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Improvement of water barrier properties of starch films by lipid nanolamination

Paper ID Volume ID Publish Year Pages File Format Full-Text
19821 43132 2016 6 PDF Available
Title
Improvement of water barrier properties of starch films by lipid nanolamination
Abstract

•Nanolaminated films were formulated by coating starch films with lipids nanolayers.•SEM images indicate that nanolayer present thickness with nanoscale dimensions.•Nanolayer incorporation improves water barrier properties of starch films.•Nanolayers decrease moisture sorption of starch films.

A nanolaminate consists of two or more layers of material with nanometric dimensions that are physically or chemically bonded to each other. Starch based edible films present suitable characteristics for food protection, but their functional properties are affected by film water content. Nanolaminated films were formulated by coating the starch film with lipid nanolayers in order to improve their water resistance and barrier properties. Lipid nanolayer presence was confirmed by SEM images and contact angle measurements. Sorption isotherms of nanolaminated films showed an important reduction in film water adsorption through all the aw range studied. The effect on permeability of the driving force (aw difference) and the aw values at each side of the film, were analysed. Water vapour transport was controlled by water diffusion through hydrophobic nanolayers. Nanolamination of edible films improved the water barrier properties of hydrophilic films by combining starch with lipids materials at nanometric scale.

Keywords
Nanolaminated film; Starch matrix; Lipid nanolayer; Sorption isotherm; Water vapour permeability
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food Packaging and Shelf Life - Volume 7, March 2016, Pages 41–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us