Evaluation of multifunctional properties of gallic acid crosslinked Poly (vinyl alcohol)/Tragacanth Gum blend films for food packaging applications.

Autor: Goudar N; P G Department of Studies in Chemistry, Karnatak University, Dharwad - 580 003, India., Vanjeri VN; P G Department of Studies in Chemistry, Karnatak University, Dharwad - 580 003, India., Dixit S; Department of Biotechnology and Microbiology, Karnatak University, Dharwad - 580 003, India., Hiremani V; P G Department of Studies in Chemistry, Karnatak University, Dharwad - 580 003, India., Sataraddi S; P G Department of Studies in Chemistry, Karnatak University, Dharwad - 580 003, India., Gasti T; P G Department of Studies in Chemistry, Karnatak University, Dharwad - 580 003, India., Vootla SK; Department of Biotechnology and Microbiology, Karnatak University, Dharwad - 580 003, India., Masti SP; Department of Chemistry, Karnatak Science College, Dharwad - 580 001, India., Chougale RB; P G Department of Studies in Chemistry, Karnatak University, Dharwad - 580 003, India. Electronic address: chougaleravindra@yahoo.com.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2020 Apr 28; Vol. 158, pp. 139-149. Date of Electronic Publication: 2020 Apr 28.
DOI: 10.1016/j.ijbiomac.2020.04.223
Abstrakt: The natural polymer Tragacanth Gum is less explored as a supporting matrix, there are very less studies conducted using this polymer in literature. So the present study aims to explore the consequences of different weight percent (wt.%) of gallic acid (GA) on physicochemical properties of Poly (vinyl alcohol)/Tragacanth Gum blend films. The incorporation of GA resulted in more strengthened but less flexible films as confirmed by tensile tests. DSC studies confirmed the miscibility of composite films in the given composition range and TGA studies revealed increased thermal stability. The morphological studies revealed a homogeneous distribution of GA at lower wt.% in the blend system. X-Ray Diffraction study depicted; the added GA lost crystalline structure after incorporating it into the blend. The Water Vapor Transmission Rate (WVTR) was improved after the incorporation of GA into the blend system. Overall migration studies revealed the limited release of GA from the matrix into food simulants. Soil degradation rate increased as the wt.% of GA increased. The composite films presented strong antioxidant activity; therefore, prepared composite films could be used as an alternative to current packaging materials.
Competing Interests: Declaration of competing interest All the authors declare no conflict of interest.
(Copyright © 2020. Published by Elsevier B.V.)
Databáze: MEDLINE
Externí odkaz: