Ultrasonic Extraction of Phenolic Compounds from Eggplant Peel and Formulation of Eggplant Peel Extract-Enriched Ice-Cream

Table 4

HPLC analysis of the optimized eggplant peel extract.

Phenolic compound	Retention time (min)	Area (%)	Concentration (mg/kg)
Quercetin	2.753	0.2	5.24
Gallic acid	4.827	0.2	4.34
Benzoic acid	14.587	3.6	184.41
Chlorogenic acid	15.100	6.9	261.76
Syringic acid	16.427	6.4	78.48
p-Coumaric acid	17.700	7.8	49.59
Cinnamic acid	25.247	1.9	32.17
Sinapic acid	26.000	0.9	5.14