Technological Studies on Aswan Dry Dates Products After Dehydration

Abstract

Sakkoti, Bartamuda, Gondaila, Malkabii and Shamia are excellent dry date cultivars, grown at Aswan Governorate. This study was conducted to assay effect of drying methods on quality of dates products so, total soluble solids (T.S.S.), pH, acidity, color characteristics and Organoleptic characteristics were determined in prepared date products (Tamr-Elddin Date Sheets (TDS) [with / without] fiber, Date pudding and Date Jelly) from fresh date fruit (Tamar), after sundrying for 25 days, solar drying for 14 days at ambient temperature 50°C and mechanical drying at 60°C for 9 hrs. The obtained results showed that pH decreased after sun-drying and mechanical drying, while total soluble solids (T.S.S) and acidity increased for all date products also, in generally found that the lightness (L), a (redness) and yellowness (b) values for date products from fresh dates were higher than solar dried dates, followed by sun dried dates and mechanical dried dates. So, in this study found that drying process by solar energy improved qualities attribute of all date products that had processed from Aswan dry dates.

The Mathematical Modeling, Diffusivity, Energy, and Enviro-Economic Analysis (MD3E) of an Automatic Solar Dryer for Drying Date Fruits

“…The initial moisture content in dry basis in Sakkoti, Malikabii, and Gondila prior to the drying process was 17.64%, 14.89%, and 15.68%, respectively, while the final moisture content was 6.06%, 5.56%, and 6.58% in dry basis in Sakkoti, Malikabii, and Gondila, respectively, as shown in Figure 3. Elghazali et al [109,110] stated that the MC (d.b.) of fresh and dried date varieties Sakkoti, Bartamuda, Gondaila, Malikabii, and Shamia was 18.28% and 4.16%, 19.49% and 3.25%, 14.38% and 3.35%, 13.47% and 3.48%, and 17.20% and 4.93%, respectively.…”