High performance liquid and thin-layer chromatographic determination of phenolic acids in palm (Phoenix dactilifera) products

Régnault-Roger, Catherine; Hadidane, Rafik; Biard, Jean-François; Boukef, K.

doi:10.1016/0308-8146(87)90054-9

Cited by 60 publications

(39 citation statements)

References 3 publications

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“…Although, these researchers used different methods and extraction solvents, which make any quantitative comparison difficult, Vayalil (2002) stated that potent antioxidant and antimutagenic activities of dates implicate the presence of compounds with potent free radicals scavenging activity. In addition, Regnault‐Roger et al. (1987) and Al‐Farsi et al.…”

Section: Resultsmentioning

confidence: 99%

Phenolic content and antioxidant activity of four date palm (Phoenix dactylifera L.) fruit varieties grown in Tunisia

Saafi

Arem

Issaoui

et al. 2009

Int J of Food Sci Tech

101

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Fruits of date palm (Phoenix dactylifera L.) are consumed throughout the world and are a vital component of the diet in most Arabian countries. This study has been carried out to evaluate the total phenolic content and the antioxidant activity of four date palm fruit varieties grown in Tunisia. All measurements were made at the 'tamar' stage-the final stage of fruit ripeness. The date varieties were found to be rich in total phenolic ranging from 209.42 mg of equivalent gallic acid ⁄ 100 g fresh weight in Kentichi to 447.73 mg equivalent gallic acid ⁄ 100 g fresh weight in Allig. The date varieties studied were characterised by a high antioxidant activity ranging from 866.82 for the Deglet Nour to 1148.11 lmol Equivalent Trolox ⁄ 100 g fresh weight for Khouet Kenta by the ABTS method. In fact, the DPPH method revealed that Allig having the lowest antioxidant activity (0.72) followed by Deglet Nour (1.53), Kentichi (1.68) and Khouet Kenta variety (1.96). This study suggest that Tunisian date palm fruit may serve as a good source of natural antioxidants and could potentially be considered as a functional food ingredient.

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Section: Resultsmentioning

confidence: 99%

Phenolic content and antioxidant activity of four date palm (Phoenix dactylifera L.) fruit varieties grown in Tunisia

Saafi

Arem

Issaoui

et al. 2009

Int J of Food Sci Tech

101

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“…Phenolic compounds which have been identified in date fruits and that may contribute to the antioxidant activities include protochatechuic, p‐hydroxbenzoic, syringic, vanillic, caffeic, p‐coumaric and ferulic (Regnalut‐Roger et al., 1987; Mansouri et al., 2005). Ferulic, coumaric, and sinapic acids are being present in all varieties.…”

Section: Discussionmentioning

confidence: 99%

“…Ferulic, coumaric, and sinapic acids are being present in all varieties. Relatively high concentration of free ferulic and p‐coumaric acids is a property of date fruits, not very much shared by other fruits (Regnalut‐Roger et al., 1987). The predominant phenolics found in date fruits are very active as antioxidants (Cuvelier et al., 1992), and the antiradical activity in dates was highly correlated to the phenolic contents (Mansouri et al., 2005).…”

Section: Discussionmentioning

confidence: 99%

Antioxidant activity of Bahraini date palm (Phoenix dactylifera L.) fruit of various cultivars

Allaith¹

2008

Int J of Food Sci Tech

173

115

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Summary Fruits of sixteen cultivars of date palm (Phoenix dactylifera L.) commonly grown in Bahrain were evaluated for their antioxidant activity, total phenolics and ascorbic acid contents at different ripening stages using the ferric reducing antioxidant power (FRAP) assay. The highest total antioxidant activity was found at biser (unripe) stage, with a mean FRAP value of 5.71 ± 4.31 mmol/100 g fresh weight (FW), followed by rutab (soft and ripped) with FRAP values of 1.2 mmol per 100 g FW and tamer (dried fruit) 0.94 ± 0.21 mmol per 100 g FW. Total antioxidant activities of locally collected and imported tamer were similar. There was about twelve and six fold difference between cultivars possessing the highest and lowest antioxidant values at biser and rutab stages, respectively. A sharp decrease in antioxidant activity was found to be associated with the fruit ripening. The average of phenolics at biser and rutab stage were 196.8 ± 72.1 and 116.7 ± 44.1 mg per 100 g fresh weight, whereas the average of ascorbic acid was 6.6 ± 2.4 and 3.3 ± 1.3 mg per 100 g fresh weight, respectively. Significant correlation was found between the antioxidant activity and total phenolic content (r = 0.595) and ascorbic acid (r = 0.385) at biser stage, but not at rutab stage. It was concluded that the phenolics were the major contributor for the antioxidant activity.

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“…Date fruits at the fully mature stage are rich in functional components, including phenolic compounds (Al-Farsi et al , 2005;Al-Farsi and Lee, 2008;Hussein, 1970;Sawaya and Mashadi, 1983;Al-Ogaidi and Mutlak, 1986;Regnault et al , 1987;Ramos et al , 1997;Modafar et al , 2000;Al-Abid, 2003;Ishurd et al , 2003;Allaith et al , 2008;Biglari et al , 2008;Saafi et al , 2009). Tannins, which are the most dominant phenolic compounds in date fruits and are closely associated with the fruit ripening process, decrease from a high level in the khalal stage to reach minimum concentration in the ripe (rutab and tamr) stages (Rouhani and Bassiri, 1976;Sawaya and Mashadi, 1983).…”

Section: Nutritional Components and Health Benefi Tsmentioning

confidence: 98%

Date ( Phoenix dactylifera L.)

Yahia¹,

Kader²

2011

Postharvest Biology and Technology of Tropical and Subtropical Fruits

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High performance liquid and thin-layer chromatographic determination of phenolic acids in palm (Phoenix dactilifera) products

Cited by 60 publications

References 3 publications

Phenolic content and antioxidant activity of four date palm (Phoenix dactylifera L.) fruit varieties grown in Tunisia

Phenolic content and antioxidant activity of four date palm (Phoenix dactylifera L.) fruit varieties grown in Tunisia

Antioxidant activity of Bahraini date palm (Phoenix dactylifera L.) fruit of various cultivars

Date ( Phoenix dactylifera L.)

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