Total Phenolics and Antioxidant Properties of Date Palm (Phoenix Dactylifera L.) Pits as Affected by Cultivar and Location

Alturki, Saleh M.; Shahba, Mohamed A.; Stushnoff, Cecil

doi:10.17660/actahortic.2010.882.135

Cited by 42 publications

(45 citation statements)

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“…These decreasing values of TPC in date fruits were also reported in previous published data (Amoros et al, 2009;Awad et al, 2011a). Our findings of TPC are the same as Omani (Al-Farsi et al, 2005;2007b), Saudi Arabia and American (Al-Turki et al, 2010) dates. The differences in the TPC values may be due to variety, ripeness, cultivation region, environmental factors and storage time and conditions (Biglari et al, 2009).…”

Section: Total Phenolic Contentssupporting

confidence: 92%

“…Moreover, some related studies have also been reported on date fruits from Saudi Arabia and the USA (Al-Turki et al, 2010), Oman (Al-Farsi et al, 2005;2007a), Algeria (Mansouri et al, 2005), Iran (Biglari et al, 2008) and Bahrain (Allaith, 2008). However, limited studies have been done on antioxidant activity, total phenolic contents and sugar profiling of date fruits during their development.…”

Section: Introductionmentioning

confidence: 99%

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Biochemical attributes of dates at three maturation stages

Haider¹,

Khan²,

Jaskani³

et al. 2014

Emir. J. Food Agric

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The date fruit is a primary component of the human diet in many countries with arid and semiarid climates. The present study reflects the relationship of different biochemical attributes with progressive date fruit developmental stages. The study involved eight date palm (Phoenix dactylifera L.) cultivars from Pakistan examined at three different edible stages of dates (khalal, rutab and tamar). The antiradical efficiency (2.14-0.36), antioxidant enzymes (catalase and peroxidase), total phenolic contents (468.99-108 mg GAE/100g, FW) and the soluble protein contents (5.73-2.75 g/100g) were higher in higher at khalal and thereafter, but declined at fully ripened (tamar) stage. Moreover, glucose (16.92-31.66%) and fructose (15.25-30.58%) have lower quantity at khalal and higher quantity at tamar stage, whereas non-reducing (sucrose) sugars were present only at khalal and rutab stage fruits. Makran and Chohara cultivars revealed best overall values in examined compounds. Our results revealed that variation in different biochemical attributes is mainly depended on the difference in fruit maturity stage and cultivar. Cultivars exhibiting high values of beneficial biochemical attributes may be considered for the expansion of date palm cultivation.

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Section: Total Phenolic Contentssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Biochemical attributes of dates at three maturation stages

Haider¹,

Khan²,

Jaskani³

et al. 2014

Emir. J. Food Agric

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“…Antioxidant activity of date fruit has been reported by many investigators (Table ) . Date fruit extract can inhibit protein oxidation as well as neutralise superoxide and hydroxyl radicals.…”

Section: Nutritional and Medicinal Values Of Date Fruitmentioning

confidence: 95%

Date fruit: chemical composition, nutritional and medicinal values, products

2013

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Date fruit has served as a staple food in the Arab world for centuries. Worldwide production of date fruit has increased almost threefold over the last 40 years, reaching 7.68 million tons in 2010. Date fruit can provide many essential nutrients and potential health benefits to the consumer. Date fruit goes through four ripening stages named kimri, khalal, rutab and tamer. The main chemical components of date fruit include carbohydrates, dietary fibre, enzymes, protein, fat, minerals, vitamins, phenolic acids and carotenoids. The chemical composition of date fruit varies according to ripening stage, cultivar, growing environment, postharvest conditions, etc. The nutritional and medicinal activities of date fruit are related to its chemical composition. Many studies have shown that date fruit has antioxidant, antimutagenic, anti-inflammatory, gastroprotective, hepatoprotective, nephroprotective, anticancer and immunostimulant activities. Various date fruit-based products such as date syrup, date paste, date juice and their derived products are available. Date by-products can be used as raw materials for the production of value-added products such as organic acids, exopolysaccharides, antibiotics, date-flavoured probiotic-fermented dairy produce, bakery yeasts, etc. In this paper the chemical composition and nutritional and medicinal values of date fruit as well as date fruit-based products are reviewed.

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“…Pulps of dates hold easily digestible sugars (70%), mostly glucose, sucrose, and fructose, dietary fibers, and enclose less proteins and fats (Al Farsi and Lee, 2008). Moreover, date fruits possess antioxidant and antimutagenic properties (Vayalil, 2002), attributable to their high levels of polyphenolic compounds and vitamins (Mansouri, et al, 2005;Al-Turki, et al, 2010). The date fruit pulp is rich in phytochemicals such as phenolics, sterols, carotenoids, anthocyanins, procyanins, and flavonoids.…”

Section: Introductionmentioning

confidence: 99%

Phenolic Content and Antimicrobial activities of Date Palm (Phoenix dactylifera L.) Fruits and Leaves

Qadoos

Dhafari

Marzooqi

et al. 2017

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This study aimed to investigate total phenolic content and antibacterial activities of different extracts recovered from date palm fruit and leaves using various solvents, including methanol, ethanol, and water. The results showed that the highest phenolic content was found in leaf methanol extract, followed by leaf ethanol extract, and then followed by seed methanol extract (74.4, 67.3, and 64.7 mg/g, respectively). Whereas the date methanol extract had the lowest phenolic content (5 mg/g). The study was also scrutinized to find the antibacterial inhibitory property in the leaves and fruits of date palm against four bacterial species (Escherichia coli, Staphylococcus aureus, Bacillus subtilis, and Pseudomonas aeruginosa) using the well-diffusion method and minimum inhibitory concentration (MIC). Date leaves' extracts showed inhibitory effect on the growth of S. aureus and B. subtilis and resistance to P. aeruginosa and E. coli. MIC of methanol and ethanol (70%) leaves' extract was 100 and 250 mg/ml for S. aureus and B. subtilis, respectively; however, all the bacteria have resistance to date fruits' extracts.

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Total Phenolics and Antioxidant Properties of Date Palm (Phoenix Dactylifera L.) Pits as Affected by Cultivar and Location

Cited by 42 publications

References 0 publications

Biochemical attributes of dates at three maturation stages

Biochemical attributes of dates at three maturation stages

Date fruit: chemical composition, nutritional and medicinal values, products

Phenolic Content and Antimicrobial activities of Date Palm (Phoenix dactylifera L.) Fruits and Leaves

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