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Physical Stability of Spray‐Dried Milk Fat Emulsion as Affected by Emulsifiers and Processing Conditions
Author(s) -
Danviriyakul S.,
McClements D.J.,
Decker E.,
Nawar W.W.,
Chinachoti P.
Publication year - 2002
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2002.tb09524.x
Subject(s) - emulsion , particle size , spray drying , oil droplet , globules of fat , materials science , particle (ecology) , fat emulsion , milk fat , food science , chemistry , chemical engineering , chromatography , organic chemistry , linseed oil , medicine , parenteral nutrition , oceanography , intensive care medicine , engineering , geology
The effects of emulsifiers, wall, carbohydrate, and processing conditions on the physical properties of encapsulated powders were studied. Unstable emulsion causes an increase in the surface fat of spray‐dried powder. Surface fat decreased with increasing DE and was unaffected by drying outlet temperature. A seven‐fold decrease in surface fat was observed when the oil droplet size increased from 0.5 to 1.2 μm. At best, about 98% of the milk fat was encapsulated. Powder average particle size changed with outlet air temperature, oil droplet size, and DE. Particles contained air cells with some large voids and more spherical shape for 36 DE but dented and irregular shape for 10 DE.