Table 2

The intra-day precision, stability and reproducibility of the HPLC results for the key compounds in the 12 varieties of sweet cherry

Wavelength (nm), representative compoundVariableVariety
13–33Rock Candy CuiAaron BrooksPleasurable RedRed LightRed HoneyBeautiful RedRainierReigyokuShandong JadeBright PearlTai Zhu
210, malic acid, 2.10–2.26 minPrecision (RSD, %)RRT0.210.540.210.200.230.220.230.350.300.220.220.43
RPA1.262.832.722.201.362.002.112.531.652.822.722.25
Stability (RSD, %)RRT0.170.210.150.160.240.500.150.120.170.150.160.13
RPA0.680.810.660.541.181.040.370.920.841.120.850.54
Reproducibility (RSD, %)RRT0.100.060.020.070.030.040.150.050.070.080.120.05
RPA1.131.031.420.951.041.011.161.120.911.201.050.94
280, catechin, 27.7 minPrecision (RSD, %)RRT0.200.420.350.310.210.300.270.210.210.520.370.21
RPA2.700.612.871.501.790.751.131.581.431.070.592.67
Stability (RSD, %)RRT0.120.120.110.120.440.130.100.240.260.230.300.25
RPA1.211.431.581.020.991.051.290.991.210.940.891.33
Reproducibility (RSD, %)RRT0.070.040.050.070.080.070.100.040.070.030.030.05
RPA1.531.171.381.151.361.551.391.381.231.121.361.02
330, p-coumaroylquinic acid, 28.4 minPrecision (RSD, %)RRT0.250.320.210.220.200.220.230.260.220.260.370.21
RPA1.702.952.861.030.941.031.252.541.660.381.420.63
Stability (RSD, %)RRT0.540.290.110.150.140.150.140.150.290.110.230.38
RPA1.571.461.611.802.391.101.622.041.042.272.241.24
Reproducibility (RSD, %)RRT0.050.090.050.060.070.040.100.040.050.050.030.08
RPA1.271.031.371.181.041.080.920.980.941.461.291.28
370, rutin, 44.3 minPrecision (RSD, %)RRT0.240.210.260.270.280.240.390.230.240.290.310.32
RPA0.600.492.520.971.422.451.721.902.720.722.672.72
Stability (RSD, %)RRT0.130.210.130.270.280.160.100.120.110.290.270.34
RPA1.010.951.451.151.722.311.142.501.682.252.132.14
Reproducibility (RSD, %)RRT0.060.150.070.050.020.140.070.180.030.160.040.07
RPA1.381.160.961.101.090.931.111.590.511.040.950.43
520, cyanidin-3-O-rutinoside, 37.6 minPrecision (RSD, %)RRT0.310.250.210.410.220.380.250.230.220.430.260.25
RPA0.712.802.131.132.751.112.312.012.362.540.480.60
Stability (RSD, %)RRT0.100.160.330.180.140.110.110.120.120.210.130.11
RPA1.952.171.151.311.141.802.102.301.642.170.551.30
Reproducibility (RSD, %)RRT0.060.050.020.060.030.030.090.050.050.060.030.08
RPA1.560.740.951.170.841.290.640.930.611.200.380.31
Wavelength (nm), representative compoundVariableVariety
13–33Rock Candy CuiAaron BrooksPleasurable RedRed LightRed HoneyBeautiful RedRainierReigyokuShandong JadeBright PearlTai Zhu
210, malic acid, 2.10–2.26 minPrecision (RSD, %)RRT0.210.540.210.200.230.220.230.350.300.220.220.43
RPA1.262.832.722.201.362.002.112.531.652.822.722.25
Stability (RSD, %)RRT0.170.210.150.160.240.500.150.120.170.150.160.13
RPA0.680.810.660.541.181.040.370.920.841.120.850.54
Reproducibility (RSD, %)RRT0.100.060.020.070.030.040.150.050.070.080.120.05
RPA1.131.031.420.951.041.011.161.120.911.201.050.94
280, catechin, 27.7 minPrecision (RSD, %)RRT0.200.420.350.310.210.300.270.210.210.520.370.21
RPA2.700.612.871.501.790.751.131.581.431.070.592.67
Stability (RSD, %)RRT0.120.120.110.120.440.130.100.240.260.230.300.25
RPA1.211.431.581.020.991.051.290.991.210.940.891.33
Reproducibility (RSD, %)RRT0.070.040.050.070.080.070.100.040.070.030.030.05
RPA1.531.171.381.151.361.551.391.381.231.121.361.02
330, p-coumaroylquinic acid, 28.4 minPrecision (RSD, %)RRT0.250.320.210.220.200.220.230.260.220.260.370.21
RPA1.702.952.861.030.941.031.252.541.660.381.420.63
Stability (RSD, %)RRT0.540.290.110.150.140.150.140.150.290.110.230.38
RPA1.571.461.611.802.391.101.622.041.042.272.241.24
Reproducibility (RSD, %)RRT0.050.090.050.060.070.040.100.040.050.050.030.08
RPA1.271.031.371.181.041.080.920.980.941.461.291.28
370, rutin, 44.3 minPrecision (RSD, %)RRT0.240.210.260.270.280.240.390.230.240.290.310.32
RPA0.600.492.520.971.422.451.721.902.720.722.672.72
Stability (RSD, %)RRT0.130.210.130.270.280.160.100.120.110.290.270.34
RPA1.010.951.451.151.722.311.142.501.682.252.132.14
Reproducibility (RSD, %)RRT0.060.150.070.050.020.140.070.180.030.160.040.07
RPA1.381.160.961.101.090.931.111.590.511.040.950.43
520, cyanidin-3-O-rutinoside, 37.6 minPrecision (RSD, %)RRT0.310.250.210.410.220.380.250.230.220.430.260.25
RPA0.712.802.131.132.751.112.312.012.362.540.480.60
Stability (RSD, %)RRT0.100.160.330.180.140.110.110.120.120.210.130.11
RPA1.952.171.151.311.141.802.102.301.642.170.551.30
Reproducibility (RSD, %)RRT0.060.050.020.060.030.030.090.050.050.060.030.08
RPA1.560.740.951.170.841.290.640.930.611.200.380.31

