Physicochemical properties and antioxidant activities of five Iranian pomegranate cultivars (Punica granatum L.) in maturation stage

Abstract

The aim of this study was to compare the physicochemical properties and antioxidant activity of five different pomegranate cultivars. Fruit mass ranged from 109.27 to 78.07 g. Peel thickness of the fruit was recorded from 5.05 to 2.70 mm. The pH, total soluble solids content, the titratable acidity content were within the range of 4.23 to 4.36, 20.00 (•Brix) to 14.05 (•Brix), 0.04 to 0.007 mg per 100 g of juice, respectively. Ascorbic acid content was from 4.73 to 1.98 mg per 100 g of juice. The amount of total phenolics in pomegranate cultivars was between 6.36 and 1.78 mg GAE/100 ml. The total flavonoids content also ranged between 4.93 to 2.24 mg GAE/100 ml. The level of antioxidant activity was varied from 86.77 % to 79.54 %. Reducing sugar content ranged between 5.81 to 1.72 mg/100g. Glucose content was found from 3.48 to 1.14 mg/100g. In total based on these results, the cultivar is the main parameter which influences the physic-chemical properties and antioxidant activity in pomegranates.

Comprehensive Evaluation of Late Season Peach Varieties (Prunus persica L.): Fruit Nutritional Quality and Phytochemicals

“…The total lipids in the cv. Redhaven peach [59] were closer to the results reported for the "Flat Queen" variety.…”

Principal component analysis (PCA) of physicochemical compounds’ content in different cultivars of peach fruits, including qualification and quantification of sugars and organic acids by HPLC

“…Also, maturity index (MI) of fruits was analyzed in this study (Table 1). It determines the relationship between contents of total soluble solids content and acids and is used to classify fruits as sour (MI: 5-7), sour-sweet (MI: 17-24), and sweet (MI: 31-98) [24]. In addition, the MI appears to be a key factor responsible for the flavor and taste of fruit [11].…”

Comparison of fruit quality characteristics and polyphenolic compounds in seven Iranian pomegranate cultivars

“…Comparison of TSS in different pomegranate cultivars has been carried out previously. Nikdel et al 15 reported a range between 20.00 • Brix ('Rabbab') to 14.05 •Brix ('Shahvar'), Akbarpour et al 29 reported similar range (15.17-22.03 •Brix). However, Tehranifar et al 13 observed a lower range (11.37-15.07 • Brix) in 20 Iranian pomegranate cultivars.…”

“…They observed the highest (315 g) and lowest fruit weight (196 g) in Shirin Pust Sefeed and Shirin Pust Ghermez cultivars respectively. Nikdel et al 15 compared five Iranian pomegranate cultivars and observed the highest and lowest fruit mass in Shishe-Kap (109.27 g) and in Ghand, Shalghami and Shahvar (78.07, 78.42, 80.94 g) respectively. Variation of fruit weight is due to the cultivar and ecological conditions.…”

“…[8][9][10] Cultivar, growing region, climate, maturity and cultural practice are the main factors determining chemical composition of pomegranate fruits. [11][12][13][14][15] Significant differences in various fruit quality parameters such as organic acids, phenolic compounds, sugars and water-soluble vitamins have been reported in previous studies. [16][17][18] Although Iran and its neighboring regions are considered as center of origin of this species and in spite of numerous pomegranate cultivars native to Iran studies on the properties of the cultivars are limited.…”