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Table 3 Protective Efficacy (%) of two formulated mixtures of human-derived semiochemicals and DEET (10% concentration) in arm-in-cage experiments

From: Arm-in-cage testing of natural human-derived mosquito repellents

Time post application (hrs)

DEET

Mixture 1

Mixture 3

Anopheles gambiae

   

0

100 (± 0)a*

100 (± 0)a*

100 (± 0)a*

2

100 (± 0)a*

89.4(± 3.7)a*

98.5 (± 1.51)a*

4

100 (± 0)a*

54.9 (± 4.5)b*

64.3 (± 6.15)b*

6

100 (± 0)a*

32.1 (± 5.6)c*

38.8 (± 4.31)c*

8

94.4 (± 1)b*

12.5 (± 2.1)d

30.8 (± 6.96)c*

Culex quinquefasciatus

   

0

100 (± 0)a*

100 (± 0)a*

100 (± 0)a*

2

100 (± 0)a*

89 (± 4.2)a*

98.6 (± 1.43)a*

4

100 (± 0)a*

56.2 (± 4.4)b*

80 (± 1.7)b*

6

100 (± 0)a*

28.5 (± 5.2)c*

60.9 (± 3.1)c*

8

93.3 (± 4.08)b*

19.8 (± 3.2)c*

45.8 (± 4.1)d*

Aedes aegypti

   

0

100 (± 0)a*

46.5 (± 9.9)a*

60 (± 9.8)a*

1

100 (± 0)a*

46.1 (± 9.9)a*

43.6 (± 9.9)ab*

2

100 (± 0)a*

13.8 (± 6.9)b*

30.9 (± 9.2)bc*

3

100 (± 0)a*

-8.6 (± 5.6)b

21.1 (± 5.6)cd*

4

100 (± 0)a*

17.2 (± 7.6)bc

11.3 (± 6.3)d

5

100 (± 0)a*

10.3 (± 6.09)bc

7.04 (± 5.1)d

6

100 (± 0)a*

-15.5 (± 7.24)c

-16.9 (± 7.2)e

7

97 (± 1.95)b*

1.7 (± 2.6)c

-2.8 (± 2.6)e

8

96.1 (± 1.94)b*

-8.6 (± 5.6)c

-2.9 (± 3.3)e

  1. Mixture 1 = 1:1:1:1:1 6-methyl-5-hepten-2-one:octanal:nonanal:decanal:geranylacetone
  2. Mixture 3 = 1:1 6-methyl-5-hepten-2-one:geranylacetone
  3. Means followed by different letters are significantly different from each other (P < 0.05)
  4. P.E. = protective efficacy (% formulation control mean - % test mean/% formulation control mean)
  5. *Significantly different from the control (formulation-treated arm) (P < 0.05)