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Table 4 Recovery test of the five azadirachtins in the neem samples (n = 3)

From: Simultaneous determination of five azadirachtins in the seed and leaf extracts of Azadirachta indica by automated online solid-phase extraction coupled with LC–Q-TOF–MS

Compound

Seed

Leaf

Spiked (µg)

Recovery (%)

RSD (%)

Spiked (µg)

Recovery (%)

RSD (%)

Azadirachtin A

150

99.9

0.04

70

100.9

0.53

300

86.1

3.23

140

87.9

4.59

600

93.5

5.62

280

83.3

0.56

Azadirachtin B

25

93.4

8.11

5

95.9

6.19

50

87.8

2.79

10

98.9

3.40

100

83.1

1.38

20

93.4

1.89

Azadirachtin D

14

85.6

3.39

0.7

93.8

7.03

28

91.9

3.81

1.4

95.7

1.06

56

97.2

1.02

2.8

83.9

3.71

Azadirachtin H

10

90.4

4.73

2

102.8

6.83

20

82.0

3.25

4

92.1

2.26

40

83.4

1.80

8

88.2

1.34

Azadirachtin I

4.5

102.8

3.60

1.25

99.5

3.35

9

90.6

3.27

2.5

95.9

2.55

18

94.0

3.93

5

85.7

1.43