Document Detail


Microfluidic production of spherical and non-spherical fat particles by thermal quenching of crystallizable oils.
MedLine Citation:
PMID:  24000772     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We report the microfluidic production of spherical and non-spherical fat particles from crystallizable oils. The method is based on microfluidic generation of oil droplets at a cross-junction followed by thermal solidification downstream in a microcapillary. We vary the drop production conditions and the device temperature and demonstrate that the size, shape and crystallinity can be controlled. By measuring thermal gradients in the microcapillary, we show that crystalline fat particles are best produced when the device temperature is below the onset temperature of bulk fat crystallization. To produce monodisperse non-spherical fat particles, we find that the carrier fluid flow rate needs to be sufficiently high to provide strong hydrodynamic forces to transport the confined rod-like particles. We identify the scaling relationship between geometric confinement and particle elasticity necessary to maintain the non-spherical shape. Thus, our study provides guidelines for the production of spherical and non-spherical fat particles that can be potentially used for controlling microstructure, rheology and drug encapsulation in foods, cosmetics and pharmaceutical creams that employ crystallizable oils.
Authors:
Jihye Kim; Siva Vanapalli
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-9-3
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  -     ISSN:  1520-5827     ISO Abbreviation:  Langmuir     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-9-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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