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. 2013 Nov 28;5(12):4894–4907. doi: 10.3390/nu5124894

Table 3.

Correlation coefficients (R2) between 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), Ferric reducing antioxidant power (FRAP), and the reducing power of Carthamus tinctorius L. seed extract (CSE).

DPPH ABTS Reducing Power FRAP
DPPH - 0.6139 ** 0.9752 ** 0.9679 **
ABTS 0.6139 ** - 0.7597 ** 0.7782 **
Reducing power 0.9752 ** 0.7597 ** - 0.9995 *
FRAP 0.9679 ** 0.7782 ** 0.9995 * -

* Correlation is significant at p < 0.05; ** Correlation is significant at p < 0.01.