Efficient valorization of date fruit processing by-product through nano- and green-extraction technology: a response surface methodology-based optimization study

Hussein Mostafa, Marwa Hamdi, Jennifer Osamede Airouyuwa, Sajid Maqsood

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    In this study, the synthesis of date seed nanoparticles (SNPs) was investigated using the acid hydrolysis method. Afterwards, the potential extraction of phenolics from the synthetized SNP using microwave was studied using water and methanol as recovery solvents. To accomplish this, the experiments were operated at different conditions following the response surface methodology (RSM). For the synthesis of SNPs, HCl concentration (38%), hydrolysis time (4 days), microwave power (0.5 kW), methanol concentration (80%), and solid/water ratio of 40/1 (w/v) were the main independent factors promoting particle size reduction and maintaining maximum TPC and bioactivities. UHPLC profiling of SNP extracts allowed the identification of 8 phenolic compounds in the methanol-based MAE samples, while only 6 compounds were detected in the water-based MAE extracts. The major phenolic constituents detected in the SNPs were 3,4-dihydroxy benzoic acid, ferulic acid, and p-coumaric acid. Herein, a successful and suitable approach for date seed waste valorization was proposed through SNPs synthesis with enhanced TPC, TFC, and antioxidant activities, being noteworthy to be used in food applications. Graphical abstract: (Figure presented.)

    Original languageEnglish
    Pages (from-to)12857-12875
    Number of pages19
    JournalBiomass Conversion and Biorefinery
    Volume14
    Issue number12
    DOIs
    Publication statusPublished - Jun 2024

    Keywords

    • Antioxidant properties
    • Date seeds
    • Green technology
    • Microwave technology
    • Nanoparticles
    • Waste valorization

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment

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