Comparative physical, antioxidant, and antimicrobial properties of films prepared by dissolving chitosan in bioactive vinegar varieties

Veselina Adımcılar, Zeynep Kalaycıoğlu, Gülşen Akın-Evingür, Emrah Torlak, F. Bedia Erim*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Solvent casting following the dissolution of chitosan in aqueous acetic acid is the most widely used method for preparing chitosan films. In this study, an economical and practical way is proposed to improve the physicochemical properties of chitosan films by using vinegar varieties both as solvents and as bioactive additives to improve the properties of the films. Chitosan films were prepared by dissolving chitosan in pomegranate, grape, apple, and hawthorn vinegar. Vinegar contains bioactive phenolics and different organic acids together with acetic acid, depending on the main raw material from which it is obtained. The films' mechanical, optical properties, antioxidant and antimicrobial activities were compared with each other and with the chitosan film prepared by dissolving chitosan in acetic acid. The antioxidant and antimicrobial properties of chitosan films prepared with vinegar increased. The use of vinegar as a solvent increased the UV light barrier properties of the films. Improved antimicrobial, antioxidant, optical, and elastic properties of films prepared by dissolving chitosan in vinegar varieties are promising in applications of these films as potential and economic food packaging materials.

Original languageEnglish
Article number124735
JournalInternational Journal of Biological Macromolecules
Volume242
DOIs
Publication statusPublished - 1 Jul 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Funding

We thank the Research Foundation of Istanbul Technical University for financial support (Grant ID: 42445 ).

FundersFunder number
Istanbul Teknik Üniversitesi42445

    Keywords

    • Apple
    • Food packaging
    • Grape
    • Hawthorn
    • Pomegranate

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