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Table 3 Recoveries of the described method for RA in different parts of P. frutescens

From: Determination of the content of rosmarinic acid by HPLC and analytical comparison of volatile constituents by GC-MS in different parts of Perilla frutescens (L.) Britt

Sample Trial Sample weigh (g) Spiked amount (mg) Cal. conc (mg/L) Cal. total amount (mg) Amount in sample (mg) Cal. spiked amount (mg) Recovery (%)
Perillae Caulis (PCa-01) 1 0.5038 0.1672 12.7781 0.3195 0.1660 0.1535 91.79
2 0.5019 0.1672 12.7081 0.3177 0.1653 0.1524 91.12
3 0.5014 0.1672 12.7228 0.3181 0.1652 0.1529 91.44
Mean 91.45
SD 0.34
RSD (%) 0.37
Perillae Folium (PFo-01) 1 0.5023 0.4703 37.0332 0.9258 0.4600 0.4658 99.05
2 0.5026 0.4703 37.2100 0.9302 0.4603 0.4700 99.93
3 0.5027 0.4703 37.3131 0.9328 0.4604 0.4725 100.46
Mean 99.81
SD 0.71
RSD (%) 0.71
Perillae Fructus (PFr-01) 1 0.5043 1.0090 83.4811 2.0870 1.1388 0.9482 93.98
2 0.5021 1.0090 83.7794 2.0945 1.1338 0.9607 95.21
3 0.5043 1.0090 84.9101 2.1228 1.1388 0.9840 97.52
Mean 95.57
SD 1.80
  RSD (%) 1.88