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Table 3 IC50 value (mg/mL) of antioxidant activity of sweet potato extract

From: Plant-growth regulators alter phytochemical constituents and pharmaceutical quality in Sweet potato (Ipomoea batatas L.)

  DPPH asssay β-carotene bleaching assay
Control 4.2 ± 0.11a 4.5 ± 0.25a
MeJA 2.4 ± 0.20d 2.9 ± 0.15d
SA 3.0 ± 0.27c 3.3 ± 0.21c
ABA 3.4 ± 0.25b 3.7 ± 0.22b
α-tocopherol 1.1 ± 0.18e 1.3 ± 0.12e
  1. Data are means of triplicate measurements ± standard deviation. Means not sharing a common single letter in each column for each measurement were significantly different at P < 0.05