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  • Title: Comparison of the effect of vegetable oil and oleogels with different unsaturation on gel properties of Nemipterus virgatus surimi.
    Author: Mi H, Tan M, Li J, Li X, Chen J.
    Journal: Food Chem; 2025 Jan 15; 463(Pt 2):141259. PubMed ID: 39278083.
    Abstract:
    The effect of oleogels prepared using γ-oryzanol, β-sitosterol and vegetable oils with different unsaturation on the gel properties of surimi was compared. The findings from SEM and optical microscopy demonstrated that direct addition of vegetable oils caused loose surimi gel three-dimensional network structure, which negatively impacted the water holding capacity (WHC) and texture properties. However, oleogels increased the hydrophobic interaction and disulfide bond content, facilitated the transition from α-helix to β-sheet, improving the WHC and gel strength of surimi. Among them, the surimi containing oleogels prepared by linseed oil with the highest polyunsaturated fatty acid (PUFA) content had the highest gel strength and WHC, which were 3936.067 g·mm and 66.77 %, respectively. The results of microstructure showed that linseed oil based oleogels were able to fill the gaps of gel network more uniformly with smaller holes. Therefore, oleogels enriched with PUFA were more effective in enhancing the gel properties of surimi.
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