Introduction: This study aims to investigate the conversion of soft cultivar dates (Ghars) into nutrient-rich raw syrup, focusing on preserving its nutritional value and evaluating its potential as a bio-based product with health benefits. Methods: The syrup was produced using technological processing to maintain nutritional integrity. Biochemical and phytochemical compositions were analyzed, alongside antioxidant and antimicrobial properties. Trace metal elements (copper (Cu), cadmium (Cd), cobalt (Co), nickel (Ni), lithium (Li), chromium (Cr)) were quantified via atomic absorption spectrophotometry. High-performance liquid chromatography (HPLC) was used to assess sugar content. Antioxidant activity was measured through inhibition rates and IC50 values, while antimicrobial activity was tested against Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Bacillus subtilis, and Pseudomonas aeruginosa using the agar diffusion method. Results: Trace metal levels were within safe limits. Biochemical analysis revealed triglyceride levels of 0.014% ± 0.015 to 0.027% ± 0.001, with no detectable cholesterol (< 0.007%). HPLC confirmed the absence of sucrose, with fructose and glucose in a 2:3 ratio. The syrup exhibited strong antioxidant activity (inhibition rates: 87.2%–89.476%; IC50: 1–2.22 mg/mL). Concentrated syrup (750 mg/mL) showed significant antibacterial activity against all tested pathogens. Discussion: The findings align with existing research on date-derived products, highlighting the syrup’s potential in combating oxidative stress and microbial infections. Limitations include the need for broader microbial testing. Future research should explore clinical applications. Conclusion: The converted date syrup is a promising bio-based product with antioxidant and antimicrobial properties, offering potential for cardiovascular and diabetes management and bio-refinery applications.
Mimouni et al. (Wed,) studied this question.