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Firmness and calyx covering an arsenal against Oryzaephilus surinamensis (Linné, 1758) (Coleoptera: Silvanidae) infestation in stored dates (Phoenix dactylifera L.)

100%
Buba M., Zakka U.
World News of Natural Sciences
|
2018
|
vol. 19
9-18
EN
Three date cultivars were sourced from the open market, sterilized and infested with Oryzaephilus surinamensis L. in a no-choice infestation experiment to determine emergence and weight loss. Emergence of O. surinamensis in Jigawa cultivar with and without calyx was significantly higher (P≤0.05) than emergence in Mali and Deglet Noor with and without calyx, just as emergence in Mali cultivar without calyx was significantly (P≤0.05) higher than emergence in Deglet Noor with and without calyx. Based on cultivar, Deglet Noor gave the least emergence of O. surinamensis, with the highest in Jigawa cultivar. There was a highly significant (P≤0.05) weight loss in Jigawa date cultivar compared with weight loss in both Deglet Noor and Mali date cultivars. Moreover, dates without calyx had significantly higher (P≤0.05) weight loss compared with dates with calyx. Finally, pulpy dates appeared to be the most susceptible cultivars, whereas firm dates were the least susceptible date cultivars. Conclusively, the results showed that Deglet Noor cultivar with calyx had the least emergence of O. surinamensis, as well as loss in weight, and is, therefore, recommended to store-owners for prolonged storage.
2
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Investigating the Proximate, Ultimate and Chemical Composition of Four Cultivars of Date Seed, Phoenix dactylifera L.

88%
Nwaokobia K., Ogboru R. O., Idibie C. A.
World News of Natural Sciences
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2018
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vol. 18
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issue 2
52-61
EN
Proximate, ultimate and chemical composition of four varieties of dates, namely Digila, Krikri, Sukur and Trigal were determined in the pulp. In addition, the seed kernel of dika nut (Irvingia gabonensis) was assessed on a dry weight basis. The proximate analysis included moisture, volatile matter, Fixed Carbon and ash, respectively, with the pulp of Digila having the highest fixed carbon of 72.73%, while the krikri date pulp contained the highest moisture of 79.22%, Sukur pulp has the highest volatile matter of 59.20%, and Trigal seed contained 88.05% moisture - establishing that its kernel holds the highest moisture content among the four cultivars. Ultimate Analysis showed that Digila and Trigal pulp contained the same amount of total carbon (94.10%), the pulp of Krikri contained the highest amount of hydrogen (3.55%), while the pulp of Sukur has 1.44% Nitrogen, and the dika nut seed contained 9.82% Oxygen - making it the highest. Moreover, Sulpur, Digila, Sukur, Trigal and Krikri have available hydrogen, nitrogen, oxygen, sulphur, sodium, potassium, calcium, magnesium, iron, zinc and phosphorus for the body to absorb for physiological activities, but lacked chlorine, aluminum, and silicon at detectable levels. All these quality food properties make dates a good source of sweetening agent in the food processing industry.
3
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A Review on phytochemistry of Phoenix dactylifera L. fruits and seeds (Date Palm)

88%
Benchilo B., Roja K., Agastian P.
World News of Natural Sciences
|
2024
|
vol. 52
23-33
EN
Phoenix dactylifera are known for their abundance of phytochemicals, including phenolics, anthocyanin, carotenoids, tocopherols, phytosterols, and dietary fibre. These phytochemicals have been associated with various biological activities, such as antioxidant, antibacterial, anti-inflammatory, prebiotic, anticancer, and antitoxic properties. Consequently, date fruits have been utilized in the prevention and management of prevalent diseases, such as diabetes, cancer, and gastrointestinal, cardiovascular, and neurodegenerative diseases, particularly in industrialized nations. Phoenix dactylifera possesses a wide range of pharmacological effects, which can be attributed to the presence of several potent and advantageous chemicals such as flavonoids, vitamins, minerals, amino acids, sterols, fatty acids, and organic acids. Hence, the purpose of this review is to examine the phytochemical composition of Phoenix dactylifera L. This investigation aims to facilitate further research on the specific compounds found in this plant species, with the intention of benefiting human health. Additionally, it seeks to promote the cultivation of Phoenix dactylifera as a means of ensuring sustainability for future generations.
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