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Table 1 Total phenolic content (TPC) and α-glucosidase inhibitory activity of different EtOH:water (E:W) systems of C. caudatus

From: Variation in the metabolites and α-glucosidase inhibitory activity of Cosmos caudatus at different growth stages

E:W system TPC (g GAE g DW− 1) α-glucosidase inhibitory activity, IC50 (μg mL− 1)
100:0 0.80 ± 0.11a 69.88 ± 7.22a
80:20 0.79 ± 0.09a 39.18 ± 5.80b
60:40 0.26 ± 0.08b 113.56 ± 6.72c
40:60 0.18 ± 0.13b nd
20:80 0.09 ± 0.03b nd
0:100 0.24 ± 0.11b nd
Quercetin nd 110.50 ± 4.30c
  1. Different letters in the column indicate significant differences (p < 0.05) using Duncan’s test. Values are expressed as the mean ± standard deviation (n = 3). nd not detected