62.20** 16.66 ± 0.33 55.53***
30 500 18.67 ± 0.33 62.23** 19.00 ± 0.58 63.33**
Ethyl acetate (Ph.EtAc) 30 125 17.66 ± 0.66 58.86*** 80 15.33 ± 0.88 51.10*** 110
30 250 20.00 ± 0.57 66.66** 23.00 ± 1.15 76.66**
30 500 24.00 ± 0.57 80.00* 26.33 ± 0.33 87.76*
Butanol (Ph.Bt) 30 125 21.33 ± 0.33 71.10** 20 19.66 ± 1.88 65.53** 57
30 250 24.00 ± 0.57 80.00* 25.00 ± 1.15 83.33*
30 500 26.67 ± 0.89 88.90* 28.00 ± 0.00 93.33
Chloroform (Ph.Chf) 30 125 4.66 ± 0.88 15.53*** >500 5.00 ± 0.57 16.55*** >500
30 250 6.33 ± 0.33 21.10*** 9.00 ± 1.15 30.00***
30 500 8.67 ± 0.89 28.90*** 11. 67 ± 0.88 38.90***
Aqueous (Ph.Aq) 30 125 14.00 ± 0.00 46.66*** 130 9.66 ± 0.88 32.20*** 300
30 250 21.00 ± 1.15 70.00** 14.00 ± 0.57 46.66***
30 500 23.33 ± 1.21 77.77** 18.33 ± 0.33 61.10**
(Saponins) Ph.Sp 30 125 15.33 ± 0.88 51.10*** 110 21.33 ± 1.20 71.10** 28
30 250 22.00 ± 0.00 73.33** 24.00 ± 0.00 80.00*
30 500 25.00 ± 0.00 83.33* 27.00 ± 0.00 90.00
Positive Control 30 125 24.00 ± 0.00 80.00 15 24.66 ± 0.33 82.20 9
30 250 27.66 ± 0.88 92.20 27.33 ± 0.88 91.10
30 500 30.00 ± 0.00 100.00 30.00 ± 0.00 100.00
Negative Control 30 --- 0 ± 0.00 0 ± 0.00 --- 0 ± 0.00 0 ± 0.00  
  1. Data was represented as mean ± SEM (n = 3) of three independent experimental readings. Positive control: Permethrin. Negative Control: solvents used for dissolution. Values significantly different when compared to standard drug *: 0.05, **: 0.01 and ***: 0.001 at 90% confidence interval