Nutritional composition of fruit of four date palm (Phoenix dactylifera L.) cultivars grown in Haryana, India

Abstract

The present investigation was conducted to evaluate the nutrient composition of four varieties of date fruit. The results of the study indicated that the variety Shamran had highest protein (2.77%) content and the variety Medjool the lowest (1.88%). Fat and crude fibre contents of date fruit varieties ranged from 0.17 to 0.50% and 1.71 to 2.22%, respectively. The variety Medjool had lowest amount of total soluble sugars (67.49g/100g) and reducing sugar (61.31g/100g). All the varieties of date fruit differed non-significantly among themselves for their non-reducing sugar content. The variety Khadrawi had the highest amount of starch content. Total dietary fiber (11.70g/100g) and soluble dietary fiber (3.34g/ 100g) were highest in variety Hillawi. All the four varieties of date fruit differed significantly from each other for their total dietary fiber content and soluble dietary fiber content. The varieties Khadrawi (8.46%), Hillawi (8.35%) and Shamran (7.94%) had significantly (p 0.05) higher insoluble dietary fiber as compared to variety Medjool (4.25%). The variety Shamran had highest amount of calcium (195.33mg/100g) and zinc (1.81mg/100g). The variety Medjool contained lowest amount of calcium (70.33mg/100g), iron (1.91mg/100g) and potassium (713mg/100g) while the highest amount of phosphorus (52.66mg/100g). A non-significant (p0.05) difference was observed in magnesium content of all the varieties. Polyphenol content of date fruits from different varieties ranged from 228.79 to 253.21 mg/100g.

Influence of different sources of pollen on the chemical composition of date (Phoenix dactylifera L.) cultivar Medjool in México

“…Our results are low compared to results obtained by two previous studies conducted in India (Vinita and Punia, 2016) and Morocco (Bouhlali et al, 2017); their moisture contents were 85.53% and 30.82% for the Medjool cultivar, respectively, compared with our moisture percentage (23.49%) among four treatments (Table 1). The protein contents are not statistically significant between the four treatments and the control.…”

“…The highest average (7.50%) was for the Khadrawy cultivar and the lowest for the Deglet Noor cultivar (-8.82%), compared to the control treatment. The average fat content shown in this study is 0.75% among four sources of pollen, while lower percentages (0.17% and 0.31%) were obtained by (Vinita and Punia, 2016;Bouhlali et al, 2017), respectively. The influence of various pollen sources does not have a significant effect on the fruit crude fiber (Table 1).…”

“…It was found that the highest average value was 4.66% for Zahidi cultivar and the lowest average value was for the Deglet Noor cultivar with -1.31%, with respect to control treatment. The study performed in India (Vinita and Punia, 2016) reported 1.96%, while our average crude fiber among four treatments was 7.07%. Significant differences were observed for the ash content among the four cultivars ( Table 1).…”

“…The average protein content among the four cultivars was 3.14% (Table 1). The reported results of protein content in (Vinita and Punia, 2016) and (Bouhlali et al, 2017) were 1.88% and 3.45% in the Medjool cultivar, respectively. Hence, the date fruit yields a low amount of protein (g/100 g).…”

“…Due to the high nutritional value of the dates, several studies have focused on determining the chemical properties during all stages of growth until maturation, under each country's conditions (Ahmed et al, 1995;Al-Hooti et al, 1997). Other studies deal with the identification of the most representative cultivars in each country (Mohamed et al, 2014;Assirey, 2015;Vinita and Punia, 2016;Bouhlali et al, 2017). The chemical composition, sugars, antioxidant activity and mineral content have been reported as their most significant results.…”