Tunisian Date Cultivars: Economical Aspect, Physicochemical Properties, Sensory Characterization and Potential Valorization

Ismaıl, Hanen Ben; Hassine, Dorsaf Ben

doi:10.1007/978-3-030-74660-5_4

Cited by 4 publications

(5 citation statements)

References 24 publications

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“…Date palm is a vital agricultural crop in the Tunisian oases located in the south of Tunisia, which is characterized by a desert climate and lack of rainfall. The main variety of dates grown in Tunisia is Deglet Nour, which is characterized by its good sensory and nutritional qualities compared to the other varieties (Ismail and Hassine, 2021). Tunisia is an important country at the global level in the production and export of dates.…”

Section: Tunisiamentioning

confidence: 99%

“…Economically, Tunisia is the first source of exported dates globally, especially the Deglet Nour variety. The export revenue from dates in Tunisia amounted to the equivalent of 200 million Euros in 2018 (Ismail and Hassine, 2021).…”

Section: Tunisiamentioning

confidence: 99%

“…Moreover, a study used pectinase and cellulase enzymes to obtain date syrup from date juice that is free from turbidity and with a high percentage of total solids (Abbès et al, 2011(Abbès et al, , 2013Ismail and Hassine, 2021;). • Studies were conducted to use biotechnology to produce alcohol and vinegar from Tunisian date juice, where ethanol and acetic acid were produced on an experimental scale (Louhichi et al, 2013;Matloob, 2014;Hamza et al, 2016).…”

Section: Tunisiamentioning

confidence: 99%

“…These dietary fibers can be used in healthy food products, such as baked goods, due to their distinctive flavor (Borchani et al, 2012;Mrabet et al, 2015). • Tunisia has made efforts to link research with datederived industries to manufacture these products on a commercial scale, thus imparting Tunisian dates an added value (Hamza et al, 2016;Ismail and Hassine, 2021).…”

Section: Tunisiamentioning

confidence: 99%

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Date-derived industries: A review of common products, manufacturing methods, and leading countries

et al. 2022

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The date fruit, a nourishing food appreciated worldwide, plays an important role in producing countries’ economic and political aspects. Date palms provide numerous products, including date syrup, alcohol, vinegar, date powder, and sugar. This review was undertaken to summarize information about the common date-derived products, the manufacturing methods used, and the leading countries in the date-derived industry. Additionally, the review highlights the future challenges in developing the date industry. The difficulties that accompanied the preparation of this review included the scarcity of modern and reliable information, especially the statistics related to date-derived products from leading countries involved in this industry. This may be due to the incompleteness of such information or the lack of interest in publishing them in reliable scientific sources.

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Section: Tunisiamentioning

confidence: 99%

Section: Tunisiamentioning

confidence: 99%

Section: Tunisiamentioning

confidence: 99%

Section: Tunisiamentioning

confidence: 99%

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Date-derived industries: A review of common products, manufacturing methods, and leading countries

et al. 2022

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“…However, there are some differences in taste and texture between primary and secondary date varieties [6]. Primary date varieties, such as Medjool and Deglet Noor, have a rich, sweet taste and a soft, chewy texture [7,8]. Both varieties are rich in phytochemicals including antioxidants such as phenolic acids, carotenoids, and flavonoids.…”

Section: Introductionmentioning

confidence: 99%

A Sustainable Approach for the Valorization of Underutilized Date Fruits

et al. 2023

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Secondary varieties of date fruits are often discarded because they do not have commercial value. However, their phytochemicals are very similar to those of the primary ones and therefore, they can be valorized as a source of compounds of interest, mainly phenols and dietary fiber. Their chemical composition changes with ripening, so their characterization throughout this process is of great significance. Date fruit samples were harvested at Khalal, Rutab, and Tamer stages, and a mixture of fruits from ornamental date trees was also analyzed. Aqueous and ethanolic extracts were studied for their phenolic composition. In aqueous extracts, phenols decreased with ripening, while in the ethanolic ones having higher phenolic content. Chelidonic acid, a γ-pyrone, was the major compound found in all extracts, but in the ethanolic ones, flavonoids were also present in similar amounts. After purification by adsorption chromatography, all extracts were assayed for their antimicrobial activity. Those from the Tamer stage showed the highest activity, especially against Gram-positive bacteria. The fibrous residues after aqueous and ethanolic extractions were also characterized. Their chemical composition suggested that they can be considered as a good source of prebiotic arabinoxylans and antioxidant fiber, whose antiradical activity correlated with their phenolic content. Date fruits from secondary varieties are promising as a worthwhile starting point for obtaining new value-added products.

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Study on the effects of pollen sources on the agronomic, biochemical, mineral, and pomological traits of date palm (Phoenix dactylifera L.) cv 'Deglet Nour' fruits in Degache Oases (Tunisia)

Kadri,

Jemni,

Mesnoua

et al. 2024

Genet Resour Crop Evol

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Given the dioecious nature of date palms, selecting an effective pollinizer bearing a substantial quantity of high-quality pollen is imperative. In this study, we investigated the effects of 11 male date palm cultivars from Tunisia on the production of female trees, fruit sets, and the characteristics of 'Deglet Nour' cultivar dates. The comparison of pollen germination rates showed that ABD1 and P169 pollens exhibited outstanding viability, with 98.7% and 98.3%, respectively. On the other hand, P169 pollen had the highest germination rate, at 86.3%. The most remarkable fruit set (90.7%) and retention rate (69.7%) were observed in response to P13 pollen. In response to the P165 pollinator, the fruit stood out among the resulting fruits for their notable weight, averaging 11.6 g. In addition, pollination with P90 increased total soluble solids (measured at 74.4°Brix in the Tamr stage), whereas P7-pollinated fruits recorded the highest levels of reducing sugars, reaching 41%. Notably, the highest acidity levels were found in P7-pollinated fruits (0.29%), and pollen sources significantly influenced the fruits' mineral content.Moreover, regarding pomological characteristics, fruits pollinated with P4 attained maximum size, measuring 4.10 cm. Conversely, P7-pollinated fruits had a notable width of 2.02 cm. These findings illustrate the possibility of the selective application of high-value pollinizers and emphasize the direct influence of pollen sources on fruit quantity and quality.

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Tunisian Date Cultivars: Economical Aspect, Physicochemical Properties, Sensory Characterization and Potential Valorization

Cited by 4 publications

References 24 publications

Date-derived industries: A review of common products, manufacturing methods, and leading countries

Date-derived industries: A review of common products, manufacturing methods, and leading countries

A Sustainable Approach for the Valorization of Underutilized Date Fruits

Study on the effects of pollen sources on the agronomic, biochemical, mineral, and pomological traits of date palm (Phoenix dactylifera L.) cv 'Deglet Nour' fruits in Degache Oases (Tunisia)

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