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Table 4 Accuracy of the HPLC method for the determination of the four flavonoids (1–4)

From: Flavonoids with α-glucosidase inhibitory activities and their contents in the leaves of Morus atropurpurea

Flavonoids Original (mg) Spiked (mg) Found (mg) Recoverya(%) RSDb(%)
   0.13 0.27 97.8 1.99
1 0.14 0.15 0.29 96.0 0.38
0.18 0.32 100.1 2.55
0.11 0.24 102.2 2.06
2 0.13 0.13 0.27 103.5 3.49
0.16 0.29 104.0 5.51
0.07 0.16 104.6 2.56
3 0.08 0.09 0.17 96.1 4.55
0.10 0.19 101.9 0.96
0.04 0.09 97.4 3.62
4 0.05 0.05 0.10 104.6 0.65
0.06 0.11 97.4 3.20
  1. aRecovery (%) = 100 × (amount found - original amount) / amount spiked.
  2. bRSD (%) = 100 × SD / mean.