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https://open.uns.ac.rs/handle/123456789/13594
Назив: | Effects of xanthan gum on physicochemical properties and stability of corn oil-in-water emulsions stabilized by polyoxyethylene (20) sorbitan monooleate | Аутори: | Veljko Krstonošić Ljubica Dokić Petar Dokić Tamara Dapčević Hadnađev |
Кључне речи: | Emulsions;Xanthan;Depletion flocculation;Rheology;Stability | Датум издавања: | 1-дец-2009 | Часопис: | Food Hydrocolloids | Сажетак: | The influence of added xanthan gum on rheological and dispersion characteristics and stability of concentrated (50% w/w) corn oil-in-water emulsions, stabilized with 5% (percentage on oil amount) polyoxyethylene (20) sorbitan monooleate (Tween 80), have been investigated. Emulsion with no xanthan indicated coalescence and poor creaming stability. All emulsions, with and without xanthan, showed shear-thinning flow behavior. Addition of xanthan protected emulsions from coalescence during 15 days of storage. Increase in xanthan concentration led to decrease in droplet average radius and creaming index, and increase in elastic properties of emulsions. Decrease in the emulsions flow behavior indexes, which suggested the extent of non-Newtonian behavior of emulsions, was influenced by increase in xanthan concentration. Above 0.04% of xanthan concentration, G′ and G″ values indicated formation of weak gels. Gel structure existence arises from droplet network association, due to depletion flocculation. Standard deviation of emulsions droplet size mean diameter decreased while concentration of added xanthan increased. © 2009 Elsevier Ltd. All rights reserved. | URI: | https://open.uns.ac.rs/handle/123456789/13594 | ISSN: | 0268005X | DOI: | 10.1016/j.foodhyd.2009.05.003 |
Налази се у колекцијама: | FINS Publikacije/Publications TF Publikacije/Publications |
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