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Table 2 Method validation

From: An improved strategy to analyse strigolactones in complex sample matrices using UHPLC–MS/MS

Compound

Determined spiked content (pmol)a

Method precision (%RSD)a

Method accuracy (%bias)a

Determined spiked content (pmol)b

Method precision (%RSD)b

Method accuracy (%bias)b

Root exudates (20 ml)

 Strigol

1.03 ± 0.03

3.0

3.45

9.71 ± 0.20

2.0

− 2.94

 Solanacol

0.95 ± 0.03

2.7

− 4.90

8.78 ± 0.12

1.3

− 12.21

 Orobanchol

0.93 ± 0.05

4.9

− 6.89

9.42 ± 0.10

1.0

− 5.78

 Sorgomol

1.03 ± 0.05

5.3

2.83

9.28 ± 0.14

1.5

− 7.23

 Sorgolactone

1.03 ± 0.05

5.3

2.83

9.28 ± 0.14

1.5

− 7.23

 4-DO

1.06 ± 0.04

3.7

5.89

9.57 ± 0.24

2.5

− 4.32

 5-DS

1.03 ± 0.04

3.6

2.79

9.39 ± 0.15

1.6

− 6.08

Root tissue (150 mg)

 Strigol

1.07 ± 0.05

4.4

0.67

9.81 ± 0.12

1.2

− 1.91

 Solanacol

1.05 ± 0.04

3.4

0.47

8.72 ± 0.09

1.0

− 12.83

 Orobanchol

1.09 ± 0.04

3.8

0.92

9.72 ± 0.25

2.6

− 2.80

 Sorgomol

1.13 ± 0.14

12.3

1.33

10.12 ± 0.04

0.4

1.18

 Sorgolactone

1.07 ± 0.04

3.3

0.66

9.70 ± 0.15

1.6

− 2.95

 4-DO

1.08 ± 0.01

1.2

0.81

9.78 ± 0.09

0.9

− 2.15

 5-DS

1.05 ± 0.01

0.9

0.46

10.20 ± 0.13

1.2

2.05

  1. The precision and accuracy evaluated by spiking a fixed amount of sorghum root exudate (20 ml) and root tissue (150 mg of fresh weight) with analytes at two different concentrations (a 1 pmol, and b 10 pmol) prior to individual extraction procedures. Values are mean ± SD (n = 4)