Phenolic Contents and Antioxidant Potential of Crataegus Fruits Grown in Tunisia as Determined by DPPH, FRAP, and β-Carotene/Linoleic Acid Assay

Table 1

Phenolics contents in different crude part extracts of red and yellow Crataegus.

Source of extract
	Variety	Peel	Pulp	Seed
Total phenolics^a	C. monogyna	123.35±0.02	122.26±0.16	45.72±0.04
	C. azarolus	71.24±0.01	60.89±0.04	36.03±0.02
Total flavonoids^b	C. monogyna	198.53±0.11	160.35±0.1	96.01±0.01
	C. azarolus	155.40±0.23	60.45±0.06	14.71±0.02
Proanthocyanidins^c	C. monogyna	873.58±0.33	507.31±0.32	399.68±0.29
	C. azarolus	352.91±0.29	291.16±0.19	97.06±0.21
Total anthocyanins^d	C. monogyna	5.58±0.05	0.31±0.03	0
	C. azarolus	0	0	0

aTotal phenol: Folin-Ciocalteu, in mg eq. gallic acid/100 g DW.
bFlavonoids: AlCl₃ method, in mg eq. rutin/100 g DW.
cAnthocyanins: direct colorimetry in mg eq. cyanidin-3-O-glucoside/100 g DW.
dProcyanidins: butanol-HCl methods, in mg eq. cyanidins/100 g DW.