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Table 5 Pearson’s correlations between the IC50 values for fluorescent AGEs, α-amylase, α-glucosidase and ACE versus total phenolic, flavonoids contents and antioxidant activities of tested Australian medicinal plant extracts

From: In vitro inhibitory activities of selected Australian medicinal plant extracts against protein glycation, angiotensin converting enzyme (ACE) and digestive enzymes linked to type II diabetes

Assays (IC50) Pearson’s correlations (r2)
  Total phenolics Total flavonoids FRAP DPPH
α-amylase inhibition −0.3905 −0.1191 −0.2948 −0.1758
α-glucosidase inhibition −0.3018 −0.1167 −0.3227 −0.3054
Fluorescent AGE inhibition −0.1594 −0.3205 −0.2393 −0.3460
ACE inhibition −0.7749b −0.2460 −0.8451b −0.5101a
  1. a, b indicate significance at p < 0.05 and p < 0.001 respectively
  2. FRAP ferric reducing antioxidant potential, DPPH 1,1-diphenyl-2-picrylhydrazyl, AGE advanced glycation endproducts, ACE Angiotensin converting enzyme