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Table 1 The R (correlation coefficient) values between chemical contents and antioxidant levels (1/IC 50 value)

From: Folium Sennae protects against hydroxyl radical-induced DNA damage via antioxidant mechanism: an in vitro study

  Total phenolics Total sugars Total saponins Total anthraquinones Aloe-emodin Rhein Emodin
Protection against DNA damage 0.769 0.330 −0.589 0.747 0.773 0.753 0.662
•OH scavenging 0.814 0.561 −0.571 0.650 0.326 0.650 0.575
•O2 scavenging 0.865 0.182 0.328 0.743 0.674 0.719 0.664
DPPH• scavenging 0.91 −0.112 0.155 0.997 0.922 0.994 0.983
ABTS+• scavenging 0.918 −0.036 0.158 0.962 0.872 0.958 0.931
Cu2+-reducing 0.784 −0.306 0.56 0.896 0.952 0.884 0.886
Average 0.843 0.103 0.0068 0.833 0.753 0.820 0.784