Effect of Dehydration Methods on Physicochemical Properties of Aswan Dry Dates | ||
| Assiut Journal of Agricultural Sciences | ||
| Article 4, Volume 51, Issue 4, December 2020, Pages 50-64 PDF (987.44 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajas.2020.147566 | ||
| Abstract | ||
| Sakkoti, Bartamuda, Gondaila, Malkabii and Shamia are excellent dry date cultivars, grown at Aswan Governorate. Physical properties {Gross fruit weight, Date flesh (pulp) weight, Date seed weight, Date flesh (pulp) percent, Average length, Average diameter, Date number per 1 kg, Date fruit volume and Date fruit density} also chemical composition {moisture, protein, Crude fiber, lipids, ash, Carbohydrates, sugars (reducing, non-reducing, Total sugar, Sucrose, Glucose and Fructose), minerals contents (Macro- and micro-elements), vitamins content (A, E and C), pH, Acidity and Total soluble solids } were determined in fresh date fruit (Tamar), after sun-drying for 25 days, solar drying for 14 days at ambient temperature 50 °C and mechanical drying at 60°C for 9 hrs. Moisture, lipids, protein, ash and pH decreased after sun-drying and mechanical drying, while total soluble solids (T.S.S), Carbohydrates, crude fiber and acidity increased in all cultivars. Total sugars, non-reducing sugar, Sucrose and Fructose were higher in content in Malkabii date fruit (Tamar) than the other date varieties while, reducing sugar and Glucose were higher in Gondaila than the other date varieties. After, drying process, all sugar fractions decreased. Potassium and Calcium contents were higher in all dates. Vitamins A and E were higher in Shamia and Bartamuda than the other date variety. Also, the solar drying method was the best method used for drying dates. | ||
| Keywords | ||
| Date fruit; Sakkoti; Bartamuda; Gondaila; Malkabii | ||
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