. 2016 Sep 27;21(10):1292. doi: 10.3390/molecules21101292

Table 4.

Correlation coefficient (r) between phenolic compositions of mature, immature, and steamed immature wheat bran and antioxidant capacity or cellular antioxidant activity or cell growth inhibition or apoptotic cell death.

Phenolic Compositions		ORAC	CAA	Cell Growth Inhibition			Apoptotic Cell Death
Phenolic Compositions		ORAC	CAA	Caco-2	HT-29	HeLa	Apoptotic Cell Death
Ferulic acid	Free	−0.170	–0.477	−0.352	−0.191	−0.689 *	−0.278
Ferulic acid	Bound	0.815 **	0.988 ***	0.939 ***	0.863 ***	0.975 ***	0.882 ***
Sinapic acid	Free	0.645	0.914 ***	0.829 **	0.786 *	0.927 ***	0.828 ***
Sinapic acid	Bound	−0.685 *	−0.530	−0.615	−0.468	−0.356	−0.305
Vanillic acid	Free	0.397	0.054	0.201	0.188	−0.210	0.103
Vanillic acid	Bound	−0.428	−0.689 *	−0.581	−0.402	−0.833 ***	−0.471
p-Coumaric acid	Free	0.823 **	0.961 ***	0.933 ***	0.748 *	0.933 ***	0.795 ***
p-Coumaric acid	Bound	0.779 *	0.950 ***	0.954 ***	0.918 ***	0.912 ***	0.966 ***
Syringic acid	Free	0.460	0.211	0.297	0.390	−0.085	0.269
Syringic acid	Bound	−0.716 *	−0.871 **	−0.768 *	−0.637	−0.906 ***	−0.619
Syringaldehyde	Free	0.713 *	0.940 ***	0.880 **	0.749 *	0.989 ***	0.812 ***
Syringaldehyde	Bound	0.781 *	0.961 ***	0.960 ***	0.856 **	0.956 ***	0.890 ***
Caffeic acid	Free	−0.301	−0.488	−0.481	−0.235	−0.675 *	−0.366
Caffeic acid	Bound	0.405	0.562	0.446	0.274	0.676 *	0.261

Caco-2, HT-29, and HeLa cells represent relative inhibition % of cell growth for Caco-2, HT-29, and HeLa cells, which were treated with 20 mg/mL of wheat bran extracts. Values in bold with *, ** and *** are different from 0 with significance level at p < 0.05, p < 0.01 and p < 0.001, respectively.