Next Article in Journal
Elevation of Serum APE1/Ref-1 in Experimental Murine Myocarditis
Next Article in Special Issue
Effect of Guar Gum with Sorbitol Coating on the Properties and Oil Absorption of French Fries
Previous Article in Journal
Could Oxidative Stress Regulate the Expression of MicroRNA-146a and MicroRNA-34a in Human Osteoarthritic Chondrocyte Cultures?
Previous Article in Special Issue
Physical, Structural, Barrier, and Antifungal Characterization of Chitosan–Zein Edible Films with Added Essential Oils
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle
Int. J. Mol. Sci. 2017, 18(12), 2658; https://doi.org/10.3390/ijms18122658

Tuning the Functional Properties of Bitter Vetch (Vicia ervilia) Protein Films Grafted with Spermidine

1
Department of Chemical Sciences, University of Naples “Federico II”, 80126 Naples, Italy
2
CeSMA, University of Naples “Federico II”, 80126 Naples, Italy
3
Department of Nutrition and Food Technology, An-Najah National University, P.O. Box 7 Nablus, Palestine
*
Author to whom correspondence should be addressed.
Received: 6 November 2017 / Revised: 1 December 2017 / Accepted: 7 December 2017 / Published: 8 December 2017
(This article belongs to the Special Issue Advanced Biomaterials for Food Edible Coatings)
Full-Text   |   PDF [984 KB, uploaded 8 December 2017]   |  

Abstract

Bitter vetch protein films containing positively charged spermidine, alone or with low amounts of glycerol, showed high tensile strength that progressively decreased by increasing the plasticizer concentration. Accordingly, lower film elongation at break and higher Young’s module values were detected in the presence of the polyamine without or with small amounts of glycerol. These data suggest that spermidine not only acts as a plasticizer itself by ionically interacting with proteins, but that it also facilitates glycerol-dependent reduction of the intermolecular forces along the protein chains, consequently improving the film flexibility and extensibility. Thus, spermidine may be considered not only as a primary, but also as a secondary plasticizer because of its ability to enhance glycerol plasticizing performance. Such double behavior of the polyamine was confirmed by the film permeability tests, since spermidine increased the barrier properties to gases and water vapor, while glycerol emphasized this effect at low concentrations but led to its marked reversal at high concentrations. Film microscopic images also substantiated these findings, showing more compact, cohesive, and homogeneous matrices in all spermidine-containing films. View Full-Text
Keywords: edible film; food coating; plasticizer; spermidine; glycerol; Vicia ervilia edible film; food coating; plasticizer; spermidine; glycerol; Vicia ervilia
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Porta, R.; Di Pierro, P.; Roviello, V.; Sabbah, M. Tuning the Functional Properties of Bitter Vetch (Vicia ervilia) Protein Films Grafted with Spermidine. Int. J. Mol. Sci. 2017, 18, 2658.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top