Cryoprotective effect of soybean oil on surimi gels and the mechanism based on molecular dynamics simulation

IF 2.8 3区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

Journal of texture studies Pub Date : 2023-11-15 DOI:10.1111/jtxs.12812

Zhiwen Shen, Huaqian Gao, Wanqi Peng, Faxiang Wang, Yongle Liu, Jinhong Wu, Shaoyun Wang, Xianghong Li

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Abstract

The effect of soybean oil (SO) on freeze-thaw (F-T)-treated surimi was investigated and its related mechanism was revealed by molecular dynamics (MD) simulations. The results displayed that SO has a disrupting effect on the structure of fresh samples. However, in the F-T-treated samples, surimi gels supplemented with SO had a more uniform microstructure. Simultaneously, when SO was added from 0% to 7% in the F-T-treated samples, the gel strength increased from $46.66 to 51.86 N \cdot mm$ (p < .05), the physically bound water was increased from 92.90% to 94.15% (p < .05), and storage modulus was increased from 5939 to 6523 Pa. Triglycerides of SO generated hydrophobic interactions with myosin mainly in carbon chains. Computational results from MD simulations illustrated that the structure of myosin combined with triglycerides was more stable than that of myosin alone during temperature fluctuations (−20 to 4°C). During ice crystal growth, triglycerides absorbed on the myosin surface inhibited the growth of surrounding ice crystals and mitigated the ice crystal growth rate (from 7.54 to 5.99 cm/s). The addition of SO during the F-T treatments allowed myosin to be less negatively affected by ice crystal formation and temperature fluctuations and ultimately contributed to the formation of a more uniform network gel structure.

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基于分子动力学模拟的大豆油对鱼糜凝胶的冷冻保护作用及其机理。

研究了大豆油(SO)对冷冻解冻(F-T)处理鱼糜的影响，并通过分子动力学模拟揭示了其相关机理。结果表明，SO对新鲜样品的结构有破坏作用。然而，在f -t处理的样品中，添加SO的鱼糜凝胶具有更均匀的微观结构。同时，从0加入SO% to 7% in the F-T-treated samples, the gel strength increased from 46.66 to 51.86 N · mm $$ 46.66\ \mathrm{to}\ 51.86\;\mathrm{N}\cdotp \mathrm{mm} $$ (p

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来源期刊

Journal of texture studies 工程技术-食品科技

CiteScore

6.30

自引率

9.40%

发文量

审稿时长

>24 weeks

期刊介绍： The Journal of Texture Studies is a fully peer-reviewed international journal specialized in the physics, physiology, and psychology of food oral processing, with an emphasis on the food texture and structure, sensory perception and mouth-feel, food oral behaviour, food liking and preference. The journal was first published in 1969 and has been the primary source for disseminating advances in knowledge on all of the sciences that relate to food texture. In recent years, Journal of Texture Studies has expanded its coverage to a much broader range of texture research and continues to publish high quality original and innovative experimental-based (including numerical analysis and simulation) research concerned with all aspects of eating and food preference. Journal of Texture Studies welcomes research articles, research notes, reviews, discussion papers, and communications from contributors of all relevant disciplines. Some key coverage areas/topics include (but not limited to): • Physical, mechanical, and micro-structural principles of food texture • Oral physiology • Psychology and brain responses of eating and food sensory • Food texture design and modification for specific consumers • In vitro and in vivo studies of eating and swallowing • Novel technologies and methodologies for the assessment of sensory properties • Simulation and numerical analysis of eating and swallowing