RSD, RRT and RPA represent relative standard deviation, relative retention time, and relative peak area, respectively.

Table 2

The intra-day precision, stability and reproducibility of the HPLC results for the key compounds in the 12 varieties of sweet cherry

Wavelength (nm), representative compoundVariableVariety
13–33Rock Candy CuiAaron BrooksPleasurable RedRed LightRed HoneyBeautiful RedRainierReigyokuShandong JadeBright PearlTai Zhu
210, malic acid, 2.10–2.26 minPrecision (RSD, %)RRT0.210.540.210.200.230.220.230.350.300.220.220.43
RPA1.262.832.722.201.362.002.112.531.652.822.722.25
Stability (RSD, %)RRT0.170.210.150.160.240.500.150.120.170.150.160.13
RPA0.680.810.660.541.181.040.370.920.841.120.850.54
Reproducibility (RSD, %)RRT0.100.060.020.070.030.040.150.050.070.080.120.05
RPA1.131.031.420.951.041.011.161.120.911.201.050.94
280, catechin, 27.7 minPrecision (RSD, %)RRT0.200.420.350.310.210.300.270.210.210.520.370.21
RPA2.700.612.871.501.790.751.131.581.431.070.592.67
Stability (RSD, %)RRT0.120.120.110.120.440.130.100.240.260.230.300.25
RPA1.211.431.581.020.991.051.290.991.210.940.891.33
Reproducibility (RSD, %)RRT0.070.040.050.070.080.070.100.040.070.030.030.05
RPA1.531.171.381.151.361.551.391.381.231.121.361.02
330, p-coumaroylquinic acid, 28.4 minPrecision (RSD, %)RRT0.250.320.210.220.200.220.230.260.220.260.370.21
RPA1.702.952.861.030.941.031.252.541.660.381.420.63
Stability (RSD, %)RRT0.540.290.110.150.140.150.140.150.290.110.230.38
RPA1.571.461.611.802.391.101.622.041.042.272.241.24
Reproducibility (RSD, %)RRT0.050.090.050.060.070.040.100.040.050.050.030.08
RPA1.271.031.371.181.041.080.920.980.941.461.291.28
370, rutin, 44.3 minPrecision (RSD, %)RRT0.240.210.260.270.280.240.390.230.240.290.310.32
RPA0.600.492.520.971.422.451.721.902.720.722.672.72
Stability (RSD, %)RRT0.130.210.130.270.280.160.100.120.110.290.270.34
RPA1.010.951.451.151.722.311.142.501.682.252.132.14
Reproducibility (RSD, %)RRT0.060.150.070.050.020.140.070.180.030.160.040.07
RPA1.381.160.961.101.090.931.111.590.511.040.950.43
520, cyanidin-3-O-rutinoside, 37.6 minPrecision (RSD, %)RRT0.310.250.210.410.220.380.250.230.220.430.260.25
RPA0.712.802.131.132.751.112.312.012.362.540.480.60
Stability (RSD, %)RRT0.100.160.330.180.140.110.110.120.120.210.130.11
RPA1.952.171.151.311.141.802.102.301.642.170.551.30
Reproducibility (RSD, %)RRT0.060.050.020.060.030.030.090.050.050.060.030.08
