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Table 7 Spearman’s correlation between the characteristic peaks of each CER sample and its antioxidant capacities

From: Chemical compositions, chromatographic fingerprints and antioxidant activities of Citri Exocarpium Rubrum (Juhong)

Peak no. Correlation coefficient
DPPH free radical scavenging capacity Ferric reducing capacity ABTS radical scavenging capacity
Peak 01 −0.575 0.446 −0.760**
Peak 02 −0.290 0.174 −0.406
Peak 03 0.152 −0.224 0.697**
Peak 04 −0.055 0.079 0.709**
Peak 05 0.138 0.450 −0.510
Peak 06 −0.307 0.533 −0.792**
Peak 07 −0.252 0.511 −0.743
Peak 08 0.527 −0.042 0.952**
Peak 09 −0.115 0.394 0.612
Peak 10 + 11 0.503 −0.030 0.976**
Peak 12 −0.018 0.395 0.638*
Peak 13 0.503 −0.030 0.976**
Peak 14 0.915**
Peak 15 −0.418 0.697 −0.709*
Peak 16 0.503 −0.030 0.976**
Peak 17 0.550 −0.306 0.932**
  1. P < 0.05
  2. ** P < 0.01