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Stability of oil-in-water emulsions produced by membrane emulsification with microporous ceramic membranes
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- Zanatta, Vanessa (author)
- Federal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil
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- Rezzadori, Katia (author)
- Federal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil
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- Penha, Frederico Marques (author)
- Federal University of Santa Catarina, 88040-970, Florianópolis, SC, Brazil
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- ELSEVIER SCI LTD, 2017
- 2017
- English.
- In: Journal of Food Engineering. - : ELSEVIER SCI LTD. - 0260-8774 .- 1873-5770. ; 195, s. 73-84
- Journal article (peer-reviewed)
Abstract
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- Membrane emulsification has been drawing attention due to its many application possibilities. This study aimed to assess the preparation and stability of oil in water (O/W) emulsions by membrane emulsification technique. Microporous ceramic membranes with mean pore size 0.2 mu m and 0.8 mu m were used for producing sunflower oil in water emulsions, displaying mean droplet size ranging from 2.9 to 11.6 mu m and from 4.8 to 16.2 mu m, respectively. The effect of the oil concentration (10%-20%), surfactant concentration (1%-4%), tangential velocity (0.12 m s(-1) to 0.24 m s(-1)), and feed pressure (100 kPa-300 kPa) on the process performance was investigated using an experimental design. All the parameters significantly influenced the mean droplet size, the droplet size distribution, and the emulsion stability. Depending on the emulsification conditions, monodisperse and polydisperse emulsions were obtained. The use of a membrane with 0.2 mu m mean pore size led to better results than those obtained with a 0.8 mu m membrane, since they yielded emulsions displaying smaller droplet size and narrower size distribution. The emulsions prepared using this membrane were stable up to 100 days. (C) 2016 Elsevier Ltd. All rights reserved.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Livsmedelsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Food Engineering (hsv//eng)
Keyword
- O/W emulsions; Emulsification; Vegetable oil; Ceramic membranes
Publication and Content Type
- ref (subject category)
- art (subject category)
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