Faculty of Agriculture, Department of Food Science and Technology, University of Tabriz, Tabriz, Iran.
Faculty of Engineering, Department of Food Engineering, Near East University, Mersin, Turkey.
J Texture Stud. 2018 Oct;49(5):536-547. doi: 10.1111/jtxs.12352. Epub 2018 Jul 30.
The effects of Plantago major seed (PMS) gum on the rheological properties of the sunflower oil-based emulsions (steady shear flow and dynamic oscillatory rheology) were investigated. The results of steady shear flow experiments showed that the shear stress-shear rate, apparent viscosity-shear rate, and shear stress-time data were well fitted with Herschel-Bulkley, Carreau, and Tiu-Bogar models, respectively, and showed the highest R and the lower root mean square error within different models. The strain and frequency sweep data indicated that all emulsions showed weak gel-like behavior, which showed stable interactions and entanglements in the emulsion structure. CoX-Merz rule was applied to investigate the relationship between complex viscosity (η*) and apparent viscosity (η ). In all emulsions containing PMS gum, η* > η and they did not obey from this rule.
The rheological properties of emulsion are critical features in stabilization of emulsion based products. The PMS gum can potentially be used in producing and stabilization of emulsion based products and effects of this gum on in oil in water emulsion can be useful in development of plant originated hydrocolloids in foods.
研究了车前子种（PMS）胶对葵花籽油基乳液（稳态剪切流和动态振荡流变学）流变性质的影响。稳态剪切流实验结果表明，剪切应力-剪切速率、表观粘度-剪切速率和剪切应力-时间数据分别很好地符合 Herschel-Bulkley、Carreau 和 Tiu-Bogar 模型，在不同模型中表现出最高的 R 和较低的均方根误差。应变和频率扫描数据表明，所有乳液均表现出弱凝胶行为，这表明乳液结构中存在稳定的相互作用和缠结。应用 CoX-Merz 法则研究了复合粘度（η*）与表观粘度（η）之间的关系。在含有 PMS 胶的所有乳液中，η* > η，并且它们不遵循该规则。
乳液的流变性是乳液基产品稳定的关键特征。PMS 胶可潜在地用于生产和稳定乳液基产品，并且该胶对油包水乳状液的影响可有助于开发食品中植物源水胶体。
