High-intensity ultrasound-modified Jerusalem artichoke leaf protein for stabilizing corn oi-in-water emulsion and Enhacing curcumin delivery

• Published in: Food chemistry 2025-01, Vol.463 (Pt 2), p.141240, Article 141240
• Main Authors: Huang, Dongjie, Hao, Rili, Zhang, Wenyuan, Liu, Yiyan, Lin, Xinru, Song, Weixuan, Jiang, Yang, Sun-Waterhouse, Dongxiao, Li, Dapeng
• Format: Article
• Language: English
• Subjects: Corn Oil - chemistry; Curcumin - chemistry; Delivery; Drug Delivery Systems; Emulsion; Emulsions - chemistry; Helianthus - chemistry; Hydrophobic and Hydrophilic Interactions; Jerusalem artichoke; Plant Leaves - chemistry; Plant Proteins - chemistry; Protein; Solubility; Ultrasonic; Ultrasonic Waves; Water - chemistry; Zea mays - chemistry
• ISSN: 0308-8146; 1873-7072; 1873-7072
• DOI: 10.1016/j.foodchem.2024.141240

Jerusalem artichoke leaf protein (JALP) has limited applications because of its dark color, even though Jerusalem artichoke is a cash crop. This study utilized high-intensity ultrasound (HIUS) (≤ 600 W) to modify the physicochemical characteristics and functional properties of JALP. Compared with the JALP, all the HIUS-treated JALP (UJALP) samples had a lighter brown color, higher absolute ζ-potential value, lower Z-average size, higher surface hydrophobicity, higher water solubility, lower turbidity, more -SH group, and higher water-holding, oil-holding, emulsifying and foaming capacities. The HIUS treatment disrupted certain non-covalent and SS bonds, promoted protein depolymerization, change protein secondary structures, causing partial unfolding of protein and exposure of some charged groups, hydrophobic groups and chromophores (like tryptophan and tyrosine). The UJALP-stabilized corn oil-in-water emulsions (UJALPEs) were more stable than the JALP-stabilized emulsion (JALPE). The bioaccessibility of curcumin in the JALPE (56.38 %) was significantly lower than in the UJALPE-600 W (64.59 %). [Display omitted] •The ultrasound affected the structure of Jerusalem artichoke leaf protein (JALP).•The structural changes of JALP improved its functional properties.•The ultrasonically modified JALP emulsion exhibits excellent stability.•Curcumin was more effectively protected in UJALPE-600 W.