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    Influence of different concentrations (0.5, 1.0, 2.0, and 3.0% w/v) and temperatures (4, 25, 50, and 75°C) on particle size distribution (PSD) and rheological and tribological characteristics of flaxseed gum (FSG) solutions was investigated. Besides, FSG dispersions (0.5, 1.0, and 2.0% w/v) were used as edible coating and their influence on the quality parameters (oil uptake, moisture loss, texture, and sensory properties) of fried potato chips was studied. All FSG dispersions revealed shear-thinning nature and viscous properties (as G″ > G') that were more dominant at higher concentrations and lower temperatures. The power-law model presented a good fit in demonstrating the flow behavior of FSG dispersions. Concentration was the variable that affected the tribology of FSG dispersions, while temperature had little effect on the tribology. Particle size distribution was increased with the increasing concentration of FSG. FSG dispersions as an edible coating effectively reduced the moisture loss, oil uptake, and hardness properties of potato chips. Practical Application Profiling the influence of concentration and temperature on the rheology and tribology of flaxseed gum is particularly valuable during food processing. The results predict the physical properties of coated potato chips that can support the potential application of flaxseed gum as a coating agent. Today's consumers prefer healthier food products with low caloric, higher fiber content, functional properties, and sensory qualities. Food industries can use FSG as a low-cost natural coating material in terms of economic benefits, consumer acceptance, and providing an inordinate potential both for its protective effect and carrying functional compounds such as antioxidants in their coating matrix. © 2022 Institute of Food Technologists®.


    Bushra Safdar, Zhihua Pang, Xinqi Liu, Mushtaque Ahmad Jatoi, Muhammad Tayyab Rashid. Rheological and tribological nature of flaxseed gum influenced by concentration and temperature and its application as a coating agent for potato chips. Journal of food science. 2022 May;87(5):2058-2071

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    PMID: 35411576

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