Classification and assessment of antioxidant activity and phenolic content of different varieties of date palm (Phoenix dactylifera) fruits from Iran

Hemmateenejad, Bahram; Karimi, Sadegh; Javidnia, Katayoun; Parish, Maryam; Khademi, Rahim

doi:10.1007/s13738-015-0668-y

Cited by 7 publications

(4 citation statements)

References 27 publications

(28 reference statements)

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“…Therefore, the very high positive correlation coefficient determined for TFC/DPPH-radical inhibition capacity (r = 0.8846) in our study is not surprising. In accordance with our findings, Odeh et al (2014) and Hemmateenejad et al (2015) detected very strong positive correlations for TFC/antioxidant activity (r = 0.935-0.961) and TPC/antioxidant activity (r = 0.97) of Palestinian and Iranian date palm fruits, respectively. However, our findings contrast with the results of Lekbir et al (2015) who reported very weak correlations between TFC/ DPPH-radical scavenging capacity (r = 0.24) and TFC/TPC (r = 0.342) of Algerian date palm fruits.…”

Section: Correlations Between Bioactives Contents and Dpphradical Inhibition Ability Of Date Samplessupporting

confidence: 91%

“…DPPH-radical scavenging activity of fresh date paste was 5.08 mM TE/100g, while those of hot air-dried date powders ranged between 5.02 mM TE/100g and 5.15 mM TE/100g. Unlike our study, comparatively low DPPH-radical scavenging activities were determined in fresh date palm fruits grown in U.S.A., Saudi Arabia, Iran and Mauritania (Al-Jasass, Siddiq and Sogi, 2015;Al-Turki, 2008;Al-Turki et al, 2010;Hemmateenejad, Karimi, Javidnia, Parish and Khademi, 2015;Mohamed Lemine et al, 2014). Similarly, İzli (2016) reported lower DPPH-radical scavenging activity (0.14 mM TE/100g (dw)) for methanol/ water extracts of fresh date fruits sold in Turkey.…”

Section: Condensed Tannin Contentcontrasting

confidence: 78%

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Effect of inulin concentration on physicochemical properties and antioxidant activity of date powders obtained by hot-air tray dryer

Özbek

Çelik

Ergönül

2021

International Journal of Agriculture Environment and Food Sciences

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In the present study, it was aimed to produce free-flowing date powders using various levels of inulin as dryingaid agent (10, 20, 30, 40, and 50%) through hot-air drying at 60°C for 24 h. Effects of different inulin ratios on physicochemical properties of date powders were investigated. This is the first report which evaluated the suitability of this prebiotic carbohydrate as drying-aid agent to fabricate date powders. Inulin addition yielded date powders with high flowability. On the other hand, contents of bioactive compounds including total phenolics, flavonoids, and condensed tannins of date powders decreased significantly (P<0.05) as the inulin concentration increased from 10% to 50% Accordingly, DPPH-radical inhibition capacities reduced in date powders containing higher levels of inulin. Furthermore, significant correlations were detected between bioactives contents and antioxidant activity of date samples. The results showed that free-flowing date powders with improved prebiotic content may be produced by incorporating inulin up to ratio of 50% and used as sugar substitute in different food products.

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Section: Correlations Between Bioactives Contents and Dpphradical Inhibition Ability Of Date Samplessupporting

confidence: 91%

Section: Condensed Tannin Contentcontrasting

confidence: 78%

Effect of inulin concentration on physicochemical properties and antioxidant activity of date powders obtained by hot-air tray dryer

Özbek

Çelik

Ergönül

2021

International Journal of Agriculture Environment and Food Sciences

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“…Singh, Guizani, Essa, Hakkim, and Rahman (2012) observed that Omani date varieties carried appreciable antioxidant activities, that is, Fardh (72.7%), Khalas (72.1%), and Khasab (69.5%). Hemmateenejad, Karimi, Javidnia, Parish, and Khademi (2015) reported the antioxidant activity and total phenolics in date as 21.31–35.85 µmol Trolox equivalent/100 g and 250–398.23 mg GAE/100 g fw, respectively. It has been suggested that the antioxidant activity in date fruit is a biological activity of phenolic compounds (Awad, Al‐Qurashi, & Mohamed, 2011; Mansouri et al, 2005) and the current results support this idea as these phytochemicals and some other non‐phenolic constituents may contribute to the antioxidant activity of date fruit.…”

Section: Resultsmentioning

confidence: 99%

Bioactive properties, fatty acid compositions, and phenolic compounds of some date palm (Phoenix dactyliferaL.) cultivars

