Elghazali, M., Tawfeuk, H., Ali, M., Osman, A. (2023). Chemical Composition and Sugars Profile of Aswan’s Dry Dates Varieties as Affected by Sun Drying, Storage and Harvesting Time. Aswan University Journal of Environmental Studies, 4(5), 333-343. doi: 10.21608/aujes.2023.228916.1184
Mohamed Nagati Elghazali; Hesham Zakaria Tawfeuk; Mostafa Ahmed Ali; Amna Abul-Kasem Osman. "Chemical Composition and Sugars Profile of Aswan’s Dry Dates Varieties as Affected by Sun Drying, Storage and Harvesting Time". Aswan University Journal of Environmental Studies, 4, 5, 2023, 333-343. doi: 10.21608/aujes.2023.228916.1184
Elghazali, M., Tawfeuk, H., Ali, M., Osman, A. (2023). 'Chemical Composition and Sugars Profile of Aswan’s Dry Dates Varieties as Affected by Sun Drying, Storage and Harvesting Time', Aswan University Journal of Environmental Studies, 4(5), pp. 333-343. doi: 10.21608/aujes.2023.228916.1184
Elghazali, M., Tawfeuk, H., Ali, M., Osman, A. Chemical Composition and Sugars Profile of Aswan’s Dry Dates Varieties as Affected by Sun Drying, Storage and Harvesting Time. Aswan University Journal of Environmental Studies, 2023; 4(5): 333-343. doi: 10.21608/aujes.2023.228916.1184
Chemical Composition and Sugars Profile of Aswan’s Dry Dates Varieties as Affected by Sun Drying, Storage and Harvesting Time
1Department of Food Science and Technology Faculty of Agriculture and Natural Resources Aswan University
2Department of Food Science and Technology Faculty of Agriculture and Natural Resources, Aswan University
3Department of Food Science and Technology, Faculty of Agriculture and Natural Resources, Aswan University, Egypt
4department of food science and technology, faculty of agriculture and natural resources. Aswan university
Abstract
This study was carried out on five varieties of dry date fruits, Sakkoti, Bartamuda, Gondaila, Malkabii and Shamia, which are the most common and popular dry date fruits cultivated in Aswan Governorate. Sun drying process was applied as a cheap and easy preservation technique. The gross chemical composition (Moisture, protein, crude fiber, fat, ash, carbohydrates, sugars such as reducing, non-reducing, total sugar, sucrose, glucose and fructose) of date fruit samples were investigated in fresh date fruit at tamar stage, and in date fruit after sun drying for 25 days at maximum temperature about 40°C, then storage at ambient temperature for (12 months), during two harvesting seasons (2020 and 2021). Moisture, fat, protein and ash contents were decreased after sun drying, while avaliable carbohydrates and crude fiber were increased in all cultivars. Glucose, fructose and sucrose are the most abundant sugars in all cultivars, that’s making them a rich source of energy for the human system. Total sugars, non-reducing sugar, sucrose, and fructose content was higher in Malkabii date fruit (Tamar) than others date cultivars, while reducing sugar and glucose content was higher in Gondaila date fruit (Tamar) than others date cultivars. After sun drying process, all parts of the sugar are reduced.
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