Browsing by Author "Narimen Boudjouraf"

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    Gestion Et Valorisation Des Déchets De Pomme Dans La Wilaya De Khenchela
    (UNIVERSITE ABBES LAGHROUR KHENCHELA, 2025-06-22) Narimen Boudjouraf
    pple residues studied in this research are abundant and represent a locally available low-cost resource in the wilaya of Khenchela. This study aims to extract pectin, an important and valuable substance used in the food industry, from apple residues (barks and seeds) using ultrasound-assisted extraction in an acidic medium. Two apple varieties, Golden Delicious and Granny Smith, were compared. Results indicate that pectin from seeds is highly esterified (DE > 50%) and suitable for gelation in sweet products, whereas pectin from peels is less esterified and more appropriate for low-sugar products. FTIR analysis showed chemical differences depending on apple variety and residue part, affecting functional and biological properties such as antioxidant and anti-inflammatory activities. This research highlights the potential for sustainable valorization of biological residues in food industry applications.