Advantages and challenges of Pickering emulsions applied to bio‐based films: a mini‐review

The strategy of adding hydrophobic compounds to bio‐based films (usually based on hydrophilic matrices), forming films containing emulsions, is a technique that has been used to improve some physical properties (such as reducing water solubility and water vapor permeability) and / or to impart prope...

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Bibliographic Details
Published in:Journal of the science of food and agriculture 2021-07, Vol.101 (9), p.3535-3540
Main Authors: Niro, Carolina M, Medeiros, Jackson A, Freitas, John AM, Azeredo, Henriette MC
Format: Article
Language:English
Subjects:
active properties
Antiinfectives and antibacterials
Antioxidants
bio‐based films
Drying
Emulsions
Hydrophilicity
Hydrophobicity
Permeability
Physical properties
Pickering emulsion
Stability
Tensile properties
Water vapor
water vapor permeability
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Summary:The strategy of adding hydrophobic compounds to bio‐based films (usually based on hydrophilic matrices), forming films containing emulsions, is a technique that has been used to improve some physical properties (such as reducing water solubility and water vapor permeability) and / or to impart properties, such as antioxidant and antimicrobial effects by carrying hydrophobic active components that would otherwise be insoluble in hydrophilic matrices. Although Pickering emulsions have been reported as presenting greater stability when compared with surfactant‐stabilized emulsions, little is known about the drying stability of Pickering emulsions (which is important for film applications). Anyway, several studies have indicated that Pickering emulsions are interesting systems to improve the water vapor barrier properties of bio‐based films and coatings, and to act as carriers of active hydrophobic components. On the other hand, the tensile properties of those films are usually impaired by the presence of Pickering emulsions. The objective of this review is to present recent developments and future perspectives in bio‐based films loaded with Pickering emulsions. © 2020 Society of Chemical Industry
ISSN:0022-5142
1097-0010
DOI:10.1002/jsfa.11029