Total phenol, total flavonoid and ascorbic acid content of Iranian commercial orange juice

Hoda Ashari; Naficeh Sadeghi; Mohammad Reza Oveisi; Mannan Hajimahmoodi

doi:10.18502/jfsh.v6i1.6022

Hoda Ashari Department of Drug and food control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
Naficeh Sadeghi Department of Drug and food control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
Mohammad Reza Oveisi Department of Drug and food control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
Mannan Hajimahmoodi Department of Drug and food control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.

DOI: https://doi.org/10.18502/jfsh.v6i1.6022

Keywords: Pheno; Flavonoid; Ascorbic acid; Citrus sinensis

Abstract

This study was designed to measure and compare the total phenols, flavonoids and vitamin C contents in four orange juice brands which are commercially available in Iran. Total phenols, flavonoids and ascorbic acid content of 100 samples from four different commercial brands were evaluated by the spectrometric method. The concentration of total phenol in commercial orange juice samples was between 28.39 and 114.20 mg gallic acid equivalent per liter (mg GAE/L). The measured range of total flavonoids was from 12.53 to 32.62 mg quercetin equivalent per liter (mg QE/L) and the content of ascorbic acid in the samples was between 29.95 and 93.08 mg/L. The results showed a significant difference between the four brand`s total phenols, flavonoids and vitamin C level (P< 0.05). According to the found variation among different studied brands, setting a determined amount for the measured parameters is suggested.