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Table 4 Experimental concentration values (ng/mL) obtained for intra-day precision (n = 6) and inter-day precision (n = 18) in UFLC-MS/MS analysis for the nigh compounds in the extract solution of samples

From: Analysis of nine compounds from Alpinia oxyphyllafruit at different harvest time using UFLC-MS/MS and an extraction method optimized by orthogonal design

Compounds

Precision RSD (%)

Repeatability (RSD, %, n = 6)

Stability (RSD, %, n = 6)

Recovery (%, n = 3)

Intraday (n = 6)

Interday (n = 6)

Mean

RSD

Nootkatone

2.37

1.71

3.81

3.74

104.82

3.52

Yakuchinone A

3.32

4.81

3.56

5.11

104.13

4.69

Yakuchinone B

2.77

3.39

2.90

3.79

95.97

3.79

Oxyphyllacinol

4.01

2.49

3.60

2.43

103.14

4.00

Tectochrysin

1.61

2.86

2.51

4.78

105.09

3.70

Izalpinin

1.61

3.13

2.36

3.36

103.56

5.63

Chrysin

1.93

3.64

3.02

4.41

98.87

3.66

Kaempferide

2.29

2.67

3.40

2.20

101.62

3.70

Apigenin-7,4-dimethylether

4.36

3.91

4.98

3.92

95.07

1.69