Juhaimi

Özcan

Uslu

et al. 2020

J Food Process Preserv

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The antioxidant activity values and total phenol contents of date flesh samples changed between 6.61 (Osailah)–10.72% (Rothanh Qassim) and 50.64 (Osailah)–98.61 mgGAE/100 g (Rothanh Qassim), respectively. Hence cultivars showed significant (p ˂ .05) variations. Among phenolic compounds, gallic acid contents of date flesh varied between 1.61 (Sbakah) and 11.23 mg/100 g (Rushudiah), 3,4‐dihydroxybenzoic acid between 0.30 (Rushudiah) and 2.68 mg/100 g (Rothanh Qassim), and (+)‐catechin between 0.29 (Osailah) and 2.98 mg/100 g (Nabtat Ali). Fatty acid composition of date flesh showed palmitic acid changing from 12.77 (Osailah) to 16.04% (Rothans Qassim), elaidic acid from 39.21 (Osailah) to 67.99% (Sbakah), and linoleic acid from 11.61 (Sbakah) to 18.95% (Osailah). Crude protein contents of date flesh samples were between 2.06 (Nabtat Ali) and 16.67% (Osailah). Ca, K, Mg, and P were the major elements in date fruits. Ca, K, and P contents of date flesh samples were found between 10.90 (Sbakah)–237.18 mg/kg (Rushudiah), 54.17 (Rothanh Qassim)–214.66 mg/kg (Rushudiah), and 8.24 (Nabtat Ali)‐26.77 mg/kg (Rushudiah), respectively. Practical applications The date palm (Phoenix dactylifera L.) is one of the mankind's oldest cultivated plants. The date derivatives are rich in nutraceuticals and pharmaceuticals. Date flesh has nutritive components as potentially active antioxidant phytochemicals. The date has been an important crop in the desert regions of Arabian countries. Dates are rich in certain nutrients and provide a good source of rapid energy.

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“…We retrieved and screened the full texts of the remaining one hundred and twenty-five articles, ninety-three of which were excluded as they were ineligible based on the inclusion criteria. Finally, a sum of thirty-two articles was selected and included in this scoping review (Mansouri et al 2005;Benmeddour et al 2013;Ghiaba et al 2014;Haimoud et al 2016;Hachani et al 2018;Allaith 2008;Abbas et al 2008;Biglari et al 2008;Shahdadi et al 2015;Hemmateenejad et al 2015;Siahpoosh et al 2016a;Siahpoosh et al 2016b;Lemine et al 2014;Bouhlali et al 2017;Singh et al 2012;Al Harthi et al 2015;Haider et al 2018;Al-Turki et al 2010;Al-Najada and Mohamed 2014;Hamad et al 2015;Ali et al 2016;Farag et al 2016;Aldhafiri 2017;Saafi et al 2009;Chaira et al 2009;Mrabet et al 2012;El Arem et al 2012;Kchaou et al 2013;Kchaou et al 2014;Mrabet et al 2015;Hamza et al 2016;Souli et al 2018).…”

Section: Search Process Resultsmentioning

confidence: 99%

Antioxidant Content Determination in Ripe Date Fruits (Phoenix dactylifera L.): a Scoping Review

et al. 2021

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Ripe date fruits are a rich source of antioxidants. The current scoping review was conducted to identify various characteristics of studies that were carried out to determine antioxidant content in ripe date fruits. The framework established by Arksey and O’Malley was adopted to conduct this scoping review. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis extension for Scoping Reviews (PRISMA-ScR) was used as a guide during the review process. Relevant studies published in March 2019 or any time before were retrieved from three databases. Study selection was performed based on specific inclusion criteria. The extracted data from selected studies were organized in a charting table, and then analyzed using descriptive statistics. A sum of thirty-one articles were selected and included in the present scoping review. Various characteristics of the selected studies, collected ripe date fruit samples, and extraction solvents, as well as information about determining antioxidant content and the used analytical methods, citation references for procedures, measurement units, and data presentation methods, have been identified and discussed carefully. High inconsistency and variability were observed among the selected studies. The research gaps and future recommendations to promote higher research design consistency and improve research quality in this area of research have been described.

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Classification and assessment of antioxidant activity and phenolic content of different varieties of date palm (Phoenix dactylifera) fruits from Iran

Cited by 7 publications

References 27 publications

Effect of inulin concentration on physicochemical properties and antioxidant activity of date powders obtained by hot-air tray dryer

Effect of inulin concentration on physicochemical properties and antioxidant activity of date powders obtained by hot-air tray dryer

Bioactive properties, fatty acid compositions, and phenolic compounds of some date palm (Phoenix dactyliferaL.) cultivars

Antioxidant Content Determination in Ripe Date Fruits (Phoenix dactylifera L.): a Scoping Review

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