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  • Title: Mitigation effect of sodium alginate on acrylamide formation in fried potato chips system based on response surface methodology.
    Author: Liu H, Li X, Yuan Y.
    Journal: J Food Sci; 2020 Aug; 85(8):2615-2621. PubMed ID: 32691421.
    Abstract:
    Acrylamide is a known neurotoxin and probable carcinogen in humans. Researchers reported that foods rich in carbohydrates could generate high amounts of acrylamide at high temperatures. In recent years, hydrocolloids are applied to reduce acrylamide in thermally processed foods and the effect has been well proved. The present work was to investigate the effect of sodium alginate as the coating agent on acrylamide formation in fried potato chips by a Box-Behnken design. The optimized processing conditions were: sodium alginate at the concentration of 1.34%, frying time at 4.38 min, and frying temperature at 179 °C. The corresponding inhibition rate of acrylamide was 76.59%. Compared to the control group, the oil absorption of coating chips decreased significantly, whereas the addition of sodium alginate did not affect the quality of potato chips. Scanning electron microscope analysis revealed that coating with sodium alginate could effectively prevent oil uptake, which might contribute to acrylamide mitigation. Overall, sodium alginate significantly mitigated acrylamide formation in fried potato chips. PRACTICAL APPLICATION: Sodium alginate could significantly reduce acrylamide formation in fried potato chips systems. Sodium alginate may therefore be a new mitigation strategy for acrylamide formation in commercial fried foods without prejudice to main quality properties valued by consumers.
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