Chemical and aroma volatile compositions of date palm (Phoenix dactylifera L.) fruits at three maturation stages

Amira, El Arem; Flamini, Guido; Behija, Saafi Emna; Issaoui, Manel; Nesrine, Zayene; Ferchichi, Ali; Hammami, Mohamed; Helal, Ahmed Noureddine; Achour, Lotfi

doi:10.1016/j.foodchem.2011.02.051

Cited by 157 publications

(83 citation statements)

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“…Generally, sucrose undergoes a complete hydrolysis, especially at tamar stage. However, our results are in agreement with previous reports on Tunisian dates (Amira et al, 2011) and Iranian dates (Rastegar et al, 2012). The glucose and fructose (G/F) ratio are less, equal to those previously reported by Sahari et al (2007) and Elleuch et al (2008).…”

Section: Specific Activity Of Antioxidant Enzymessupporting

confidence: 93%

“…In the presented results, sucrose contents were higher at khalal stage and after conversion a very small amount was present at rutab stage, while the accumulation of reducing sugars (glucose and fructose) started from khalal and was higher with different concentrations at tamar stage depending on the cultivars (Sawaya et al, 2006;Amoros et al, 2009). The reduction in sucrose and further increase in glucose and fructose contents is due to increasing activity of the invertase enzyme, which converts sucrose into reducing sugars (Amira et al, 2011). Generally, sucrose undergoes a complete hydrolysis, especially at tamar stage.…”

Section: Specific Activity Of Antioxidant Enzymesmentioning

confidence: 48%

“…Sugar profile was calculated using highperformance liquid chromatography (HPLC) as reported by Amira et al (2011). The edible part of date (1 g) was added to 2 ml of distilled water with constant stirring for 10 min to support dissolving the sugars in water.…”

Section: Sugar Profile (Hplc)mentioning

confidence: 99%

“…About 325 date cultivars are reported in Pakistan (Jamil et al, 2010). Date fruit is a single-seeded berry with a fleshy pericarp and fibrous endocarp (Amira et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Chemically date fruit is composed of total sugars, dietary fibers, proteins, vitamins, fat, mineral contents and a very small starch content (Baliga et al, 2011;Vayalil, 2011), each of which may vary, depending on cultivar type, fruit maturation stage, soil type and agronomic practices (Al-Farsi et al, 2007b;Amira et al, 2011). 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).…”

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: Specific Activity Of Antioxidant Enzymessupporting

confidence: 93%

Section: Specific Activity Of Antioxidant Enzymesmentioning

confidence: 48%

Section: Sugar Profile (Hplc)mentioning

confidence: 99%

“…About 325 date cultivars are reported in Pakistan (Jamil et al, 2010). Date fruit is a single-seeded berry with a fleshy pericarp and fibrous endocarp (Amira et al, 2011).…”

Section: Introductionmentioning

confidence: 99%