RPA1.560.740.951.170.841.290.640.930.611.200.380.31
Wavelength (nm), representative compoundVariableVariety
13–33Rock Candy CuiAaron BrooksPleasurable RedRed LightRed HoneyBeautiful RedRainierReigyokuShandong JadeBright PearlTai Zhu
210, malic acid, 2.10–2.26 minPrecision (RSD, %)RRT0.210.540.210.200.230.220.230.350.300.220.220.43
RPA1.262.832.722.201.362.002.112.531.652.822.722.25
Stability (RSD, %)RRT0.170.210.150.160.240.500.150.120.170.150.160.13
RPA0.680.810.660.541.181.040.370.920.841.120.850.54
Reproducibility (RSD, %)RRT0.100.060.020.070.030.040.150.050.070.080.120.05
RPA1.131.031.420.951.041.011.161.120.911.201.050.94
280, catechin, 27.7 minPrecision (RSD, %)RRT0.200.420.350.310.210.300.270.210.210.520.370.21
RPA2.700.612.871.501.790.751.131.581.431.070.592.67
Stability (RSD, %)RRT0.120.120.110.120.440.130.100.240.260.230.300.25
RPA1.211.431.581.020.991.051.290.991.210.940.891.33
Reproducibility (RSD, %)RRT0.070.040.050.070.080.070.100.040.070.030.030.05
RPA1.531.171.381.151.361.551.391.381.231.121.361.02
330, p-coumaroylquinic acid, 28.4 minPrecision (RSD, %)RRT0.250.320.210.220.200.220.230.260.220.260.370.21
RPA1.702.952.861.030.941.031.252.541.660.381.420.63
Stability (RSD, %)RRT0.540.290.110.150.140.150.140.150.290.110.230.38
RPA1.571.461.611.802.391.101.622.041.042.272.241.24
Reproducibility (RSD, %)RRT0.050.090.050.060.070.040.100.040.050.050.030.08
RPA1.271.031.371.181.041.080.920.980.941.461.291.28
370, rutin, 44.3 minPrecision (RSD, %)RRT0.240.210.260.270.280.240.390.230.240.290.310.32
RPA0.600.492.520.971.422.451.721.902.720.722.672.72
Stability (RSD, %)RRT0.130.210.130.270.280.160.100.120.110.290.270.34
RPA1.010.951.451.151.722.311.142.501.682.252.132.14
Reproducibility (RSD, %)RRT0.060.150.070.050.020.140.070.180.030.160.040.07
RPA1.381.160.961.101.090.931.111.590.511.040.950.43
520, cyanidin-3-O-rutinoside, 37.6 minPrecision (RSD, %)RRT0.310.250.210.410.220.380.250.230.220.430.260.25
RPA0.712.802.131.132.751.112.312.012.362.540.480.60
Stability (RSD, %)RRT0.100.160.330.180.140.110.110.120.120.210.130.11
RPA1.952.171.151.311.141.802.102.301.642.170.551.30
Reproducibility (RSD, %)RRT0.060.050.020.060.030.030.090.050.050.060.030.08
RPA1.560.740.951.170.841.290.640.930.611.200.380.31

RSD, RRT and RPA represent relative standard deviation, relative retention time, and relative peak area, respectively.

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