UTILIZATION OF AGRO-INDUSTRIAL WASTE FOR DATE PALM AS LOW-COST BY-PRODUCTS AND HIGH NUTRITIONAL VALUE. | ||||
| Minia Journal of Agricultural Research and Development | ||||
| Volume 44, Issue 2, June 2024, Page 297-314 PDF (487.86 K) | ||||
| Document Type: Original Articles | ||||
| DOI: 10.21608/mjard.2024.392309 | ||||
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| Abstract | ||||
| The goal of the current study was to assess the nutritional value, antioxidant content and antioxidant activity of date kernels and palm fronds and their effect on oil stability. Total phenolic compounds, tannins and αtocopherol were determined and DPPH radical-scavenging activity was examined. Polyphenolic substances were identified by HPLC. BHT and tannic acid as synthetic antioxidant agents, in addition to aqueous and ethanolic extracts of date kernels and palm fronds, as natural antioxidants were added to edible mixed oil at concentrations of 100, 200 and 500ppm and heated daily at 80°C for 5 hours for 7days, then the stability of oil was assessed by acid value, peroxide value, TBARS and iodine number. The Economics of date palm kernel waste also was evaluated. The findings showed that date kernels had greater total phenol content than those of date palm fronds and palm fronds also had much higher concentrations of tannins and tocopherol. According to HPLC-based polyphenol fractionation, vanilne, resorcinol and syringic acid made up the bulk of palm fronds. The findings suggested that the heat stability of both synthetic and natural antioxidants improved the stability and properties of oil after being heated daily at 80°C, for 5 hours for 7 days. The present study concluded that adding natural antioxidants obtained from date kernels and palm frond could lengthen the shelf life of oil. They were also risk-free and have numerous dietary applications, as alternative natural antioxidants | ||||
| Keywords | ||||
| Date kernels; Palm fronds; Antioxidants; Total phenols; HPLC | ||||
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