HPLC Evaluation of Phenolic Profile, Nutritive Content, and Antioxidant Capacity of Extracts Obtained from Punica granatum Fruit Peel

Table 1

Preliminary phytochemical screening of the Punica granatum peel extract.

Chemical; compounds	Result	AQPE	MPE
Saponins	+	QND	QND
Steroids	+	QND	QND
Alkaloids	+	QND	QND
Tannins	+	QND	QND
Carbohydrates	+	QND	QND
Flavonoids^a	+	23.05 ± 1.54	49.8±2.14^∗
Flavonols^a	+	0.39 ± 0.04	0.44 ± 1.54 µg
Anthraquinone	+	QND	QND
Proanthocyanidins^b	+	9.09 ± 0.86	14.09 ± 1.56
Glycosides	+	QND	QND
Reducing sugars	+	QND	16.94 ± 0.39 mg/100 mg
Total phenol^c	+	185 ± 12.45	298±24.86^∗
Coumarins	+	QND	QND

QND: quantity not determined, −: compound not detected, +: compound detected, whereas AQPE, aqueous, and MPE, indicate methanolic extract.aTotal flavonoids and flavonols content analyzed as quercetin equivalent (QE) mg/g of extract; values are the average of triplicates. bTotal proanthocyanidins content analyzed as catechin acid equivalent (GAE) mg/g of extract; values are the average of triplicates. cTotal phenol content analyzed as gallic acid equivalent (GAE) mg/g of extract; values are the average of triplicates. ∗Significant difference between aqueous and methanolic extract at 𝑃<0.05.