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Physico-chemical properties of edible films derived from native and phosphated cush-cush yam and cassava starches

Paper ID Volume ID Publish Year Pages File Format Full-Text
19834 43134 2015 8 PDF Available
Title
Physico-chemical properties of edible films derived from native and phosphated cush-cush yam and cassava starches
Abstract

•Evaluated edible films have applications in the food industry.•Materials from phosphatized starches presented higher hydrophilic characteristics.•Materials from phosphatized starches increase the temperature of degradation.•Films made from cush-cush yam have higher crystallinity.•Edible films with higher crystallinity were associated with low moisture content.

Edible, biodegradable films based on native and phosphated cush-cush yam and cassava starches plasticized with glycerol were developed by casting. The starches were chemically modified by cross-linking with sodium trimetaphosphate (STMP). The physicochemical properties of each of the different starch films were then evaluated and compared in order to determine their potential applications in the food industry. The amylose molecules in the cassava starch strongly interacted with glycerol resulting in an increase in the number of hydrogen bonds. This led to a slight shift upwards in the temperature required for the onset of the degradation of the cassava starch-based films, and even higher temperatures for degrading the films based on the modified starches. Films made from phosphated starches were more hydrophilic, producing an increase in solubility and crystallinity. Finally, the characteristics of the cassava films developed suggest that they would make good packaging materials, while films derived from cush-cush yam are more suitable as food coatings.

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Keywords
Biodegradable edible films; Cush-cush yam; Cassava; Cross-linking
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Physico-chemical properties of edible films derived from native and phosphated cush-cush yam and cassava starches
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food Packaging and Shelf Life - Volume 3, March 2015, Pages 1–8
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