Carotenoid composition of Algerian date varieties (Phoenix dactylifera) at different edible maturation stages

Boudries, Hafid; Kefalas, Panagiotis; Hornero‐Méndez, Dámaso

doi:10.1016/j.foodchem.2006.03.043

Cited by 106 publications

(43 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Choosing an extraction technique often involves a trade-off between cost (materials and labor), optimal DNA yield, and the removal of substances that could interfere with polymerase chain reaction (PCR) (Sánchez-Hernández and Gaytán-Oyarzún 2006). Like other fruits, the date presents many challenges for DNA extraction due to its complex composition and the presence of a broad range of polysaccharides, carbohydrates, polyphenols, and fibers, and high salt content, which can interfere with enzymatic and chemical reactions during DNA extraction or PCR analysis (Boudries et al 2007;Vayalil 2012). Here, we applied a modified CTAB (cetyltrimethylammonium bromide) protocol to extract bacterial DNA from the Btana product.…”

Section: Introductionmentioning

confidence: 99%

Metagenomic analysis of the bacterial microbiota linked to the traditional Algerian date product “Btana”

et al. 2015

View full text Add to dashboard Cite

In this study, using high throughput Bpyrosequencing,ŵ e highlighted the bacterial diversity of the traditional Algerian date product BBtana^that is produced in southern Algeria using both direct (DBM) and indirect (UBM) methods. Metagenomic analysis yielded a total of 103,379 reads, with a 606 total operational taxonomic units (OTUs) detected. Firmicutes represented 84.79 % of the total pyrosequencing reads. Phylogenetic analysis revealed that the Bacillales represented 90.20 % ± 15.12 % of the total reads. Among the phylotypes detected, Bacillus was the dominant genus (39.53 %). While Bacillus megaterium was shared among all of the samples, its distribution varied widely. Non-metric multidimensional scaling (nMDS) analysis showed that UBM samples clustered together, and three main OTUs were found in these UBM samples: Paenibacillus polymyxa, Paenibacillus xylanexedens, and Planomicrobium JN082684. Correlation analysis showed no association between parameters of the samples (age, pH, water activity) and the specific microbiota.

show abstract

Section: Introductionmentioning

confidence: 99%

Metagenomic analysis of the bacterial microbiota linked to the traditional Algerian date product “Btana”

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Carbohydrates are the major component of date fruit, reaching more than 70 % (being sucrose, glucose, and fructose the main sugars) (Ahmed et al 1995 ;Myhara et al 1999 ;Elleuch et al 2008 ;Khan et al 2008 ;Amira et al 2011 ). Dates show high amounts of dietary fiber, ranging between 6 to 25 % in date flesh (Ahmed et al 1995 ;Elleuch et al 2008 ;Al-Farsi et al 2005 ;al-Hooti et al 1997 ) and up to 80 % in seeds (Al-Farsi and Lee 2008a ), proteins (Elleuch et al 2008 ;Hamada et al 2002 ;Sahari et al 2007 ;Ishurd et al 2004 ), lipids (Amira et al 2011 ;Hamada et al 2002 ;Sahari et al 2007 ;Besbes et al 2004 ;Al-Shahib and Marshall 2003 ), vitamins, carotenoids (Boudries et al 2007 ), >and phenolic compounds (Bigliari et al 2008 ). Dates are also considered a good source of essential and non-essential elements (Tang et al 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Multi-Element Analysis of Spanish Date Palm (Phoenix dactylifera L.) by Inductively Coupled Plasma-Based Techniques. Discrimination Using Multivariate Statistical Analysis

et al. 2014

View full text Add to dashboard Cite

The elemental analysis of Spanish palm dates by inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry is reported for the first time. To complete the information about the mineral composition of the samples, C, H, and N are determined by elemental analysis. Dates from Israel, Tunisia, Saudi Arabia, Algeria and Iran have also been analyzed. The elemental composition have been used in multivariate statistical analysis to discriminate the dates according to its geographical origin. A total of 23 elements (As, Ba, C, Ca, Cd, Co, Cr, Cu, Fe, H, In, K, Li, Mg, Mn, N, Na, Ni, Pb, Se, Sr, V, and Zn) at concentrations from major to ultra-trace levels have been determined in 13 date samples (flesh and seeds). A careful inspection of the results indicate that Spanish samples show higher concentrations of Cd, Co, Cr, and Ni than the remaining ones. Multivariate statistical analysis of the obtained results, both in flesh and seed, indicate that the proposed approach can be successfully applied to discriminate the Spanish date samples from the rest

show abstract

“…Studies (Boudries et al, 2007) have also shown that dates contain the carotenoids; lutein, β-carotene and neoxanthin. A significant decline in the carotenoid level occurs during the transition from the Khalal through Tamar stage and that during the ripening process (Boudries et al, 2007). Anthocyanins are water-soluble vacuolar pigments and may appear in red, purple, or blue.…”

Section: Chemical Characterizationmentioning

confidence: 99%

Physicochemical characterization and sensory profile of 7 principal Tunisian<br>date cultivars

Ismaıl

Djendoubi

Kodia

et al. 2013

Emir. J. Food Agric

View full text Add to dashboard Cite

The physicochemical characterization and the sensory evaluation of six Tunisian dates' cultivars, preselected on the base of the D-optimal design, have been made to compare them with the principal Tunisian dates cultivar, Deglet Nour. The morphological (fresh fruit weight and pulp content) and physicochemical (quality index) studies showed a great diversity among tested cultivars. In fact, the percentage of pulp indicated the existence of cultivars as interesting as Deglet Nour (89.3 ± 0.0), such as Horra (91.9 ± 0.1) and Alig (92.3 ± 0.1). Chemical analysis showed that Mnekher had high levels of total sugars (59.2 ± 0.0 of FM) and that Angou presented the highest ash content (3.6 ± 0.0%). Also, the sensory profiling revealed that each cultivar has its own distinctive characteristics (colour, texture and taste) and that Deglet Nour, Mnekher and Alig presented a tender and soft texture unlike the others, especially the cultivar Kintichi. In addition, the results relating to the hedonic study showed that Deglet Nour,, known as "finger of light", was the most appreciated (the best preference score) followed by Alig and Mnekher, whereas, the other studied cultivars were rather rejected by the consumers, especially Horra, Kintichi, Angou and Hamra. These two sensory evaluations revealed that the Tunisian consumer is more attracted by sweet and soft cultivars.

show abstract

Carotenoid composition of Algerian date varieties (Phoenix dactylifera) at different edible maturation stages

Cited by 106 publications

References 22 publications

Metagenomic analysis of the bacterial microbiota linked to the traditional Algerian date product “Btana”

Metagenomic analysis of the bacterial microbiota linked to the traditional Algerian date product “Btana”

Multi-Element Analysis of Spanish Date Palm (Phoenix dactylifera L.) by Inductively Coupled Plasma-Based Techniques. Discrimination Using Multivariate Statistical Analysis

Physicochemical characterization and sensory profile of 7 principal Tunisian<br>date cultivars

Contact Info

Product

Resources

About