Table 2.

Phenolic, flavonoid content, and antioxidant activities of date pits (Means ± SE; n = 3).

Parameters	Non-degraded date pits, %	Degraded date pits,%
Total phenol, g GAE/100 g DWa	3.21 ± 0.712	14.2 ± 1.29*
Flavonoids, RE/100 g DWb	2.28 ± 0.850	11.7 ± 2.21*
DPPH activity, %c	59 ± 9.2	78 ± 11.9*
ABTS, mmol TE/100 g DW3d	6.23 ± 0.361	13.3 ± 1.89*
FRAP, mmol TE/100 g DWd	24.6 ± 4.58	36.2 ± 6.39*
Metal chelating activity, μmol EE /g DWe	13.3 ± 0.221	17.3 ± 2.681

SE, standard error.

^*P < 0.05.

^amg GAE/100 g DW, mg Gallic acid equivalent per 100 g dry weight of date pits;

^bRE/100 g DW, Rutin equivalents per 100 g dry weight of date pits;

^cDDPH, α, α-diphenyl-β-picrylhydrazyl,

^dmmol TE/100 g DW, mmol Trolox equivalents per 100 g dry weight of date pits;

^eμmol EE /g DW, μmol EDTA equivalents per g dry weight of date pits. 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS), Ferric reducing antioxidant power (FRAP).