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This study has been conducted to determine and identify the metal elements of dates syrup extracted from Khstawy, Zehdy and Shukary using Scanning electron microscope-Energy dispersive Spectrometer (SEM-EDS) technique. The results showed that dates syrup was rich in both metal and non- metals elements. The obtained results showed some different trends in the date syrup content of mineral elements. The results showed the availability of Carbon (C) element in dates syrup extracted via hydraulic pressure from Khstawy (80.73%), Zehdy (65.28 %) and Shukary (68.49%) varieties while in dates syrup produced thermally (80.59%) and dates syrup produced without thermal (72.16%). Oxygen (O) ratio in Khstawy, Zehdy, Shukary, dates syrup produced thermally, and dates syrup produced without thermal were 18.92, 35.27, 15.26, 19.09 and 27.46 respectively. Moreover, the results showed the availability of sodium (Na) (0.17 %), sulphur (S) (0.11 %), potassium (K) (0.05%), silicon (Si) (0.03%) in the dates syrup extracted from Khstawy, while in Zehdy variety there was Aluminum (Al) (0.33%), potassium (K) (0.08%), chloride (Cl) (0.03%), magnesium (Mg) (0.01%). In Shukary variety, Al (5.24%), K (0.05%), nitrogen (N) (10.73%), (S) (0.06%), copper (Cu) (0.18%). Additionally, the results showed that the quantity of metal elements available in dates syrup produced thermally were found as follow as follows: Na (0.22%), S (0.1%) as well as O and C. Yet, the number of the metal elements in the dates syrup produced by hydraulic pressure was more that the dates syrup produced thermally are as follows: Na (0.1%), Al (0.1%), K (0.1%), S (0.02%), Si (0.03%) and phosphor (P) (0.02%).

Keywords: Cinnamomum zeylanicum, essential oil, antibacterial activity

The present study explored the hydraulic pressure process as an alternative process to the conventional extraction of date honey. In this regard, response surface methodology (RSM) and central composite design (CCD) were utilized as process optimization tools to achieve the highest yield and efficiency. Independent processing parameters were temperature (50–60°C) and pressure (4–12 bar). Moreover, the effect of optimum conditions on the quality and active compounds of date honey were studied. The results showed that the optimum conditions to give the highest yield (45.83%) and extraction efficiency (87.99%) were a temperature of 60°C and a pressure of 8.83 bar with a come‐up time of 6 hr. The pH values of extracted date honey were higher than the conventional method. The change in pH values was described using the first‐order kinetic equation. While moisture content and acidity were significantly lower than the conventional method, hydraulic pressure increased the ash, protein, total sugar, reduced sugar, pectin, and total soluble solids. The valorization approach developed in this study provides a platform for producing high‐quality date honey as a value‐added product from an underutilized date. The findings can help with enhancing resource efficiency through agricultural waste valorization. Practical Applications Hydraulic press extracted the date honey at a pilot scale and showed good potential for further upscaling. This method addressed a significant concern of conventional extraction, that is, quality deterioration. In addition, the hydraulic press enhanced the extraction yield and process efficiency. Furthermore, results elaborated on the effects of processing parameters. Such approaches can be used in the industry to enhance resource efficiency and to help with achieving sustainable development goals (SDGs).

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