Table 1 Summary of the coefficients of determination (r 2 ) describing the linear relationships between the levels of antioxidants and antioxidant enzymes with markers of bioprotective capacity.

From: Electropriming of wheatgrass seeds using pulsed electric fields enhances antioxidant metabolism and the bioprotective capacity of wheatgrass shoots

Parameters

Antioxidant activity markers

Chemical marker 1

Biological markers 2

DPPH scavenging capacity

MTT cell viability

LDH membrane release

Antioxidants

 Glutathione

0.0194

0.3324

0.3027

 Vitamin C

0.0006

0.0056

0.0178

 Total phenolics

0.0191

0.0209

0.0457

Antioxidant enzymes

 SOD

0.0271

0.3032

0.3201

 CAT

0.0031

0.2642

0.2624

 GPOX

0.0183

0.2933

0.3118

 GR

0.0123

0.3107

0.3010

 APOX

0.0036

0.3060

0.3465

DPPH 3

–

0.0062

0.0114

  1. Data presented as the square of Pearson’s correlation coefficient (r2) for which the correlations among data (n = 192) are statistical significance at p < 0.05. All experimental data (n = 192) were collated and analysed using linear regression (SPSS Statistics software).
  2. 1Based on the DPPH antioxidant activity assay.
  3. 2Based on biomarkers indicating the cellular health and integrity of Caco-2 cells.
  4. 3Linear correlation representing the variation in biomarkers to indicate cellular health and integrity can be explained by DPPH scavenging capacity.
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